FOR SERVICE TECHNICIAN'S USE ONLY
FOR SERVICE TECHNICIAN’S USE ONLY Tech Sheet
Do not discard
DANGER
WARNING
Electrical Shock Hazard
Electrical Shock Hazard
Disconnect power before servicing.
Only authorized technicians should perform diagnostic voltage measurements.
Replace all parts and panels before operating.
After performing voltage measurements, disconnect power before servicing.
Failure to do so can result in death or electrical shock.
Failure to follow these instructions can result in death or electrical shock.
Voltage Measurement Safety Information When performing live voltage measurements, you must do the following: ■ Verify the controls are in the off position so that the appliance does not start when energized. ■ Allow enough space to perform the voltage measurements without obstructions. ■ Keep other people a safe distance away from the appliance to prevent potential injury. ■ Always use the proper testing equipment. ■ After voltage measurements, always disconnect power before servicing.
IMPORTANT: Electrostatic Discharge (ESD) Sensitive Electronics ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new control assembly may appear to work well after repair is finished, but failure may occur at a later date due to ESD stress. ■ Use an antistatic wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the
appliance -ORTouch your finger repeatedly to a green ground connection point or unpainted metal in the appliance. ■ Before removing the part from its package, touch the antistatic bag to a green ground connection point or
unpainted metal in the appliance. ■ Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only. ■ When repackaging failed electronic control assembly in antistatic bag, observe above instructions.
W10767738B
FOR SERVICE TECHNICIAN’S USE ONLY
FOR SERVICE TECHNICIAN’S USE ONLY PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY a. Do not operate or allow the oven to be operated with the door open. b. Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: 1. Interlock Operation 2. Proper Door Closing 3. Seal and Sealing Surfaces (Arcing, Wear and Other Damage) 4. Damage to or Loosening of Hinges and Latches 5. Evidence of Dropping or Abuse c. Before turning on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, waveguide or transmission line, and cavity for proper alignment, integrity and connections. d. Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in service manual before the oven is released to the owner. e. A microwave leakage check to verify compliance with the CSA should be performed on each oven prior to release to the owner. f. Do not attempt to operate the oven if the door glass is broken.
2
FOR SERVICE TECHNICIAN’S USE ONLY Diagnostics General Procedure: Error Codes
IMPORTANT: Before powering MWO magnetron, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity. Unplug oven or disconnect power before performing the following checks: ■ A potential cause of a control not functioning is corrosion on connections. Observe connections and check for continuity with an ohmmeter. ■ All tests/checks should be made with a VOM or DVM having a sensitivity of 20,000Ω per volt DC or greater. ■ Check all connections before replacing components, looking for broken or loose wires, failed terminals, or wires not pressed into connectors far enough. Damaged harness must be entirely replaced. Do not rework a harness. ■ Resistance checks must be made with power cord unplugged from outlet, and with wiring harness or connectors disconnected. IMPORTANT: Do not replace the control if there is no evidence of any failure.
NOTE: All failures are stored in the failure history. To check if the error code is still present, start a cooking function and wait 1 minute to check if the error appears. 1. Plug in oven or connect power. 2. Enter Diagnostics Mode. 3. Touch or scroll to “Error Diagnostics” in the Diagnostics menu, and then touch “OK.”
350 35
To Enter Diagnostics Mode: Before proceeding with any corrective action, perform the following steps to enter the Diagnostics Mode. 1. Enter Diagnostics Mode by pressing LOWER OVEN>LOWER LIGHT>OVEN CANCEL (repeat two more times) TIP: You can also swipe your finger from left to right over the buttons 3 times. NOTE: You do not need to wait for any audible or visual feedback from the control between keypad presses. 2. If control does not enter Diagnostics, continue repeating the keypad sequence from Step 1. All the keypads will light up when the control enters Diagnostics. 3. From the Diagnostic Menu, scroll to the desired selection using the touch screen. Error Diagnostics: View and clear the failure history. Component Activation: Manually activate each relay. Sensors & Switches: View the traditional oven cavity temperatures and door/latch switch status. System Information: View the model number, serial number, and software versions. Wi-Fi: View Wi-Fi related content such as IP Address, Gateway, SSID, and connection status. Exit Diagnostics
4. 5.
To clear error codes, touch “Clear History.” If no failures are listed, the message “No Error” will appear on the screen.
General Procedure: Component Activation 1. 2. 3. 4.
3
Plug in oven or connect power. Enter Diagnostics Mode. Touch or scroll to “Component Activation” in the Diagnostics menu, and then touch “OK.” Touching the following selections will activate/ deactivate corresponding relay.
FOR SERVICE TECHNICIAN’S USE ONLY 4.
Touch or scroll through the Sensors & Switches menu to view the desired status. NOTE: Touching “Back” will return the display to the main Diagnostics menu.
Selection
Relay
MW Light
MW Light Relay
MW Turntable
MW Turntable Relay
General Procedure: System Information
MW Cooling Fan
MW Cooling Fan Relay
NOTE: This procedure is to view the following system information:
MW Grill
MW Broil Element Relay
MW Convection Element
MW Convection Element Relay
MW Convection Fan
MW Convection fan Relay
MW Magnetron/ Cooling Fan
MW Magnetron and MW Cooling Fan Relay
Oven Bake Element
Oven Bake Element Relay
Oven Broil Element
Oven Broil Element Relay
Convection Element - Up
Upper Convection Element Relay
Convection Element - Low
Lower Convection Element Relay
Convection Fan HS - Up
Upper High Speed Convection Fan Relay
Convection Fan LS - Up
Upper Low Speed Convection Fan Relay
Convection Fan HS - Low
Lower High Speed Convection Fan Relay
Convection Fan LS - Low
System Information
Display
Model #
Model Information
Serial #
Product Serial Number
UI Serial #
User Interface Serial Number
Oven ACU Serial #
Appliance Control Unit Serial Number
UI Version
User Interface Software Version
HMI Central SW
HMI Central Board Software Version
HMI Left SW
HMI Left Keyboard Software Version
HMI Left EE
HMI Left Keyboard EEPROM Version
HMI Right SW
HMI Right Keyboard Software Version
HMI Right EE
HMI Right Keyboard EEPROM Version
Kernel Version
HMI Central Board Software Version
Touch Calibration Version
LCD/TP FPC Tail Software Version
Lower Low Speed Convection Fan Relay
Database Version
HMI Central Board Database Structure
Oven Cooling Fan High Speed
Oven Cooling Fan High Speed Relay
Audio Version
HMI Central Board Software Version
Oven Cooling Fan Low Speed
Oven Cooling Fan Low Speed Triac
Oven ACU SW
Oven Appliance Control Unit Software Version
Oven Light
Oven Light Triac
MWO ACU SW
Microwave Oven Appliance Control Unit Software Version
Oven Door Latch Motor
Oven Door Latch Motor Relay
Diagnostics Entries
Number of times Diagnostic Menu has been entered
General Procedure: Sensors & Switches
1. 2. 3.
NOTE: This procedure is to view the current status of oven switches and sensor readings. Display
Status 4.
Plug in oven or connect power. Enter Diagnostics Mode. Touch or scroll to “System Information” in the Diagnostics menu, and then touch “OK.” Touch or scroll through the System Information menu to view the desired status. NOTE: Touching “Back” will return the display to the main Diagnostics menu.
MW Door Switch
Open or Closed
MW Cavity Temp
Degrees in Celsius
Oven Door Switch
Open or Closed
General Procedure: Model Selection
Oven Latch Switch
Open or Closed
Oven Cavity Temp
Degrees in Celsius
Oven Meat Probe Temp
Degrees in Celsius
NOTE: When a new User Interface is installed, you will be prompted to select a new model number upon power up. To change the model number on an existing UI, follow the steps below. 1. Plug in oven or connect power. 2. Enter Diagnostics Mode. 3. Touch or scroll to “System Information” in the Diagnostics menu, and then touch “OK.” 4. Touch or scroll to “Model Number,” and then touch “OK.” 5. Touch or scroll to the correct model number in the list, and then touch “Select.”
1. 2. 3.
Plug in oven or connect power. Enter Diagnostics Mode. Touch or scroll to “Sensors & Switches” in the Diagnostics menu, and then touch “OK.”
4
FOR SERVICE TECHNICIAN’S USE ONLY Failure/Error Display Codes Speaker, Control Panel Assembly
Switch Mode No Display - control is blank Power Supply (SMPS), User Interface (UI)
No Sound
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and power On). 1. Verify sound is enabled. Touch the Tools menu, and then scroll to the Sound Menu. Confirm Key Press, Timer & Alert, and Power On & Off actions are all turned on and set to the desired volume. 2. Unplug oven or disconnect power. 3. Confirm the speaker is firmly connected to the HMICentral/UI board at J8. If speaker is firmly connected, go to the Step 4. If speaker connection is loose, reconnect and proceed to Step 5.
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). 1. Unplug oven or disconnect power. 2. Remove plastic cover from UI. Check connection from display to UI. 3. Check wiring from main line to SMPS (CONN 7). HMI Left J6
User Interface
J4
N L2 L1
J5
J15
J7 HMI Right
Control Panel Assembly
1234
Speaker
OR
BK
YL CONN7 6 WH 2 SMPS 5 4 1 14 V DC 3 2 BK 1 15W CONN2
YL BU
OR YL
OR
BR OR 12345
BK WH Line BK P32 P33 20A Fuse BR Line L1 Filter 41 WH 42 WH 52 BU WH P31 P34 Cavity Thermostat
4. 5. 6. 7. 8.
9. 10. 11. 12. 13. 14. 15. 16.
4 3 2 1
P1
1 2
J8
RD
P1
Oven Appliance Manager
4. 5. 6. 7.
1 2 3 4 5 P26
Microwave Appliance Manager
Check the wiring harness connection at UI (J15). Check proper voltage input at J15-2 (GND) to J15-4 (14 VDC) on the UI by completing the following steps: Connect voltage measurement equipment to J15-2 and J15-4 on UI. Plug in oven or reconnect power. Measure voltage and confirm voltage reading is 14 VDC. If voltage is correct, unplug oven or disconnect power and go to Step 13. If voltage is not correct, go to Step 9. Unplug oven or disconnect power. Replace the SMPS. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Check for control board display. If still no display, unplug oven or disconnect power. Replace HMI-Central/UI board. Reassemble all parts and panels before operating. Plug in oven or reconnect power. If the UI was replaced, follow the on-screen prompts to select the model number. Verify operation is normal. If problem persists, replace the Control Panel Assembly and repeat steps 14 through 16.
User Interface not reacting to touch
2 J8 1
HMI-C User Interface
Replace speaker. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Confirm operation of the speaker. If problem persists, unplug oven or disconnect power, replace Control Panel Assembly, and repeat steps 5 through 7.
FAILURE
ERROR
LIKELY FAILURE CONDITION
F1 Internal
E0
Oven User Interface (UI) Failure
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” NOTE: If other error codes are stored, troubleshoot those other error codes first. 1. Unplug oven or disconnect power. 2. Confirm the control panel assembly is grounded to the oven chassis. If it is, go to Step 6. If it is not, fix the connection. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power and cycle power. 5. If error persists, unplug oven or disconnect power. 6. Replace HMI-Central/UI board. 7. Reassemble all parts and panels before operating. 8. Plug in oven or reconnect power and cycle power. 9. If error persists after HMI-Central/UI board is replaced, unplug oven or disconnect power and replace Control Panel Assembly. 10. Reassemble all parts and panels before operating. 11. Plug in oven or reconnect power. Follow the onscreen prompts for model selection. 12. Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history. If the Control Panel Assembly was replaced, there is no need to clear the error history.
Control Panel Assembly
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and power On). 1. Enter the Diagnostic Menu, and then touch POWER. 2. To reset Touch Calibration: unplug oven or disconnect power, wait 10 seconds, and then plug in oven or reconnect power. If still no response, go to Step 3. 3. Unplug oven or disconnect power. 4. Replace Control Panel Assembly. 5. Reassemble all parts and panels before operating. 6. Plug in oven or reconnect power. 7. Verify operation is normal.
5
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
F1
E1
Internal Oven ACU Error
FAILURE
ERROR
LIKELY FAILURE CONDITION
F1
E5
Microwave Oven Inverter Error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” NOTE: If other error codes are stored, troubleshoot those other error codes first. 1. Unplug oven or disconnect power. 2. Replace Copernicus Appliance Manager. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. If error persists after Copernicus Appliance Manager is replaced, unplug oven or disconnect power, and then go to Step 6. If not, go to Step 10. 6. Replace Control Panel Assembly. 7. Reassemble all parts and panels before operating. 8. Plug in oven or reconnect power. 9. Follow the on-screen prompts to select the model number 10. Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history. If the Control Panel Assembly was replaced, there is no need to clear the error history.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Make sure that all interlock switches works properly: when door is open, microwave light is on; when door is closed, microwave light is off. 2. Unplug oven or disconnect power. 3. Check the following connections on Microwave Appliance Manager: a. Relay 4903. b. Connector P8.
E4
To MW Relay 4903 P355
P354
BU WH
MW Inverter PWM
CN702
RD
CN703 E701 RD YL/ GN
Microwave Oven Relay 4903 Error 4.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Make sure that all interlock switches works properly: when door is open, microwave light is On; when door is closed, microwave light is Off. 2. Unplug oven or disconnect power. 3. Check the following on the Microwave Appliance Manager: a. Wire connections to Relay 4903. Line Fuse 20A
CN701
Magnetron
SUGGESTED CORRECTIVE ACTION PROCEDURE
L1
321
F1
P8
123
SUGGESTED CORRECTIVE ACTION PROCEDURE
BR 1 Primary 4 Interlock Switch
Microwave Relay 4903
BU
5. 6. 7. 8.
Inverter
9. 10. 11. 12. 13.
CN702
b.
Check if Relay 4903 is shorted. If so then go to Step 7. 4. Reassemble all parts and panels before operating. 5. Plug in oven or reconnect power. 6. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, go to Step 7. If not, go to Step 10. 7. Unplug oven or disconnect power and replace the Microwave Appliance Manager. 8. Reassemble all parts and panels before operating. 9. Plug in oven or reconnect power. 10. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
14. 15. 16. 17.
6
Check the following connections on the Inverter board: a. CN701. b. CN702. c. CN703. If the door works properly and all connections are okay, replace the Microwave Inverter Board. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 9. If not, go to Step 17. Unplug oven or disconnect power. Replace the Magnetron. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 14. If not, go to Step 17. Unplug oven or disconnect power and replace the Microwave ACU. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
ERROR
LIKELY FAILURE CONDITION
F1
E6
Microwave Generation Error
F2 Keypad
E0
Keypad disconnected
E1
Stuck/shorted key
SUGGESTED CORRECTIVE ACTION PROCEDURE
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Make sure that all interlock switches works properly: when door is open, microwave light is on; when door is closed, microwave light is off. 2. Unplug oven or disconnect power. 3. Check the following connections on Microwave Appliance Manager: a. Relay 4903.
L1
4. 5. 6. 7.
8. 9. 10. 11.
12. 13. 14. 15. 16.
Speaker
HMI Left
BR 1 Primary 4 Interlock Switch
Microwave Relay 4903
BU
BK RD
J6
21
Line Fuse 20A
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Check that connectors J4, J5, J6, and J7 are firmly connected. If they are not, go to Step 3. If they are, go to Step 6. J8
J4
Inverter
User Interface J15 1234
J5
J7
HMI Right
Control Panel Assembly
CN702
3. 4. 5.
If the door works properly and all connections are okay, replace the Magnetron. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 8. If not, go to Step 16. Unplug oven or disconnect power and replace the Inverter Board. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 12. If not, go to Step 16. Unplug oven or disconnect power. Replace the Microwave ACU. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
6. 7. 8. 9.
Reconnect any loose connectors. Reassemble all parts and panels before operating. Plug in oven or reconnect power. If the failure is gone, go to Step 9. If the failure is still present, unplug oven or disconnect power. Replace the Control Panel Assembly. Reassemble all parts and panels before operating. Follow the on-screen prompts to select the model number Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history. If the Control Panel Assembly was replaced, there is no need to clear the error history.
F3 Sensors
E0
Main oven sensor open or shorted
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Disconnect connector P3 from Oven Appliance Manager, and measure the resistance of the sensor between P3-1 and P3-2. Test for 1000Ω to 1200Ω at 77°F (25°C). Check sensor for short to ground. If checks on sensor are not correct, replace sensor and repeat the checks. V Oven Temperature Sensor
3. 4.
5. 6.
7
V
1 2 3 4 5 6 7 8 9 10 P3
Copernicus Appliance Manager
Reassemble all parts and panels and plug in oven or reconnect power. Enter the Diagnostics Menu and select “Sensors & Switches” to verify if the temperature shown in the Cavity Temp display is correct (ambient temperature). If it is, go to Step 8. If it is not, unplug oven or disconnect power. NOTE: On the status screen, the unit of measurement is Celsius. Replace the Copernicus Appliance Manager board. Reassemble all parts and panels before operating.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE 7. 8.
ERROR
LIKELY FAILURE CONDITION
Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
F3 Sensors
ERROR
LIKELY FAILURE CONDITION
F4
E1
Microwave Cavity Temperature Sensor Error
SUGGESTED CORRECTIVE ACTION PROCEDURE
Meat Probe Connector Jack or Meat Probe Shorted
E3
FAILURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function that uses the temperature sensor, such as a Convect cycle. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check that the P22 connection of the Microwave Appliance Manager is firmly connected. If it is, go to Step 3. If it is not, reconnect and go to Step 5.
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Remove meat probe if connected. 3. Disconnect connector P3 from Copernicus Appliance Manager.
Microwave Appliance Manager
Cavity Thermistor OR Meat Probe Sensor GN
1 2 3 4 5 6 7 8 9 10
P22
Copernicus Appliance Manager
3. P3
4.
5.
6. 7. 8.
Check connector jack resistance between P3-3 and P3-4. If it is 0Ω, change the jack assembly, and then go to Step 5. If it is not 0Ω, the jack assembly is working properly. Go to Step 5. Plug in the meat probe and check for short to ground or open. If checks on meat probe are not correct, replace the meat probe. At 77°F (25°C) the expected value is approximately 50KΩ. If they are correct, replace the Copernicus Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history. Check the meat probe reading by entering the Diagnostics Menu and selecting “Sensors & Switches.” The meat probe should detect the ambient temperature.
4.
5. 6. 7.
F4
Disconnect connector P22 from the Microwave Appliance Manager, and measure the resistance of the thermistor. It should be (approximately) 230kΩ at 77°F ± 10°F (25°C ± 10°C). Check thermistor for short to ground. If check on thermistor is not correct, replace the thermistor. If thermistor check is correct, replace the Microwave Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history. E2
Magnetron Temperature Sensor Error
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check that the P21 connection of the Microwave Appliance Manager is firmly connected. If it is, go to Step 3. If it is not, reconnect and go to Step 5.
Magnetron Thermistor
3.
4.
5. 6. 7.
8
Microwave Appliance Manager
P21
Disconnect connector P21 from the Microwave Appliance Manager. Measure the resistance of the thermistor. It should be (approximately) 10kΩ at 77°F ± 10°F (25°C ± 10°C). Check thermistor for short to ground. If check on thermistor is not correct, replace the thermistor. If thermistor check is correct, replace the Microwave Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
F4 Inputs
E4
Microwave Oven Humidity Sensor Error
4.
5. 6. 7.
LIKELY FAILURE CONDITION
F4
E8
Inverter Over Temperature
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check the following: a. Cooling fan connection for any loose connectors. b. Oven installation and make sure there is no air blockage at the bottom vent. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. To check if the cooling fan is stalled, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Make sure the fan is running. If it is not, unplug oven or disconnect power, replace the fan and go to Step 8. If it is, go to Step 6. 6. Unplug oven or disconnect power. 7. Replace the inverter board. 8. Reassemble all parts and panels before operating. 9. Plug in oven or reconnect power. 10. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function that uses the humidity sensor, such as a Steam cycle. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check that the P23 connection of the Microwave Appliance Manager is firmly connected. If it is, go to Step 3. If it is not, reconnect and go to Step 5.
3.
ERROR
SUGGESTED CORRECTIVE ACTION PROCEDURE
SUGGESTED CORRECTIVE ACTION PROCEDURE
Humidity Sensor 1600
FAILURE
Microwave Appliance Manager P23
Disconnect connector P23 from Microwave Appliance Manager and measure the resistance of the sensor: Between pins 3 and 1. It should be approximately 2800Ω at 77°F ± 10°F (25°C ± 10°C). Between pins 3 and 2. It should be approximately 2800Ω at 77°F ± 10°F (25°C ± 10°C). Check sensor for short to ground. If checks on sensor are not correct, replace the sensor. If sensor checks are correct, replace the Microwave Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
9
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
ERROR
LIKELY FAILURE CONDITION
F4
E9
Inverter and Magnetron Over Temperature
F5 Inputs
E0
Door and latch switch do not agree
SUGGESTED CORRECTIVE ACTION PROCEDURE
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check the following: a. Cooling fan connection for any loose connectors. b. Oven Installation and make sure there is no air blockage at the bottom vent. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. To check if the cooling fan is stalled, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Make sure the fan is running. If it is not, unplug oven or disconnect power, replace the fan and go to Step 8. If it is, go to Step 6. 6. Unplug oven or disconnect power. 7. Replace the Magnetron and the inverter board. 8. Reassemble all parts and panels before operating. 9. Plug in oven or reconnect power. 10. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Enter the Diagnostics Menu and select “Component Activation.” Touch or scroll to “Door Latch Motor,” and then touch “OK.” Touch “Latch Door.” Wait at least 15 seconds, and then check if latch status changes on screen. If status does not change, unplug oven or disconnect power and go to Step 2. If status changes, unplug oven or disconnect power and go to Step 5. 2. If the oven door did not unlatch, unplug connector P3 and check for continuity (on the latch wire) between P3-5 and P3-7.
TN
BU
1 2 3 4 5 6 7 Copernicus 8 9 10 Appliance Manager P3
Motor Latch Switch BR
OR/BK Door Switch
3. 4.
Disconnect J8 connector from Copernicus Appliance Manager. Measure the resistance between connectors J8-2 and P5-1. It should be 500Ω to 3000Ω at 77°F (25°C). N
1 2 3 4 5 6 7
Copernicus Appliance Manager
WH
YL Motor Door Latch
P5 1 2 J8
5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
10
WH
If the resistance check is outside the range, replace the affected door latch assembly. Verify that the error is gone. Reassemble all parts and panels. Plug in oven or reconnect power. Enter the Diagnostics Menu and select “Component Activation.” Check the door status on the screen by opening and closing the oven door. If status does not change, unplug the oven or disconnect power. Check for continuity with door open and closed at P3-5 to P3-6. Door open = infinite resistance. Door closed = zero resistance. If continuity check is not correct, replace the door latch assembly. If all checks were correct, replace Copernicus Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
F5 Inputs
E1
Latch not operating
FAILURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Enter the Diagnostics Menu and select “Component Activation.” Touch or scroll to “Door Latch Motor,” and then touch “OK.” Touch “Latch Door.” Wait at least 15 seconds, and then check if latch status changes on screen. If status does not change, go to Step 2. If status changes, unplug oven or disconnect power, replace Copernicus Appliance Manager and go to Step 6. 2. If latch status on screen is “open,” unplug oven or disconnect power and check for loose harness connection between motor latch switch and P3-5 and P3-7.
TN
LIKELY FAILURE CONDITION
E0
Oven user interface lost communication
E6
Oven appliance manager lost communication
F6
SUGGESTED CORRECTIVE ACTION PROCEDURE
BU
ERROR
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Check continuity of wirings between P1-4 and J15-3, then P1-5 and J15-2. 3. Check for continuity between P1-1 and P1-2. 4. If all checks are correct, replace Copernicus Appliance Manager.
HMI Left
User Interface
J4
J6
J15
1 2 3 4 5 6 7 8 Copernicus 9 10 Appliance Manager P3
J5
J7
HMI Right
Control Panel Assembly
1234
OR
N L2 L1
YL WH BK
Motor Latch Switch
2 1
CONN7 CONN26
SMPS 14V DC 15 W
5 4 3 2 1
YL BU
BR OR
P1
12345
Oven Appliance Manager
BR
5. 6. 7.
Reassemble all parts and panels. Plug in oven or reconnect power. If the error appears again, unplug oven or disconnect power. 8. Replace HMI-Central/UI board. 9. Reassemble all parts and panels before operating. 10. Plug in oven or reconnect power. 11. Follow the on-screen prompts to select the model number if the UI was replaced. 12. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
OR/BK Door Switch
3. 4.
Disconnect connector J8 from Copernicus Appliance Manager. Measure the resistance between connectors J8-2 and P5-1. It should be 500Ω to 3000Ω at 77°F (25°C). N
1 2 3 4 5 6 7
Copernicus Appliance Manager
WH
YL Motor Door Latch
P5 1 2 J8
5.
6. 7. 8.
WH
If the resistance check is outside the range, replace the door latch assembly. Verify that the error is gone. If all checks were correct, replace Copernicus Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
11
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
F6
E1
Over temperature
8.
SUGGESTED CORRECTIVE ACTION PROCEDURE
ERROR
LIKELY FAILURE CONDITION
Check sensor for short to ground. If checks on sensor are not correct, replace sensor and repeat the checks. V Oven Temperature Sensor
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Check for elements shorted to ground. Check resistance of elements: a. PX4-2 and PX3-2 to check Broil element (13.2Ω to 14.6Ω). b. PX1-1 and PX3-2 to check Bake element (19Ω to 21Ω). c. PX1-3 and PX3-2 to check Upper Conv element (15.2Ω to 17.3Ω). d. PX2-4 and PX3-2 to check Lower Conv element (15.2Ω to 17.3Ω). 3. If any element is shorted to ground, replace the element. 4. Check for shorted relays. Disconnect PX1, PX2 and PX4 connectors and check for shorts between: a. PX1-1 and PX1-2 (Bake relay). b. PX1-3 and PX1-4 (Up Convect relay). c. PX4-1 and PX4-2 (Broil relay). d. PX2-3 and PX2-4 (Low Convect relay).
K11
F6
PX4 RD K10 K2
PX1 K3
BU
Bake - 2800W
RD
YL
Upper Convect - 3400W
YL RD
1 2
BK 12 12
RD
PX3 RD/WH K1
5. 6. 7.
1 2 3 4
PX2 YL Lower Convect - 3400W YL
E4
User Interface/Appliance Manager state status mismatch
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Replace Copernicus Appliance Manager. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. Cycle power. If error persists after the Copernicus Appliance Manager is replaced, unplug oven or disconnect power. Go to Step 7. 6. If the error is gone, go to Step 10. 7. Replace the HMI-Central/UI board. 8. Reassemble parts and panels before operating. 9. Plug in oven or reconnect power, and follow the onscreen prompts for model selection. 10. Verify operation is normal. If operation is normal, go to Step 14. If error still exists, go to Step 11. 11. Unplug oven or disconnect power. 12. Replace the control panel assembly. 13. Plug in oven or reconnect power. 14. Follow the on-screen prompts for model selection. 15. Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history.
BK
1 2 3 4
Copernicus Appliance Manager
SUGGESTED CORRECTIVE ACTION PROCEDURE
BK BU Broil - 4000W
1 2
1 2 3 4 5 6 7 8 9 10 P3
9. Reassemble all parts and panels before operating. 10. Plug in oven or reconnect power. 11. Enter the Diagnostic Menu and select “Sensors & Switches” to verify that the corresponding oven temperature displayed is correct (ambient temperature). If not, unplug oven or disconnect power, and replace the Copernicus Appliance Manager board. NOTE: On the status screen, the unit of measurement is Celsius. 12. Reassemble all parts and panels before operating. 13. Plug in oven or reconnect power. 14. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
N L2 L1 Copernicus Appliance Manager
V
Temperature Limiter Open Temp 302°F (150°C)
BK
If there is a shorted relay, replace the Copernicus Appliance Manager. Go to Step 9. If everything is correct, disconnect connector P3 from Copernicus Appliance Manager. Measure the resistance of the oven sensor. It should be 1000Ω to 1200Ω at 77°F (25°C).
12
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
ERROR
LIKELY FAILURE CONDITION
E0
Product not wired correctly
E8
Lost communications with Microwave Oven Appliance Manager
F9
F6
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Access the electrical wiring from the house power supply to the oven. 3. Check house wiring to the product. Check to see if the neutral connection is switched with L1 or L2 (refer to the Installation Instructions for product wiring). 4. Reassemble all parts and panels before operating. 5. Plug in oven or reconnect power. 6. Verify operation is normal by running a cooking function. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Make sure the oven is plugged in. Open microwave door to check if light comes on. 2. Ensure the Sabbath mode is disabled. 3. Unplug oven or disconnect power. 4. Check the connection between User Interface J15-2 (yellow) and J15-3 (orange) and Microwave Appliance Manager P26-3 (orange) and P26-4 (yellow). User Interface Wide/Power Nav YL
OR
1 2 3 4
J15 OR
YL
1 2 3 4 5
P26 Microwave Appliance Manager
5.
If harness is correct, replace the Microwave Appliance Manager. 6. Reassemble all parts and panels before operating. 7. Plug in oven or reconnect power. 8. If the error appears again, unplug or disconnect power and replace HMI-Central/UI board. 9. Reassemble all parts and panels before operating. 10. Plug in oven or reconnect power. 11. Follow the on-screen prompts to select the model number if the UI was replaced. 12. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
13
FOR SERVICE TECHNICIAN’S USE ONLY Microwave Oven Components Component Locations Upper Microwave Oven
R
T S
Q P
VU
O N M A
D
B C E
L F
G H
I J K
14
A. Convect motor B. Convect thermostat (behind cover) C. Convect element D. Line filter E. Humidity sensor F. Magnetron fan motor G. Copernicus appliance manager (lower oven) H. Switch mode power supply (SMPS) I. Secondary interlock switch J. Turntable motor K. Broil element L. Microwave appliance manager M. Cavity halogen lamp N. Primary interlock switch O. Monitor interlock switch P. Magnetron thermistor Q. Magnetron R. Microwave light transformer S. Microwave inverter T. Cavity temperature sensor U. Grill thermostat V. Cavity thermostat Not shown: Monitor fuse, 20A line fuse
FOR SERVICE TECHNICIAN’S USE ONLY Lower Oven
A. HMI-Central/UI board B. Cooling fan C. Oven temperature sensor D. Convection assembly
E. Temperature limiter F. Light assembly G. Bake element (hidden) H. Broil element
15
I. Door lock assembly J. Control panel assembly K. WiFi antenna
FOR SERVICE TECHNICIAN’S USE ONLY Cooling Fan Relay Logic Oven High Speed Blower (Main/Upper or Lower)
Oven Low Speed Blower (Main/Upper or Lower)
Oven Cooking - Cold
-
O
Oven Cooking - Warm
-
O
Oven Cooking - Hot
O
-
Oven Self-Clean
O
-
LEGEND Cold
Cavity Temperature is less than 212°F (100°C)
Warm
Cavity Temperature is between 212°F and 599°F (100°C and 315°C)
Hot
Cavity Temperature is greater than 599°F (315°C)
Mode
Bake
Broil
Upper Lower Upper Lower Convect Convect Convect Convect Ring Ring Fan Fan
Convect Frozen Pizza
C
C
C
C
O
O
Convect Pastry
C
C
C
C
C
C
Convect Slow Roast 12 hrs
C
C
C
C
O
O
Convect Slow Roast 8 hrs
C
C
C
C
O
O
Convect Slow Roast 4 hrs
C
C
C
C
O
O
Convect Roast
C
C
C
C
O
O
Convect Broil
-
C
-
-
C
C
Convect Bake
C
C
C
C
C
C
Convect Bake- Rapid Preheat C
C
C
C
C
C
Bake
C
C
C
C
C
C
Broil
-
C
-
-
-
-
Keep Warm
C
C
-
-
C
C
Rapid Proof
C
C
-
-
-
-
Proof
C
C
-
-
-
-
No Preheat
C
C
C
C
C
C
True Convect
C
C
C
C
C
C
Self Clean
C
C
-
-
-
-
LEGEND Relay Off
Relay Cycles
Relay On
Not Available
-
C
O
NA
16
FOR SERVICE TECHNICIAN’S USE ONLY Component Testing Chart - Oven To properly check for voltage, complete the following steps: 1. Unplug oven or disconnect power. 2. Connect voltage measurement equipment to check points.
3. 4.
Plug in oven or reconnect power and confirm voltage reading. Unplug oven or disconnect power.
Component
Serviceable Side
Check Points Copernicus
Results-Resistance Results-Voltage
Lights
Front
P7-1 to L1 (J8-1)
0-40Ω
120V
Latch Switch
Front
P3-7 to P3-5
Open circuit
Door Switch
Front
P3-6 to P3-5
Closed circuit with oven door closed
Latch Motor
Front
P5-1 to N (J8-2)
500 to 3000Ω
Oven Temperature Sensor
Front
P3-1 to P3-2
1075Ω at 68°F (20°C)DLB
Meat Probe
Side
P3-3 to P3-4
9876-10075Ω
Blower Motor High Speed
Rear
PX2-2 to L1 (J8-1)
15Ω to 23Ω
120V motor running
Blower Motor Low Speed
Rear
P7-2 to L1 (J8-1)
15Ω to 23Ω
120V motor running
Thermal Limiter
Rear
PX3-1 to L2 (Main line)
Closed circuit
0V closed, N/A open
Thermal Fuse (only for single/double)
Front
J8-1 to L1
Closed circuit
0V closed, N/A open
Upper Convection Fan - High Speed
Rear
P5-3 to N (J8-2)
15 to 22Ω
120VAC motor running
Upper Convection Fan - Low Speed
Rear
P5-2 to N (J8-2)
17 to 25Ω
120VAC motor running
Lower Convection Fan - High Speed
Rear
P5-5 to N (J8-2)
15 to 22Ω
120VAC motor running
Lower Convection Fan - Low Speed
Rear
P5-4 to N (J8-2)
17 to 25Ω
120VAC motor running
Upper Convection Element
Front
PX1-3 to PX3-2
15.2 to 17.3Ω
240 VAC Convection cycle operating
Lower Convection Element
Front
PX2-4 to PX3-2
15.2 to 17.3Ω
240 VAC Convection cycle operating
Bake Element
Rear
PX1-1 to PX3-2
19.0 to 21.6Ω
240V Bake cycle operating
Broil Element
Front
PX4-2 to PX3-2
13.5 to 14.92Ω
240V Broil cycle operating
User Interface Board
Front
J15-2 to J15-4
N/A
14 VDC
Copernicus Appliance Manager
Side (Combo)
P1-2 to P1-5
N/A
14 VDC
17
120V motor running
FOR SERVICE TECHNICIAN’S USE ONLY NOTES: ■ Disconnect the harness from the board before performing measurements. ■ See the following table for connector pin identification. Copernicus Appliance Manager PX3 Pin 1
Pin 1
P6
P7
Pin 1
PX4
K11
PX2-1 PX2-2
PX1-4
P4
K3
Pin 1
K9 K9A
PX2-3 PX2-4 PX1-4 PX1-3
Pin 1
P3
K2 K2A K10 K4 K5 K6 K7 K8
J8
PX1-2 PX1-1 Pin 1
K10A
P5
Pin 1
K1 K1A
P1
Pin 1
Pin 1
18
Harness Connector Pin
Copernicus Appliance Manager Pin
PX1-1
J12
PX1-2
J16
PX1-3
J13
PX1-4
J17
PX2-1
J19
PX2-2
J15
PX2-3
J18
PX2-4
J14
FOR SERVICE TECHNICIAN’S USE ONLY Component Testing Chart - Microwave Component Serviceable Procedure Side
Results Resistance
Appliance Manager
Top
Check wiring to MW microwave appliance manager: 1. Unplug the microwave oven or disconnect power. 2. Visually inspect connectors on the microwave appliance manager, P1, P2, P8, P21, P22, P23, P26, P354, P355 and the top connectors (relays 4903, 4904 and 4905) to see whether there are signs of overheating or any signs of failure due to loose wires, bad crimping, etc. 3. Reassemble all parts and panels before operating. 4. Plug in microwave oven or reconnect power.
Cavity Thermostat
Top
1. 2. 3. 4. 5.
Magnetron Fan Motor
Top
Turntable Motor
Bottom
Monitor Fuse
Top
1. 2. 3. 4. 5.
MW Light Transformer
Top
1. 2. 3. 4. 5.
Line Fuse
Top
1. 2. 3. 4. 5.
6. 1. 2. 3. 4. 5. 6. 1. 2. 3. 4. 5. 6.
6.
6.
6.
Component Location G
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
V
Unplug microwave oven or disconnect power. Normal = 15Ω Abnormal = Infinite Remove wire leads. Measure resistance (ohmmeter scale: Rx1). Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
F
Unplug microwave oven or disconnect power. Normal =2500Ω (approximately) Remove wire leads. Abnormal = Infinite Measure resistance (ohmmeter scale: Rx1). Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
J
Unplug microwave oven or disconnect power. Normal = Continuity Remove wire leads. Abnormal = Infinite Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Not shown
Unplug microwave oven or disconnect power. Remove wire leads. Measure resistance (ohmmeter scale: Rx1). Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Primary Winding = 40Ω (approximately) Secondary Winding = 0.4Ω (approximately)
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
19
R
Not shown
FOR SERVICE TECHNICIAN’S USE ONLY Component Serviceable Procedure Side Primary Interlock Switch
Top
Results Resistance
Test 1: Test 1: 1. Unplug microwave oven or disconnect power. Door Open = Infinite. 2. Disconnect the wires at the Primary Interlock Door Closed = Continuity. Switch. 3. Check from the common terminal (brown wire) to the normally open terminal (yellow wire). 4. Reconnect the wires at the Primary Interlock Switch. 5. Reassemble all parts and panels before operating. 6. Plug in microwave oven or reconnect power.
Component Location N
Test 2: Test 2: 1. Unplug microwave oven or disconnect power. Door Open = Continuity. 2. Disconnect the wires at the Primary Interlock Door Closed = Infinite Switch. 3. Check from the common terminal (brown wire) to the normally closed terminal (blue wire). 4. Reconnect the wires at the Primary Interlock Switch. 5. Reassemble all parts and panels before operating. 6. Plug in microwave oven or reconnect power. Secondary Interlock Switch
Top
1. 2. 3. 4. 5. 6.
Monitor Interlock Switch
Top
1. 2. 3. 4. 5. 6.
Halogen Light
Top
1. 2. 3. 4. 5. 6.
Unplug microwave oven or disconnect power. Door Open = Continuity. Door Closed = Infinite Disconnect the wires at the Secondary Interlock Switch. Check from the common terminal (blue wire) to the normally open terminal (white wire). Reconnect the wires at the Secondary Interlock Switch. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
I
Unplug microwave oven or disconnect power. Door Open = Continuity. Disconnect the wires at the Monitor Interlock Door Closed = Infinite Switch. Check from the common terminal (yellow wire) to the normally closed terminal (blue wire). Reconnect the wires at the Monitor Interlock Switch. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
O
Unplug microwave oven or disconnect power. Normal = approximately 3Ω Remove wire leads. Abnormal = Infinite Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
M
20
FOR SERVICE TECHNICIAN’S USE ONLY Component Serviceable Procedure Side
Results Resistance
Inverter
Top
Check wiring to MW inverter: 1. Unplug the microwave oven or disconnect power. 2. Visually inspect 4 connectors on the MW inverter boards, CN701, CN702, CN703 and E701 to see whether there are signs of overheating or any signs of failure due to loose wires, bad crimping, etc. 3. Reassemble all parts and panels before operating. 4. Plug in microwave oven or reconnect power.
Magnetron
Top
1. 2. 3. 4. 5. 6.
Line Filter
Top
Humidity Sensor
Top
1. 2. 3. 4. 5. 6. 1. 2. 3. 4. 5. 6.
Magnetron Thermistor
1. 2. 3. 4. 5. 6.
Grill Thermostat
Top
Convect Thermostat
Rear
1. 2. 3. 4. 5. 6. 1. 2. 3. 4. 5. 6.
Component Location S
Unplug microwave oven or disconnect power. Remove wire leads. Check that the seal is in good condition. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Filament Terminals Normal = /= 300kΩ Abnormal /= 100kΩ
D
Unplug microwave oven or disconnect power. Remove the 3-pin connector from MW Appliance Manager. Measure resistance across pins 1 and 3 and across pins 2 and 3. Replace the 3-pin connector from MW Appliance Manager. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Normal = 2.8kΩ (approximately) at 77°F +/- 10°F (25°C +/- 10°C) Abnormal = Infinite.
E
Unplug microwave oven or disconnect power. Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Normal = 10kΩ (approximately) at 77°F +/- 10°F (25°C +/-10°C) Abnormal = Infinite.
P
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
U
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
B
21
FOR SERVICE TECHNICIAN’S USE ONLY Component Serviceable Procedure Side Broil Element
Rear
1. 2. 3. 4. 5. 6.
Convect Element
Rear
1. 2. 3. 4. 5. 6.
Cavity Temp Rear Sensor
1. 2. 3. 4. 5. 6.
Convect Fan Rear Motor
1. 2. 3. 4. 5. 6.
Results Resistance
Component Location
Unplug microwave oven or disconnect power. Normal = 9Ω Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
K
Unplug microwave oven or disconnect power. Normal = 12Ω Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
C
Unplug microwave oven or disconnect power. Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Normal = 230KΩ (approximately) at 77°F ±10°F (25°C ±10°C) Abnormal = Infinite
Unplug microwave oven or disconnect power. Normal = 48Ω Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
22
T
A
FOR SERVICE TECHNICIAN’S USE ONLY Wiring Diagrams NOTES: ■ End of line tester (EOL) is for manufacturing purposes only. ■ Dots indicate connections or splices.
HMI-C User Interface
J4
J6
Antenna
J8
RD HMI Left
■
Circuit shown in STANDBY/OFF mode with oven door closed. All voltages in the wiring diagrams are designated as 120/240 VAC. If oven is connected to 120/208 VAC, replace 240V with 208V.
Control Panel Assembly
21
Speaker BK
■
J5
J7
HMI Right N L2 L1
WIFI CORE
N L2 L1
J15
J1
1234
EOL
12
OR
RD/WH
GN
YL CONN7 CONN2 SMPS 14V DC 15W
654321
BK
21
WH
OR
YL
BR OR 12345
BU
J8
K11
K2
YL
V Oven Temperature Sensor
OR GN
BU
TN
K3
K1
71 BR
51 BU
Humidity Sensor 1600
K4 K5 K6 K7 K8
P26
Fuse 250mA
Control Inverter
Grill Relay 4904
17 WH
P1 MW Relay 4903 P21
CN701 MW Inverter PWM CN703 E701 63 WH CN702 90 RD 91 RD 19 YL/ GN Magnetron
9 BU
P355
P22 P23
P8
P354 Microwave Appliance Manager 1
Conv. 1200W 18 BU
BK
Low Convect - 3400W
BK Oven Lights
P7
GY
LS Cooling Fan WH WH
YL
P5
Motor Door Latch RD OR/WH LS Convect Fan - Upper HS Convect Fan - Upper
Convection Thermostat Opens at 293°F (145°C) Closes at 221°F (105°C)
Enclosed Thermistor
Plug With Female Connector
Latch Switch
Receptacle With Male Connector
44 BU 3 BK
2 Secondary Interlock Switch 4 61 WH
AC Drive Motor
Light(s)
Door Switch Relay Contact
Heating Element
Thermal Fuse Temperature Limiter Thermoactuator Microwave Light (NonMagnetron Transformer Resettable)
23
WH
WH LS Convect Fan - Lower HS Convect Fan - Lower
LEGEND
Ground (Chassis)
BK
YL
RD
GY GY/BK Broil 1600W
WH
HS Cooling Fan
2 BK
Conv. Relay 4905
321
42 WH Grill r The mostat
P2
123
80 89 BK BK Primary Interlock Conv. Fan 20A Switch 2 Line Fuse 1 22 BR 31 4 8 BU YL 2 1 21 BR 32 YL Magnetron Monitor Interlock 4 Thermistor 43 BU Cavity Switch Cavity 52 BU Thermostat Thermistor
1234
12 BU
41 WH
RD 86 BR MW Light Transformer Conv. Thermoactuator
RD
YL
1234567
P33 Line Filter L1 P31 P34
TR2 12 345
123456 7 8
WH
72 BR
P32
TR1
1234
BK
Turntable 84 BK 83 BK 4901 Magnetron Fan Halogen Light RD 85 BR 4902
BK
Temperature Limiter Open Temp 302°F (150°C)
PX2 YL
Door Switch OR/BK
4906
BK
PX1 RD
1 23 4
81 BR
RD
YL Up Convect - 3400W YL
RD/WH K9
BR 82 BR
RD
PX3
P3
Motor Latch Switch
Bake - 2800W
12
14 RD
V
123456 7 8 910
Meat Probe Sensor
PX4 1234
K10 OR
BK BU Broil - 4000W BU
12
Copernicus Appliance Manager
12
BK WH
P1
Fuse
BK
FOR SERVICE TECHNICIAN’S USE ONLY
For patent information, please see Pat. www.patent-listing.com
W10767738B © 2015. All rights reserved.
W10767738B NOTE: This sheet contains important Technical Service Data. FOR SERVICE TECHNICIAN ONLY DO NOT REMOVE OR DESTROY 6/15
FOR SERVICE TECHNICIAN’S USE ONLY
Do not discard
DANGER
WARNING
Electrical Shock Hazard
Electrical Shock Hazard
Disconnect power before servicing.
Only authorized technicians should perform diagnostic voltage measurements.
Replace all parts and panels before operating.
After performing voltage measurements, disconnect power before servicing.
Failure to do so can result in death or electrical shock.
Failure to follow these instructions can result in death or electrical shock.
Voltage Measurement Safety Information When performing live voltage measurements, you must do the following: ■ Verify the controls are in the off position so that the appliance does not start when energized. ■ Allow enough space to perform the voltage measurements without obstructions. ■ Keep other people a safe distance away from the appliance to prevent potential injury. ■ Always use the proper testing equipment. ■ After voltage measurements, always disconnect power before servicing.
IMPORTANT: Electrostatic Discharge (ESD) Sensitive Electronics ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new control assembly may appear to work well after repair is finished, but failure may occur at a later date due to ESD stress. ■ Use an antistatic wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the
appliance -ORTouch your finger repeatedly to a green ground connection point or unpainted metal in the appliance. ■ Before removing the part from its package, touch the antistatic bag to a green ground connection point or
unpainted metal in the appliance. ■ Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only. ■ When repackaging failed electronic control assembly in antistatic bag, observe above instructions.
W10767738B
FOR SERVICE TECHNICIAN’S USE ONLY
FOR SERVICE TECHNICIAN’S USE ONLY PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY a. Do not operate or allow the oven to be operated with the door open. b. Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: 1. Interlock Operation 2. Proper Door Closing 3. Seal and Sealing Surfaces (Arcing, Wear and Other Damage) 4. Damage to or Loosening of Hinges and Latches 5. Evidence of Dropping or Abuse c. Before turning on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, waveguide or transmission line, and cavity for proper alignment, integrity and connections. d. Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in service manual before the oven is released to the owner. e. A microwave leakage check to verify compliance with the CSA should be performed on each oven prior to release to the owner. f. Do not attempt to operate the oven if the door glass is broken.
2
FOR SERVICE TECHNICIAN’S USE ONLY Diagnostics General Procedure: Error Codes
IMPORTANT: Before powering MWO magnetron, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity. Unplug oven or disconnect power before performing the following checks: ■ A potential cause of a control not functioning is corrosion on connections. Observe connections and check for continuity with an ohmmeter. ■ All tests/checks should be made with a VOM or DVM having a sensitivity of 20,000Ω per volt DC or greater. ■ Check all connections before replacing components, looking for broken or loose wires, failed terminals, or wires not pressed into connectors far enough. Damaged harness must be entirely replaced. Do not rework a harness. ■ Resistance checks must be made with power cord unplugged from outlet, and with wiring harness or connectors disconnected. IMPORTANT: Do not replace the control if there is no evidence of any failure.
NOTE: All failures are stored in the failure history. To check if the error code is still present, start a cooking function and wait 1 minute to check if the error appears. 1. Plug in oven or connect power. 2. Enter Diagnostics Mode. 3. Touch or scroll to “Error Diagnostics” in the Diagnostics menu, and then touch “OK.”
350 35
To Enter Diagnostics Mode: Before proceeding with any corrective action, perform the following steps to enter the Diagnostics Mode. 1. Enter Diagnostics Mode by pressing LOWER OVEN>LOWER LIGHT>OVEN CANCEL (repeat two more times) TIP: You can also swipe your finger from left to right over the buttons 3 times. NOTE: You do not need to wait for any audible or visual feedback from the control between keypad presses. 2. If control does not enter Diagnostics, continue repeating the keypad sequence from Step 1. All the keypads will light up when the control enters Diagnostics. 3. From the Diagnostic Menu, scroll to the desired selection using the touch screen. Error Diagnostics: View and clear the failure history. Component Activation: Manually activate each relay. Sensors & Switches: View the traditional oven cavity temperatures and door/latch switch status. System Information: View the model number, serial number, and software versions. Wi-Fi: View Wi-Fi related content such as IP Address, Gateway, SSID, and connection status. Exit Diagnostics
4. 5.
To clear error codes, touch “Clear History.” If no failures are listed, the message “No Error” will appear on the screen.
General Procedure: Component Activation 1. 2. 3. 4.
3
Plug in oven or connect power. Enter Diagnostics Mode. Touch or scroll to “Component Activation” in the Diagnostics menu, and then touch “OK.” Touching the following selections will activate/ deactivate corresponding relay.
FOR SERVICE TECHNICIAN’S USE ONLY 4.
Touch or scroll through the Sensors & Switches menu to view the desired status. NOTE: Touching “Back” will return the display to the main Diagnostics menu.
Selection
Relay
MW Light
MW Light Relay
MW Turntable
MW Turntable Relay
General Procedure: System Information
MW Cooling Fan
MW Cooling Fan Relay
NOTE: This procedure is to view the following system information:
MW Grill
MW Broil Element Relay
MW Convection Element
MW Convection Element Relay
MW Convection Fan
MW Convection fan Relay
MW Magnetron/ Cooling Fan
MW Magnetron and MW Cooling Fan Relay
Oven Bake Element
Oven Bake Element Relay
Oven Broil Element
Oven Broil Element Relay
Convection Element - Up
Upper Convection Element Relay
Convection Element - Low
Lower Convection Element Relay
Convection Fan HS - Up
Upper High Speed Convection Fan Relay
Convection Fan LS - Up
Upper Low Speed Convection Fan Relay
Convection Fan HS - Low
Lower High Speed Convection Fan Relay
Convection Fan LS - Low
System Information
Display
Model #
Model Information
Serial #
Product Serial Number
UI Serial #
User Interface Serial Number
Oven ACU Serial #
Appliance Control Unit Serial Number
UI Version
User Interface Software Version
HMI Central SW
HMI Central Board Software Version
HMI Left SW
HMI Left Keyboard Software Version
HMI Left EE
HMI Left Keyboard EEPROM Version
HMI Right SW
HMI Right Keyboard Software Version
HMI Right EE
HMI Right Keyboard EEPROM Version
Kernel Version
HMI Central Board Software Version
Touch Calibration Version
LCD/TP FPC Tail Software Version
Lower Low Speed Convection Fan Relay
Database Version
HMI Central Board Database Structure
Oven Cooling Fan High Speed
Oven Cooling Fan High Speed Relay
Audio Version
HMI Central Board Software Version
Oven Cooling Fan Low Speed
Oven Cooling Fan Low Speed Triac
Oven ACU SW
Oven Appliance Control Unit Software Version
Oven Light
Oven Light Triac
MWO ACU SW
Microwave Oven Appliance Control Unit Software Version
Oven Door Latch Motor
Oven Door Latch Motor Relay
Diagnostics Entries
Number of times Diagnostic Menu has been entered
General Procedure: Sensors & Switches
1. 2. 3.
NOTE: This procedure is to view the current status of oven switches and sensor readings. Display
Status 4.
Plug in oven or connect power. Enter Diagnostics Mode. Touch or scroll to “System Information” in the Diagnostics menu, and then touch “OK.” Touch or scroll through the System Information menu to view the desired status. NOTE: Touching “Back” will return the display to the main Diagnostics menu.
MW Door Switch
Open or Closed
MW Cavity Temp
Degrees in Celsius
Oven Door Switch
Open or Closed
General Procedure: Model Selection
Oven Latch Switch
Open or Closed
Oven Cavity Temp
Degrees in Celsius
Oven Meat Probe Temp
Degrees in Celsius
NOTE: When a new User Interface is installed, you will be prompted to select a new model number upon power up. To change the model number on an existing UI, follow the steps below. 1. Plug in oven or connect power. 2. Enter Diagnostics Mode. 3. Touch or scroll to “System Information” in the Diagnostics menu, and then touch “OK.” 4. Touch or scroll to “Model Number,” and then touch “OK.” 5. Touch or scroll to the correct model number in the list, and then touch “Select.”
1. 2. 3.
Plug in oven or connect power. Enter Diagnostics Mode. Touch or scroll to “Sensors & Switches” in the Diagnostics menu, and then touch “OK.”
4
FOR SERVICE TECHNICIAN’S USE ONLY Failure/Error Display Codes Speaker, Control Panel Assembly
Switch Mode No Display - control is blank Power Supply (SMPS), User Interface (UI)
No Sound
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and power On). 1. Verify sound is enabled. Touch the Tools menu, and then scroll to the Sound Menu. Confirm Key Press, Timer & Alert, and Power On & Off actions are all turned on and set to the desired volume. 2. Unplug oven or disconnect power. 3. Confirm the speaker is firmly connected to the HMICentral/UI board at J8. If speaker is firmly connected, go to the Step 4. If speaker connection is loose, reconnect and proceed to Step 5.
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). 1. Unplug oven or disconnect power. 2. Remove plastic cover from UI. Check connection from display to UI. 3. Check wiring from main line to SMPS (CONN 7). HMI Left J6
User Interface
J4
N L2 L1
J5
J15
J7 HMI Right
Control Panel Assembly
1234
Speaker
OR
BK
YL CONN7 6 WH 2 SMPS 5 4 1 14 V DC 3 2 BK 1 15W CONN2
YL BU
OR YL
OR
BR OR 12345
BK WH Line BK P32 P33 20A Fuse BR Line L1 Filter 41 WH 42 WH 52 BU WH P31 P34 Cavity Thermostat
4. 5. 6. 7. 8.
9. 10. 11. 12. 13. 14. 15. 16.
4 3 2 1
P1
1 2
J8
RD
P1
Oven Appliance Manager
4. 5. 6. 7.
1 2 3 4 5 P26
Microwave Appliance Manager
Check the wiring harness connection at UI (J15). Check proper voltage input at J15-2 (GND) to J15-4 (14 VDC) on the UI by completing the following steps: Connect voltage measurement equipment to J15-2 and J15-4 on UI. Plug in oven or reconnect power. Measure voltage and confirm voltage reading is 14 VDC. If voltage is correct, unplug oven or disconnect power and go to Step 13. If voltage is not correct, go to Step 9. Unplug oven or disconnect power. Replace the SMPS. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Check for control board display. If still no display, unplug oven or disconnect power. Replace HMI-Central/UI board. Reassemble all parts and panels before operating. Plug in oven or reconnect power. If the UI was replaced, follow the on-screen prompts to select the model number. Verify operation is normal. If problem persists, replace the Control Panel Assembly and repeat steps 14 through 16.
User Interface not reacting to touch
2 J8 1
HMI-C User Interface
Replace speaker. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Confirm operation of the speaker. If problem persists, unplug oven or disconnect power, replace Control Panel Assembly, and repeat steps 5 through 7.
FAILURE
ERROR
LIKELY FAILURE CONDITION
F1 Internal
E0
Oven User Interface (UI) Failure
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” NOTE: If other error codes are stored, troubleshoot those other error codes first. 1. Unplug oven or disconnect power. 2. Confirm the control panel assembly is grounded to the oven chassis. If it is, go to Step 6. If it is not, fix the connection. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power and cycle power. 5. If error persists, unplug oven or disconnect power. 6. Replace HMI-Central/UI board. 7. Reassemble all parts and panels before operating. 8. Plug in oven or reconnect power and cycle power. 9. If error persists after HMI-Central/UI board is replaced, unplug oven or disconnect power and replace Control Panel Assembly. 10. Reassemble all parts and panels before operating. 11. Plug in oven or reconnect power. Follow the onscreen prompts for model selection. 12. Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history. If the Control Panel Assembly was replaced, there is no need to clear the error history.
Control Panel Assembly
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and power On). 1. Enter the Diagnostic Menu, and then touch POWER. 2. To reset Touch Calibration: unplug oven or disconnect power, wait 10 seconds, and then plug in oven or reconnect power. If still no response, go to Step 3. 3. Unplug oven or disconnect power. 4. Replace Control Panel Assembly. 5. Reassemble all parts and panels before operating. 6. Plug in oven or reconnect power. 7. Verify operation is normal.
5
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
F1
E1
Internal Oven ACU Error
FAILURE
ERROR
LIKELY FAILURE CONDITION
F1
E5
Microwave Oven Inverter Error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” NOTE: If other error codes are stored, troubleshoot those other error codes first. 1. Unplug oven or disconnect power. 2. Replace Copernicus Appliance Manager. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. If error persists after Copernicus Appliance Manager is replaced, unplug oven or disconnect power, and then go to Step 6. If not, go to Step 10. 6. Replace Control Panel Assembly. 7. Reassemble all parts and panels before operating. 8. Plug in oven or reconnect power. 9. Follow the on-screen prompts to select the model number 10. Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history. If the Control Panel Assembly was replaced, there is no need to clear the error history.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Make sure that all interlock switches works properly: when door is open, microwave light is on; when door is closed, microwave light is off. 2. Unplug oven or disconnect power. 3. Check the following connections on Microwave Appliance Manager: a. Relay 4903. b. Connector P8.
E4
To MW Relay 4903 P355
P354
BU WH
MW Inverter PWM
CN702
RD
CN703 E701 RD YL/ GN
Microwave Oven Relay 4903 Error 4.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Make sure that all interlock switches works properly: when door is open, microwave light is On; when door is closed, microwave light is Off. 2. Unplug oven or disconnect power. 3. Check the following on the Microwave Appliance Manager: a. Wire connections to Relay 4903. Line Fuse 20A
CN701
Magnetron
SUGGESTED CORRECTIVE ACTION PROCEDURE
L1
321
F1
P8
123
SUGGESTED CORRECTIVE ACTION PROCEDURE
BR 1 Primary 4 Interlock Switch
Microwave Relay 4903
BU
5. 6. 7. 8.
Inverter
9. 10. 11. 12. 13.
CN702
b.
Check if Relay 4903 is shorted. If so then go to Step 7. 4. Reassemble all parts and panels before operating. 5. Plug in oven or reconnect power. 6. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, go to Step 7. If not, go to Step 10. 7. Unplug oven or disconnect power and replace the Microwave Appliance Manager. 8. Reassemble all parts and panels before operating. 9. Plug in oven or reconnect power. 10. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
14. 15. 16. 17.
6
Check the following connections on the Inverter board: a. CN701. b. CN702. c. CN703. If the door works properly and all connections are okay, replace the Microwave Inverter Board. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 9. If not, go to Step 17. Unplug oven or disconnect power. Replace the Magnetron. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 14. If not, go to Step 17. Unplug oven or disconnect power and replace the Microwave ACU. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
ERROR
LIKELY FAILURE CONDITION
F1
E6
Microwave Generation Error
F2 Keypad
E0
Keypad disconnected
E1
Stuck/shorted key
SUGGESTED CORRECTIVE ACTION PROCEDURE
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Make sure that all interlock switches works properly: when door is open, microwave light is on; when door is closed, microwave light is off. 2. Unplug oven or disconnect power. 3. Check the following connections on Microwave Appliance Manager: a. Relay 4903.
L1
4. 5. 6. 7.
8. 9. 10. 11.
12. 13. 14. 15. 16.
Speaker
HMI Left
BR 1 Primary 4 Interlock Switch
Microwave Relay 4903
BU
BK RD
J6
21
Line Fuse 20A
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Check that connectors J4, J5, J6, and J7 are firmly connected. If they are not, go to Step 3. If they are, go to Step 6. J8
J4
Inverter
User Interface J15 1234
J5
J7
HMI Right
Control Panel Assembly
CN702
3. 4. 5.
If the door works properly and all connections are okay, replace the Magnetron. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 8. If not, go to Step 16. Unplug oven or disconnect power and replace the Inverter Board. Reassemble all parts and panels before operating. Plug in oven or reconnect power. To check if the error code is still present, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Wait 1 minute to check if the error appears. If error remains, then go to Step 12. If not, go to Step 16. Unplug oven or disconnect power. Replace the Microwave ACU. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
6. 7. 8. 9.
Reconnect any loose connectors. Reassemble all parts and panels before operating. Plug in oven or reconnect power. If the failure is gone, go to Step 9. If the failure is still present, unplug oven or disconnect power. Replace the Control Panel Assembly. Reassemble all parts and panels before operating. Follow the on-screen prompts to select the model number Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history. If the Control Panel Assembly was replaced, there is no need to clear the error history.
F3 Sensors
E0
Main oven sensor open or shorted
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Disconnect connector P3 from Oven Appliance Manager, and measure the resistance of the sensor between P3-1 and P3-2. Test for 1000Ω to 1200Ω at 77°F (25°C). Check sensor for short to ground. If checks on sensor are not correct, replace sensor and repeat the checks. V Oven Temperature Sensor
3. 4.
5. 6.
7
V
1 2 3 4 5 6 7 8 9 10 P3
Copernicus Appliance Manager
Reassemble all parts and panels and plug in oven or reconnect power. Enter the Diagnostics Menu and select “Sensors & Switches” to verify if the temperature shown in the Cavity Temp display is correct (ambient temperature). If it is, go to Step 8. If it is not, unplug oven or disconnect power. NOTE: On the status screen, the unit of measurement is Celsius. Replace the Copernicus Appliance Manager board. Reassemble all parts and panels before operating.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE 7. 8.
ERROR
LIKELY FAILURE CONDITION
Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
F3 Sensors
ERROR
LIKELY FAILURE CONDITION
F4
E1
Microwave Cavity Temperature Sensor Error
SUGGESTED CORRECTIVE ACTION PROCEDURE
Meat Probe Connector Jack or Meat Probe Shorted
E3
FAILURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function that uses the temperature sensor, such as a Convect cycle. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check that the P22 connection of the Microwave Appliance Manager is firmly connected. If it is, go to Step 3. If it is not, reconnect and go to Step 5.
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Remove meat probe if connected. 3. Disconnect connector P3 from Copernicus Appliance Manager.
Microwave Appliance Manager
Cavity Thermistor OR Meat Probe Sensor GN
1 2 3 4 5 6 7 8 9 10
P22
Copernicus Appliance Manager
3. P3
4.
5.
6. 7. 8.
Check connector jack resistance between P3-3 and P3-4. If it is 0Ω, change the jack assembly, and then go to Step 5. If it is not 0Ω, the jack assembly is working properly. Go to Step 5. Plug in the meat probe and check for short to ground or open. If checks on meat probe are not correct, replace the meat probe. At 77°F (25°C) the expected value is approximately 50KΩ. If they are correct, replace the Copernicus Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history. Check the meat probe reading by entering the Diagnostics Menu and selecting “Sensors & Switches.” The meat probe should detect the ambient temperature.
4.
5. 6. 7.
F4
Disconnect connector P22 from the Microwave Appliance Manager, and measure the resistance of the thermistor. It should be (approximately) 230kΩ at 77°F ± 10°F (25°C ± 10°C). Check thermistor for short to ground. If check on thermistor is not correct, replace the thermistor. If thermistor check is correct, replace the Microwave Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history. E2
Magnetron Temperature Sensor Error
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check that the P21 connection of the Microwave Appliance Manager is firmly connected. If it is, go to Step 3. If it is not, reconnect and go to Step 5.
Magnetron Thermistor
3.
4.
5. 6. 7.
8
Microwave Appliance Manager
P21
Disconnect connector P21 from the Microwave Appliance Manager. Measure the resistance of the thermistor. It should be (approximately) 10kΩ at 77°F ± 10°F (25°C ± 10°C). Check thermistor for short to ground. If check on thermistor is not correct, replace the thermistor. If thermistor check is correct, replace the Microwave Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
F4 Inputs
E4
Microwave Oven Humidity Sensor Error
4.
5. 6. 7.
LIKELY FAILURE CONDITION
F4
E8
Inverter Over Temperature
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check the following: a. Cooling fan connection for any loose connectors. b. Oven installation and make sure there is no air blockage at the bottom vent. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. To check if the cooling fan is stalled, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Make sure the fan is running. If it is not, unplug oven or disconnect power, replace the fan and go to Step 8. If it is, go to Step 6. 6. Unplug oven or disconnect power. 7. Replace the inverter board. 8. Reassemble all parts and panels before operating. 9. Plug in oven or reconnect power. 10. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function that uses the humidity sensor, such as a Steam cycle. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check that the P23 connection of the Microwave Appliance Manager is firmly connected. If it is, go to Step 3. If it is not, reconnect and go to Step 5.
3.
ERROR
SUGGESTED CORRECTIVE ACTION PROCEDURE
SUGGESTED CORRECTIVE ACTION PROCEDURE
Humidity Sensor 1600
FAILURE
Microwave Appliance Manager P23
Disconnect connector P23 from Microwave Appliance Manager and measure the resistance of the sensor: Between pins 3 and 1. It should be approximately 2800Ω at 77°F ± 10°F (25°C ± 10°C). Between pins 3 and 2. It should be approximately 2800Ω at 77°F ± 10°F (25°C ± 10°C). Check sensor for short to ground. If checks on sensor are not correct, replace the sensor. If sensor checks are correct, replace the Microwave Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
9
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
ERROR
LIKELY FAILURE CONDITION
F4
E9
Inverter and Magnetron Over Temperature
F5 Inputs
E0
Door and latch switch do not agree
SUGGESTED CORRECTIVE ACTION PROCEDURE
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). After powering on, be sure that a load, such as a microwavesafe cup of water, is present in the microwave oven cavity, and start a microwave cooking function. Wait 1 minute, and then verify that the failure happens again. 1. Unplug oven or disconnect power. 2. Check the following: a. Cooling fan connection for any loose connectors. b. Oven Installation and make sure there is no air blockage at the bottom vent. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. To check if the cooling fan is stalled, be sure that a load, such as a microwave-safe cup of water, is present in the microwave oven cavity, and start a cooking function in the microwave oven. Make sure the fan is running. If it is not, unplug oven or disconnect power, replace the fan and go to Step 8. If it is, go to Step 6. 6. Unplug oven or disconnect power. 7. Replace the Magnetron and the inverter board. 8. Reassemble all parts and panels before operating. 9. Plug in oven or reconnect power. 10. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Enter the Diagnostics Menu and select “Component Activation.” Touch or scroll to “Door Latch Motor,” and then touch “OK.” Touch “Latch Door.” Wait at least 15 seconds, and then check if latch status changes on screen. If status does not change, unplug oven or disconnect power and go to Step 2. If status changes, unplug oven or disconnect power and go to Step 5. 2. If the oven door did not unlatch, unplug connector P3 and check for continuity (on the latch wire) between P3-5 and P3-7.
TN
BU
1 2 3 4 5 6 7 Copernicus 8 9 10 Appliance Manager P3
Motor Latch Switch BR
OR/BK Door Switch
3. 4.
Disconnect J8 connector from Copernicus Appliance Manager. Measure the resistance between connectors J8-2 and P5-1. It should be 500Ω to 3000Ω at 77°F (25°C). N
1 2 3 4 5 6 7
Copernicus Appliance Manager
WH
YL Motor Door Latch
P5 1 2 J8
5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
10
WH
If the resistance check is outside the range, replace the affected door latch assembly. Verify that the error is gone. Reassemble all parts and panels. Plug in oven or reconnect power. Enter the Diagnostics Menu and select “Component Activation.” Check the door status on the screen by opening and closing the oven door. If status does not change, unplug the oven or disconnect power. Check for continuity with door open and closed at P3-5 to P3-6. Door open = infinite resistance. Door closed = zero resistance. If continuity check is not correct, replace the door latch assembly. If all checks were correct, replace Copernicus Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
F5 Inputs
E1
Latch not operating
FAILURE
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Enter the Diagnostics Menu and select “Component Activation.” Touch or scroll to “Door Latch Motor,” and then touch “OK.” Touch “Latch Door.” Wait at least 15 seconds, and then check if latch status changes on screen. If status does not change, go to Step 2. If status changes, unplug oven or disconnect power, replace Copernicus Appliance Manager and go to Step 6. 2. If latch status on screen is “open,” unplug oven or disconnect power and check for loose harness connection between motor latch switch and P3-5 and P3-7.
TN
LIKELY FAILURE CONDITION
E0
Oven user interface lost communication
E6
Oven appliance manager lost communication
F6
SUGGESTED CORRECTIVE ACTION PROCEDURE
BU
ERROR
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Check continuity of wirings between P1-4 and J15-3, then P1-5 and J15-2. 3. Check for continuity between P1-1 and P1-2. 4. If all checks are correct, replace Copernicus Appliance Manager.
HMI Left
User Interface
J4
J6
J15
1 2 3 4 5 6 7 8 Copernicus 9 10 Appliance Manager P3
J5
J7
HMI Right
Control Panel Assembly
1234
OR
N L2 L1
YL WH BK
Motor Latch Switch
2 1
CONN7 CONN26
SMPS 14V DC 15 W
5 4 3 2 1
YL BU
BR OR
P1
12345
Oven Appliance Manager
BR
5. 6. 7.
Reassemble all parts and panels. Plug in oven or reconnect power. If the error appears again, unplug oven or disconnect power. 8. Replace HMI-Central/UI board. 9. Reassemble all parts and panels before operating. 10. Plug in oven or reconnect power. 11. Follow the on-screen prompts to select the model number if the UI was replaced. 12. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
OR/BK Door Switch
3. 4.
Disconnect connector J8 from Copernicus Appliance Manager. Measure the resistance between connectors J8-2 and P5-1. It should be 500Ω to 3000Ω at 77°F (25°C). N
1 2 3 4 5 6 7
Copernicus Appliance Manager
WH
YL Motor Door Latch
P5 1 2 J8
5.
6. 7. 8.
WH
If the resistance check is outside the range, replace the door latch assembly. Verify that the error is gone. If all checks were correct, replace Copernicus Appliance Manager. Reassemble all parts and panels before operating. Plug in oven or reconnect power. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
11
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
F6
E1
Over temperature
8.
SUGGESTED CORRECTIVE ACTION PROCEDURE
ERROR
LIKELY FAILURE CONDITION
Check sensor for short to ground. If checks on sensor are not correct, replace sensor and repeat the checks. V Oven Temperature Sensor
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Check for elements shorted to ground. Check resistance of elements: a. PX4-2 and PX3-2 to check Broil element (13.2Ω to 14.6Ω). b. PX1-1 and PX3-2 to check Bake element (19Ω to 21Ω). c. PX1-3 and PX3-2 to check Upper Conv element (15.2Ω to 17.3Ω). d. PX2-4 and PX3-2 to check Lower Conv element (15.2Ω to 17.3Ω). 3. If any element is shorted to ground, replace the element. 4. Check for shorted relays. Disconnect PX1, PX2 and PX4 connectors and check for shorts between: a. PX1-1 and PX1-2 (Bake relay). b. PX1-3 and PX1-4 (Up Convect relay). c. PX4-1 and PX4-2 (Broil relay). d. PX2-3 and PX2-4 (Low Convect relay).
K11
F6
PX4 RD K10 K2
PX1 K3
BU
Bake - 2800W
RD
YL
Upper Convect - 3400W
YL RD
1 2
BK 12 12
RD
PX3 RD/WH K1
5. 6. 7.
1 2 3 4
PX2 YL Lower Convect - 3400W YL
E4
User Interface/Appliance Manager state status mismatch
NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Replace Copernicus Appliance Manager. 3. Reassemble all parts and panels before operating. 4. Plug in oven or reconnect power. 5. Cycle power. If error persists after the Copernicus Appliance Manager is replaced, unplug oven or disconnect power. Go to Step 7. 6. If the error is gone, go to Step 10. 7. Replace the HMI-Central/UI board. 8. Reassemble parts and panels before operating. 9. Plug in oven or reconnect power, and follow the onscreen prompts for model selection. 10. Verify operation is normal. If operation is normal, go to Step 14. If error still exists, go to Step 11. 11. Unplug oven or disconnect power. 12. Replace the control panel assembly. 13. Plug in oven or reconnect power. 14. Follow the on-screen prompts for model selection. 15. Verify operation is normal. Enter Diagnostics Mode, select “Error Diagnostics,” and clear the history.
BK
1 2 3 4
Copernicus Appliance Manager
SUGGESTED CORRECTIVE ACTION PROCEDURE
BK BU Broil - 4000W
1 2
1 2 3 4 5 6 7 8 9 10 P3
9. Reassemble all parts and panels before operating. 10. Plug in oven or reconnect power. 11. Enter the Diagnostic Menu and select “Sensors & Switches” to verify that the corresponding oven temperature displayed is correct (ambient temperature). If not, unplug oven or disconnect power, and replace the Copernicus Appliance Manager board. NOTE: On the status screen, the unit of measurement is Celsius. 12. Reassemble all parts and panels before operating. 13. Plug in oven or reconnect power. 14. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
N L2 L1 Copernicus Appliance Manager
V
Temperature Limiter Open Temp 302°F (150°C)
BK
If there is a shorted relay, replace the Copernicus Appliance Manager. Go to Step 9. If everything is correct, disconnect connector P3 from Copernicus Appliance Manager. Measure the resistance of the oven sensor. It should be 1000Ω to 1200Ω at 77°F (25°C).
12
FOR SERVICE TECHNICIAN’S USE ONLY FAILURE
ERROR
LIKELY FAILURE CONDITION
FAILURE
ERROR
LIKELY FAILURE CONDITION
E0
Product not wired correctly
E8
Lost communications with Microwave Oven Appliance Manager
F9
F6
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Unplug oven or disconnect power. 2. Access the electrical wiring from the house power supply to the oven. 3. Check house wiring to the product. Check to see if the neutral connection is switched with L1 or L2 (refer to the Installation Instructions for product wiring). 4. Reassemble all parts and panels before operating. 5. Plug in oven or reconnect power. 6. Verify operation is normal by running a cooking function. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
SUGGESTED CORRECTIVE ACTION PROCEDURE NOTE: Before starting any test, cycle power to the oven (power Off, wait 10 seconds, and then power On). PROCEDURE: Before proceeding, verify the error code by entering the Diagnostics Menu and selecting “Error Diagnostics.” 1. Make sure the oven is plugged in. Open microwave door to check if light comes on. 2. Ensure the Sabbath mode is disabled. 3. Unplug oven or disconnect power. 4. Check the connection between User Interface J15-2 (yellow) and J15-3 (orange) and Microwave Appliance Manager P26-3 (orange) and P26-4 (yellow). User Interface Wide/Power Nav YL
OR
1 2 3 4
J15 OR
YL
1 2 3 4 5
P26 Microwave Appliance Manager
5.
If harness is correct, replace the Microwave Appliance Manager. 6. Reassemble all parts and panels before operating. 7. Plug in oven or reconnect power. 8. If the error appears again, unplug or disconnect power and replace HMI-Central/UI board. 9. Reassemble all parts and panels before operating. 10. Plug in oven or reconnect power. 11. Follow the on-screen prompts to select the model number if the UI was replaced. 12. Verify operation is normal. Enter the Diagnostics Menu, select “Error Diagnostics,” and clear the history.
13
FOR SERVICE TECHNICIAN’S USE ONLY Microwave Oven Components Component Locations Upper Microwave Oven
R
T S
Q P
VU
O N M A
D
B C E
L F
G H
I J K
14
A. Convect motor B. Convect thermostat (behind cover) C. Convect element D. Line filter E. Humidity sensor F. Magnetron fan motor G. Copernicus appliance manager (lower oven) H. Switch mode power supply (SMPS) I. Secondary interlock switch J. Turntable motor K. Broil element L. Microwave appliance manager M. Cavity halogen lamp N. Primary interlock switch O. Monitor interlock switch P. Magnetron thermistor Q. Magnetron R. Microwave light transformer S. Microwave inverter T. Cavity temperature sensor U. Grill thermostat V. Cavity thermostat Not shown: Monitor fuse, 20A line fuse
FOR SERVICE TECHNICIAN’S USE ONLY Lower Oven
A. HMI-Central/UI board B. Cooling fan C. Oven temperature sensor D. Convection assembly
E. Temperature limiter F. Light assembly G. Bake element (hidden) H. Broil element
15
I. Door lock assembly J. Control panel assembly K. WiFi antenna
FOR SERVICE TECHNICIAN’S USE ONLY Cooling Fan Relay Logic Oven High Speed Blower (Main/Upper or Lower)
Oven Low Speed Blower (Main/Upper or Lower)
Oven Cooking - Cold
-
O
Oven Cooking - Warm
-
O
Oven Cooking - Hot
O
-
Oven Self-Clean
O
-
LEGEND Cold
Cavity Temperature is less than 212°F (100°C)
Warm
Cavity Temperature is between 212°F and 599°F (100°C and 315°C)
Hot
Cavity Temperature is greater than 599°F (315°C)
Mode
Bake
Broil
Upper Lower Upper Lower Convect Convect Convect Convect Ring Ring Fan Fan
Convect Frozen Pizza
C
C
C
C
O
O
Convect Pastry
C
C
C
C
C
C
Convect Slow Roast 12 hrs
C
C
C
C
O
O
Convect Slow Roast 8 hrs
C
C
C
C
O
O
Convect Slow Roast 4 hrs
C
C
C
C
O
O
Convect Roast
C
C
C
C
O
O
Convect Broil
-
C
-
-
C
C
Convect Bake
C
C
C
C
C
C
Convect Bake- Rapid Preheat C
C
C
C
C
C
Bake
C
C
C
C
C
C
Broil
-
C
-
-
-
-
Keep Warm
C
C
-
-
C
C
Rapid Proof
C
C
-
-
-
-
Proof
C
C
-
-
-
-
No Preheat
C
C
C
C
C
C
True Convect
C
C
C
C
C
C
Self Clean
C
C
-
-
-
-
LEGEND Relay Off
Relay Cycles
Relay On
Not Available
-
C
O
NA
16
FOR SERVICE TECHNICIAN’S USE ONLY Component Testing Chart - Oven To properly check for voltage, complete the following steps: 1. Unplug oven or disconnect power. 2. Connect voltage measurement equipment to check points.
3. 4.
Plug in oven or reconnect power and confirm voltage reading. Unplug oven or disconnect power.
Component
Serviceable Side
Check Points Copernicus
Results-Resistance Results-Voltage
Lights
Front
P7-1 to L1 (J8-1)
0-40Ω
120V
Latch Switch
Front
P3-7 to P3-5
Open circuit
Door Switch
Front
P3-6 to P3-5
Closed circuit with oven door closed
Latch Motor
Front
P5-1 to N (J8-2)
500 to 3000Ω
Oven Temperature Sensor
Front
P3-1 to P3-2
1075Ω at 68°F (20°C)DLB
Meat Probe
Side
P3-3 to P3-4
9876-10075Ω
Blower Motor High Speed
Rear
PX2-2 to L1 (J8-1)
15Ω to 23Ω
120V motor running
Blower Motor Low Speed
Rear
P7-2 to L1 (J8-1)
15Ω to 23Ω
120V motor running
Thermal Limiter
Rear
PX3-1 to L2 (Main line)
Closed circuit
0V closed, N/A open
Thermal Fuse (only for single/double)
Front
J8-1 to L1
Closed circuit
0V closed, N/A open
Upper Convection Fan - High Speed
Rear
P5-3 to N (J8-2)
15 to 22Ω
120VAC motor running
Upper Convection Fan - Low Speed
Rear
P5-2 to N (J8-2)
17 to 25Ω
120VAC motor running
Lower Convection Fan - High Speed
Rear
P5-5 to N (J8-2)
15 to 22Ω
120VAC motor running
Lower Convection Fan - Low Speed
Rear
P5-4 to N (J8-2)
17 to 25Ω
120VAC motor running
Upper Convection Element
Front
PX1-3 to PX3-2
15.2 to 17.3Ω
240 VAC Convection cycle operating
Lower Convection Element
Front
PX2-4 to PX3-2
15.2 to 17.3Ω
240 VAC Convection cycle operating
Bake Element
Rear
PX1-1 to PX3-2
19.0 to 21.6Ω
240V Bake cycle operating
Broil Element
Front
PX4-2 to PX3-2
13.5 to 14.92Ω
240V Broil cycle operating
User Interface Board
Front
J15-2 to J15-4
N/A
14 VDC
Copernicus Appliance Manager
Side (Combo)
P1-2 to P1-5
N/A
14 VDC
17
120V motor running
FOR SERVICE TECHNICIAN’S USE ONLY NOTES: ■ Disconnect the harness from the board before performing measurements. ■ See the following table for connector pin identification. Copernicus Appliance Manager PX3 Pin 1
Pin 1
P6
P7
Pin 1
PX4
K11
PX2-1 PX2-2
PX1-4
P4
K3
Pin 1
K9 K9A
PX2-3 PX2-4 PX1-4 PX1-3
Pin 1
P3
K2 K2A K10 K4 K5 K6 K7 K8
J8
PX1-2 PX1-1 Pin 1
K10A
P5
Pin 1
K1 K1A
P1
Pin 1
Pin 1
18
Harness Connector Pin
Copernicus Appliance Manager Pin
PX1-1
J12
PX1-2
J16
PX1-3
J13
PX1-4
J17
PX2-1
J19
PX2-2
J15
PX2-3
J18
PX2-4
J14
FOR SERVICE TECHNICIAN’S USE ONLY Component Testing Chart - Microwave Component Serviceable Procedure Side
Results Resistance
Appliance Manager
Top
Check wiring to MW microwave appliance manager: 1. Unplug the microwave oven or disconnect power. 2. Visually inspect connectors on the microwave appliance manager, P1, P2, P8, P21, P22, P23, P26, P354, P355 and the top connectors (relays 4903, 4904 and 4905) to see whether there are signs of overheating or any signs of failure due to loose wires, bad crimping, etc. 3. Reassemble all parts and panels before operating. 4. Plug in microwave oven or reconnect power.
Cavity Thermostat
Top
1. 2. 3. 4. 5.
Magnetron Fan Motor
Top
Turntable Motor
Bottom
Monitor Fuse
Top
1. 2. 3. 4. 5.
MW Light Transformer
Top
1. 2. 3. 4. 5.
Line Fuse
Top
1. 2. 3. 4. 5.
6. 1. 2. 3. 4. 5. 6. 1. 2. 3. 4. 5. 6.
6.
6.
6.
Component Location G
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
V
Unplug microwave oven or disconnect power. Normal = 15Ω Abnormal = Infinite Remove wire leads. Measure resistance (ohmmeter scale: Rx1). Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
F
Unplug microwave oven or disconnect power. Normal =2500Ω (approximately) Remove wire leads. Abnormal = Infinite Measure resistance (ohmmeter scale: Rx1). Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
J
Unplug microwave oven or disconnect power. Normal = Continuity Remove wire leads. Abnormal = Infinite Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Not shown
Unplug microwave oven or disconnect power. Remove wire leads. Measure resistance (ohmmeter scale: Rx1). Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Primary Winding = 40Ω (approximately) Secondary Winding = 0.4Ω (approximately)
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
19
R
Not shown
FOR SERVICE TECHNICIAN’S USE ONLY Component Serviceable Procedure Side Primary Interlock Switch
Top
Results Resistance
Test 1: Test 1: 1. Unplug microwave oven or disconnect power. Door Open = Infinite. 2. Disconnect the wires at the Primary Interlock Door Closed = Continuity. Switch. 3. Check from the common terminal (brown wire) to the normally open terminal (yellow wire). 4. Reconnect the wires at the Primary Interlock Switch. 5. Reassemble all parts and panels before operating. 6. Plug in microwave oven or reconnect power.
Component Location N
Test 2: Test 2: 1. Unplug microwave oven or disconnect power. Door Open = Continuity. 2. Disconnect the wires at the Primary Interlock Door Closed = Infinite Switch. 3. Check from the common terminal (brown wire) to the normally closed terminal (blue wire). 4. Reconnect the wires at the Primary Interlock Switch. 5. Reassemble all parts and panels before operating. 6. Plug in microwave oven or reconnect power. Secondary Interlock Switch
Top
1. 2. 3. 4. 5. 6.
Monitor Interlock Switch
Top
1. 2. 3. 4. 5. 6.
Halogen Light
Top
1. 2. 3. 4. 5. 6.
Unplug microwave oven or disconnect power. Door Open = Continuity. Door Closed = Infinite Disconnect the wires at the Secondary Interlock Switch. Check from the common terminal (blue wire) to the normally open terminal (white wire). Reconnect the wires at the Secondary Interlock Switch. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
I
Unplug microwave oven or disconnect power. Door Open = Continuity. Disconnect the wires at the Monitor Interlock Door Closed = Infinite Switch. Check from the common terminal (yellow wire) to the normally closed terminal (blue wire). Reconnect the wires at the Monitor Interlock Switch. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
O
Unplug microwave oven or disconnect power. Normal = approximately 3Ω Remove wire leads. Abnormal = Infinite Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
M
20
FOR SERVICE TECHNICIAN’S USE ONLY Component Serviceable Procedure Side
Results Resistance
Inverter
Top
Check wiring to MW inverter: 1. Unplug the microwave oven or disconnect power. 2. Visually inspect 4 connectors on the MW inverter boards, CN701, CN702, CN703 and E701 to see whether there are signs of overheating or any signs of failure due to loose wires, bad crimping, etc. 3. Reassemble all parts and panels before operating. 4. Plug in microwave oven or reconnect power.
Magnetron
Top
1. 2. 3. 4. 5. 6.
Line Filter
Top
Humidity Sensor
Top
1. 2. 3. 4. 5. 6. 1. 2. 3. 4. 5. 6.
Magnetron Thermistor
1. 2. 3. 4. 5. 6.
Grill Thermostat
Top
Convect Thermostat
Rear
1. 2. 3. 4. 5. 6. 1. 2. 3. 4. 5. 6.
Component Location S
Unplug microwave oven or disconnect power. Remove wire leads. Check that the seal is in good condition. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Filament Terminals Normal = /= 300kΩ Abnormal /= 100kΩ
D
Unplug microwave oven or disconnect power. Remove the 3-pin connector from MW Appliance Manager. Measure resistance across pins 1 and 3 and across pins 2 and 3. Replace the 3-pin connector from MW Appliance Manager. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Normal = 2.8kΩ (approximately) at 77°F +/- 10°F (25°C +/- 10°C) Abnormal = Infinite.
E
Unplug microwave oven or disconnect power. Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Normal = 10kΩ (approximately) at 77°F +/- 10°F (25°C +/-10°C) Abnormal = Infinite.
P
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
U
Unplug microwave oven or disconnect power. Normal = Continuity Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
B
21
FOR SERVICE TECHNICIAN’S USE ONLY Component Serviceable Procedure Side Broil Element
Rear
1. 2. 3. 4. 5. 6.
Convect Element
Rear
1. 2. 3. 4. 5. 6.
Cavity Temp Rear Sensor
1. 2. 3. 4. 5. 6.
Convect Fan Rear Motor
1. 2. 3. 4. 5. 6.
Results Resistance
Component Location
Unplug microwave oven or disconnect power. Normal = 9Ω Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
K
Unplug microwave oven or disconnect power. Normal = 12Ω Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
C
Unplug microwave oven or disconnect power. Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
Normal = 230KΩ (approximately) at 77°F ±10°F (25°C ±10°C) Abnormal = Infinite
Unplug microwave oven or disconnect power. Normal = 48Ω Abnormal = Infinite Remove wire leads. Measure resistance. Replace wire leads. Reassemble all parts and panels before operating. Plug in microwave oven or reconnect power.
22
T
A
FOR SERVICE TECHNICIAN’S USE ONLY Wiring Diagrams NOTES: ■ End of line tester (EOL) is for manufacturing purposes only. ■ Dots indicate connections or splices.
HMI-C User Interface
J4
J6
Antenna
J8
RD HMI Left
■
Circuit shown in STANDBY/OFF mode with oven door closed. All voltages in the wiring diagrams are designated as 120/240 VAC. If oven is connected to 120/208 VAC, replace 240V with 208V.
Control Panel Assembly
21
Speaker BK
■
J5
J7
HMI Right N L2 L1
WIFI CORE
N L2 L1
J15
J1
1234
EOL
12
OR
RD/WH
GN
YL CONN7 CONN2 SMPS 14V DC 15W
654321
BK
21
WH
OR
YL
BR OR 12345
BU
J8
K11
K2
YL
V Oven Temperature Sensor
OR GN
BU
TN
K3
K1
71 BR
51 BU
Humidity Sensor 1600
K4 K5 K6 K7 K8
P26
Fuse 250mA
Control Inverter
Grill Relay 4904
17 WH
P1 MW Relay 4903 P21
CN701 MW Inverter PWM CN703 E701 63 WH CN702 90 RD 91 RD 19 YL/ GN Magnetron
9 BU
P355
P22 P23
P8
P354 Microwave Appliance Manager 1
Conv. 1200W 18 BU
BK
Low Convect - 3400W
BK Oven Lights
P7
GY
LS Cooling Fan WH WH
YL
P5
Motor Door Latch RD OR/WH LS Convect Fan - Upper HS Convect Fan - Upper
Convection Thermostat Opens at 293°F (145°C) Closes at 221°F (105°C)
Enclosed Thermistor
Plug With Female Connector
Latch Switch
Receptacle With Male Connector
44 BU 3 BK
2 Secondary Interlock Switch 4 61 WH
AC Drive Motor
Light(s)
Door Switch Relay Contact
Heating Element
Thermal Fuse Temperature Limiter Thermoactuator Microwave Light (NonMagnetron Transformer Resettable)
23
WH
WH LS Convect Fan - Lower HS Convect Fan - Lower
LEGEND
Ground (Chassis)
BK
YL
RD
GY GY/BK Broil 1600W
WH
HS Cooling Fan
2 BK
Conv. Relay 4905
321
42 WH Grill r The mostat
P2
123
80 89 BK BK Primary Interlock Conv. Fan 20A Switch 2 Line Fuse 1 22 BR 31 4 8 BU YL 2 1 21 BR 32 YL Magnetron Monitor Interlock 4 Thermistor 43 BU Cavity Switch Cavity 52 BU Thermostat Thermistor
1234
12 BU
41 WH
RD 86 BR MW Light Transformer Conv. Thermoactuator
RD
YL
1234567
P33 Line Filter L1 P31 P34
TR2 12 345
123456 7 8
WH
72 BR
P32
TR1
1234
BK
Turntable 84 BK 83 BK 4901 Magnetron Fan Halogen Light RD 85 BR 4902
BK
Temperature Limiter Open Temp 302°F (150°C)
PX2 YL
Door Switch OR/BK
4906
BK
PX1 RD
1 23 4
81 BR
RD
YL Up Convect - 3400W YL
RD/WH K9
BR 82 BR
RD
PX3
P3
Motor Latch Switch
Bake - 2800W
12
14 RD
V
123456 7 8 910
Meat Probe Sensor
PX4 1234
K10 OR
BK BU Broil - 4000W BU
12
Copernicus Appliance Manager
12
BK WH
P1
Fuse
BK
FOR SERVICE TECHNICIAN’S USE ONLY
For patent information, please see Pat. www.patent-listing.com
W10767738B © 2015. All rights reserved.
W10767738B NOTE: This sheet contains important Technical Service Data. FOR SERVICE TECHNICIAN ONLY DO NOT REMOVE OR DESTROY 6/15
FOR SERVICE TECHNICIAN’S USE ONLY
