Jenn-Air JMW2427IL, JMW2430IM Tech Sheet
FOR SERVICE TECHNICIAN’S USE ONLY
WARNING
DANGER
Tech Sheet Do not remove or destroy
W11284425B
Electrical Shock Hazard
Only authorized technicians should
perform diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can
result in death or electrical shock.
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.
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death or
electrical shock.
Voltage Measurement Safety Information
10/18
FOR SERVICE TECHNICIAN’S USE ONLY
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
-OR-
Touch 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.
2
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.
3
FOR SERVICE TECHNICIAN’S USE ONLY
35
0
Diagnostics
IMPORTANT: Before powering microwave (MW) magnetron, be surethat a
load, such as a microwave-safe cup of water, is present in the microwave
oven cavity.
Unplug oven or disconnect power before performing thefollowing checks:
■ A potential cause of a control not functioning is corrosion on connections.
Observe connections andcheck for continuity with an ohmmeter.
■ All tests/checks should be made with a VOM or DVM having a sensitivity
of 20,000 Ω 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.
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 2more times).
TIP: You can also swipe your nger from left to right overthe keypads 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 mode, continue repeating the
keypad sequence from Step 1. All the keypads will light up when the
control enters Diagnostics mode.
3. From the Diagnostics 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.
Exit Diagnostics
General Procedure: Error Codes
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.”
4. To clear error codes, touch “Clear History.”
5. If no failures are listed, the message “No Error” will appear on the screen.
4
General Procedure: Component Activation
1. Plug in oven or connect power.
2. Enter Diagnostics mode.
3. Touch or scroll to “Component Activation” in the Diagnostics menu, and
then touch “OK.”
4. Touching the following selections will activate/ deactivate corresponding
relay.
Selection Relay
MW Light MW Light Relay
MW Turntable MW Turntable Relay
MW Cooling Fan MW Cooling Fan Relay
MW Grill MW Broil Element Relay
MW Convection Element MW Convection ElementRelay
MW Convection Fan MW Convection fan Relay
MW Magnetron/Cooling Fan
Oven Bake Element Oven Bake Element Relay
Oven Broil Element Oven Broil Element Relay
Oven Convection Element Oven Convection ElementRelay
Oven Convection Fan Oven Convection Fan Relay
Oven Cooling FanHigh Speed Oven Cooling Fan High-SpeedRelay
Oven Cooling FanLowSpeed Oven Cooling Fan Low-SpeedRelay
Oven Light Oven Light Relay
Oven Door LatchMotor Oven Door Latch Motor Relay
MW Magnetron and MWCooling Fan
Relay
General Procedure: Sensors & Switches
NOTE: This procedure is to view the current status of oven switches and
sensor readings.
Display Status
MW Door Switch Open or Closed
MW Cavity Temp Degrees in Celsius
Oven Door Switch Open or Closed
Oven Latch Switch Open or Closed
Oven Cavity Temp Degrees in Celsius
Oven Meat Probe Temp Degrees in Celsius
1. Plug in oven or connect power.
2. Enter Diagnostics mode.
3. Touch or scroll to “Sensors & Switches” in the Diagnostics menu, and
then touch “OK.”
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.
5
FOR SERVICE TECHNICIAN’S USE ONLY
General Procedure: System Information
NOTE: This procedure is to view the following system information:
System Information Display
Model # Model Information
Serial # Product Serial Number
UI Serial # User Interface Serial Number
Oven ACU Serial # Appliance Control UnitSerialNumber
UI Version User Interface Software Version
HMI Central SW HMI Central Board SoftwareVersion
HMI Left SW HMI Left Keyboard SoftwareVersion
HMI Left EE HMI Left Keyboard EEPROMVersion
HMI Right SW HMI Right Keyboard SoftwareVersion
HMI Right EE HMI Right Keyboard EEPROMVersion
Kernel Version HMI Central Board SoftwareVersion
Touch Calibration Version LCD/TP FPC Tail SoftwareVersion
Database Version HMI Central Board DatabaseStructure
Audio Version HMI Central Board SoftwareVersion
Oven ACU SW
MWO ACU SW
Diagnostics Entries
Oven Appliance Control UnitSoftware
Version
Microwave Oven Appliance Control
Unit Software Version
Number of times Diagnostics menu has
been entered.
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 through the System Information menu to view the desired
status.
NOTE: Touching “Back” will return the display to the main Diagnostics
menu.
General Procedure: Model Selection
NOTE: When a new User Interface (UI) is installed, you will beprompted 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 theDiagnostics 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 inthelist, and then touch
“Select.”
6
Failure/Error Display Codes
NL
Thermostat
No Display - control is blank
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and 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).
Switch Mode Power Supply (SMPS), User
Interface (UI)
12. Check for control board display. If still no display, unplug oven or
disconnect power.
13. Replace HMI-Central/UI board.
14. Reassemble all parts and panels before operating.
15. Plug in oven or reconnect power. If the UI was replaced, follow the on-
screen prompts to select themodel number.
16. Verify operation is normal. If problem persists, replacethe Control Panel
Assembly and repeat steps14 through 16.
SMPS
14 V DC
15W
CONN2
Cavity
User Interface
1234
6
5
YL
4
3
2
BU
1
52 BU
J15
2L1
BK
P32
WH
P31
J6
CONN7
WH
2
1
BK
Line
20A Fuse
P33
BR
Line
L1
Filter
42 WH
41 WH
P34
OR
12345
P1
4
3
Microwave
2
1
Appliance
Manager
J5
J7 HMI RightHMI Left J4
Control Panel Assembly
OR
YL
OR
YL
BK
WH
P26
OR
BR
12345
Oven
Appliance
1
2
Manager
J8
4. Check connection from wiring harness to UI (J15).
5. Check proper voltage input at J15-2 (GND) to J15-4 (14 VDC) on the UI
by completing the following steps.
6. Connect voltage measurement equipment to J15-2 and J15-4 on UI.
7. Plug in oven or reconnect power.
8. Measure voltage and conrm voltage reading is 14VDC. If voltage is
correct, unplug oven or disconnect power and go to Step 13. If voltage
isnotcorrect, go to Step 9.
9. Unplug oven or disconnect power. Replace theSMPS.
10. Reassemble all parts and panels before operating.
11. Plug in oven or reconnect power.
P1
7
FOR SERVICE TECHNICIAN’S USE ONLY
Speaker
User Interface not reacting
to touch
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 Diagnostics menu, and then touch POWER.
2. To reset Touch Calibration: unplug oven or disconnect power, wait 10
seconds, and then pluginoven 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.
Control Panel Assembly
No Sound Speaker, 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. Verify sound is enabled. Touch the Tools menu, and then scroll to the
Sound menu. Conrm 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. Conrm the speaker is rmly connected to the HMI-Central/UI board at
J8. If speaker is rmly connected, go to Step 4. If speaker connection
isloose, reconnect and proceed to Step 5.
BK
2
J8
1
RD
4. Replace speaker.
5. Reassemble all parts and panels before operating.
6. Plug in oven or reconnect power.
7. Conrm operation of the speaker. If problem persists, unplug oven or
disconnect power, replace Control Panel Assembly, and repeat steps 5
through 7.
HMI-C
User Interface
8
FAILURE ERROR LIKELY FAILURE CONDITION
F1
Internal
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode and selecting “Error Diagnostics.”
NOTE: If other error codes are stored, troubleshoot those other error codes
rst.
1. Unplug oven or disconnect power.
2. Conrm the control panel assembly is grounded to the oven chassis. If it
is, go to Step 6. If it is not, x 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 on-screen 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 noneed to clear the error history.
E0 Oven user interface failure
FAILURE ERROR LIKELY FAILURE CONDITION
F1 E1 Internal oven ACU error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode and selecting “Error Diagnostics.”
NOTE: If other error codes are stored, troubleshoot those other error codes
rst.
1. Unplug oven or disconnect power.
2. Replace the 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 9.
6. Replace Control Panel Assembly.
7. Reassemble parts and panels before operating.
8. Plug in oven or reconnect power.
9. Follow the on-screen prompts to select the modelnumber
10. Verify operation is normal. Enter Diagnostics mode, select “Error
Diagnostics,” and clear the history. If the Control Panel Assembly was
replaced, there is noneed to clear the error history.
9
FOR SERVICE TECHNICIAN’S USE ONLY
Line Fuse
Switch
L1
To
FAILURE ERROR LIKELY FAILURE CONDITION
F1 E4 Microwave oven relay4903error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and power on). After powering on, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity, and
start a microwave cooking function. Wait 1minute, and then verify that the
failure happens again.
1. Make sure that all interlock switches work properly: when door is open,
microwave light is on; when dooris closed, microwave light is off.
2. Unplug oven or disconnect power.
3. Check the following on the Microwave ApplianceManager:
a. Wire connections to Relay 4903
20A
BR
Primary
Interlock
b. Check if Relay 4903 is shorted. If so then gotoStep 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 1minute 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 thehistory.
1
4
Microwave Relay
4903
BU
Inverter
CN702
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 power on). After powering on, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity, and
start a microwave cooking function. Wait 1minute, and then verify that the
failure happens again.
1. Make sure that all interlock switches work properly: when door is open,
microwave light is on; when dooris closed, microwave light is off.
2. Unplug oven or disconnect power.
3. Check the following on the Microwave ApplianceManager:
a. Relay 4903
b. Connector P8
P8
MW
Relay
4903
P355
P354
1
2
3
BU
WH
CN702
Magnetron
3
2
CN701
1
MW Inverter
RD RD
PWM
CN703
E701
YL/
GN
4. Check the following connections on the Inverterboard:
a. CN701
b. CN702
c. CN703
5. If the door works properly and all connections areokay, replace the
Microwave Inverter Board.
6. Reassemble all parts and panels before operating.
7. Plug in oven or reconnect power.
10
8. To check if the error code is still present, be sure that a load, such as a
Line Fuse
Switch
L1
microwave-safe cup of water, is present in the microwave oven cavity,
and start a cooking function in the microwave oven. Wait 1minute to
check if the error appears. If error remains, then go to Step 9. If not, go to
Step 17.
9. Unplug oven or disconnect power.
10. Replace the Magnetron.
11. Reassemble all parts and panels before operating.
12. Plug in oven or reconnect power.
13. 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 1minute to
check if the error appears. If error remains, then go to Step 14. If not, go
to Step 17.
14. Unplug oven or disconnect power and replace theMicrowave ACU.
15. Reassemble all parts and panels before operating.
16. Plug in oven or reconnect power.
17. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear thehistory.
FAILURE ERROR LIKELY FAILURE CONDITION
F1 E6 Microwave generation error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and power on). After powering on, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity, and
start a microwave cooking function. Wait 1minute, and then verify that the
failure happens again.
1. Make sure that all interlock switches work properly: when door is open,
microwave light is on; when dooris closed, microwave light is off.
2. Unplug oven or disconnect power.
3. Check the following on the Microwave ApplianceManager:
a. Relay 4903
20A
BR
Primary
Interlock
1
4
Microwave Relay
4903
BU
Inverter
CN702
4. If the door works properly and all connections areokay, replace the
Magnetron.
5. Reassemble all parts and panels before operating.
6. Plug in oven or reconnect power.
7. 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 1minute to
check if the error appears. If error remains, then go to Step 8. If not, go to
Step 16.
8. Unplug oven or disconnect power and replace theInverter Board.
9. Reassemble all parts and panels before operating.
10. Plug in oven or reconnect power.
11. 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 1minute to
check if the error appears. If error remains, then go to Step 12. If not, go
to Step 16.
12. Unplug oven or disconnect power.
13. Replace the Microwave ACU.
14. Reassemble all parts and panels before operating.
11
15. Plug in oven or reconnect power.
FOR SERVICE TECHNICIAN’S USE ONLY
16. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear thehistory.
FAILURE ERROR LIKELY FAILURE CONDITION
F2
Keypad
E0 Keypad disconnected
E1 Stuck/Shorted keypad
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode and selecting “Error Diagnostics.”
1. Unplug oven or disconnect power.
2. Check that connectors J4, J5, J6, and J7 are rmly connected. If they are
not, go to Step 3. If they are, go to Step 6.
Speaker
21
BK
J8
RD
User Interface
HMI Left
J4J6
J15
1 2 3 4
J7J5
HMI Right
Control Panel Assembly
3. Reconnect any loose connectors.
4. Reassemble all parts and panels before operating.
5. 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.
6. Replace the Control Panel Assembly.
7. Reassemble all parts and panels before operating.
8. Follow the on-screen prompts to select the model number.
9. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear the history. If the Control Panel Assembly was
replaced, there is no need to clear the error history.
12
FAILURE ERROR LIKELY FAILURE CONDITION
T
V
Meat Probe
F3
Sensors
E0 Main oven sensor openorshorted
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode 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 1000 Ω to
1200 Ω at77°F (25°C). Check sensor for short to ground. If checks on
sensor are not correct, replace sensor andrepeat the checks.
Oven
emperature
Sensor
1
V
2
3
4
Copernicus
5
6
Appliance Manager
7
8
9
10
P3
3. Reassemble all parts and panels and plug in oven orreconnect power.
4. Enter Diagnostics mode 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 not, unplug oven or disconnect
power.
NOTE: On the status screen, the unit of measurement is Celsius.
5. Replace the Copernicus Appliance Manager board.
6. Reassemble all parts and panels before operating.
7. Plug in oven or reconnect power.
8. Verify operation is normal. Enter Diagnostics mode, select “Error
Diagnostics,” and clear the history.
FAILURE ERROR LIKELY FAILURE CONDITION
F3
Sensors
E3
Meat probe connector jack ormeat probe
shorted
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode and selecting “Error Diagnostics.”
1. Unplug oven or disconnect power.
2. Remove meat probe if connected.
3. Disconnect connector P3 from Copernicus ApplianceManager.
1
2
3
4
5
6
7
8
9
10
P3
Copernicus
Appliance Manager
Sensor
OR
GN
4. Check connector jack resistance between P3-3 and P3-4. If it is 0 Ω,
change the jack assembly, and then go to Step 5.
If it is not 0 Ω, the jack assembly is working properly. Go to Step 5.
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 50 KΩ. If they are correct, replace the
Copernicus Appliance Manager.
6. Reassemble all parts and panels before operating.
7. Plug in oven or reconnect power.
8. Verify operation is normal. Enter Diagnostics mode, select “Error
Diagnostics,” and clear the history. Check the meat probe reading by
entering Diagnostics mode and selecting “Sensors & Switches.” The meat
probe should detect the ambient temperature.
13
FOR SERVICE TECHNICIAN’S USE ONLY
Ca
Ther
Microwave
Magnetron
Ther
FAILURE ERROR LIKELY FAILURE CONDITION
F4 E1 Microwave cavity temperaturesensor error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and power on). After powering on, be sure that a load, such as a
microwave-safe 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 1minute, 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
rmly connected. If it is, go to Step 3. If it is not, reconnect and go to
Step 5.
P22
Appliance
Manager
vity
mistor
FAILURE ERROR LIKELY FAILURE CONDITION
F4 E2 Magnetron temperature sensorerror
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and power on). After powering on, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity, and
start a microwave cooking function. Wait 1minute, 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
rmly connected. If it is, go to Step 3. If it is not, reconnect and go to
Step 5.
Microwave
Appliance
mistor
Manager
P21
3. Disconnect connector P22 from the Microwave Appliance Manager, and
measure the resistance of the thermistor. It should be (approximately)
230kΩ at77°F ± 10°F (25°C ± 10°C).
4. 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.
5. Reassemble all parts and panels before operating.
6. Plug in oven or reconnect power.
7. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear the history.
3. Disconnect connector P21 from the Microwave Appliance Manager, and
measure the resistance of the thermistor. It should be (approximately)
10kΩ at77°F ± 10°F (25°C ± 10°C).
4. 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.
5. Reassemble all parts and panels before operating.
6. Plug in oven or reconnect power.
7. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear the history.
14
FAILURE ERROR LIKELY FAILURE CONDITION
Humidity
Sensor
1600
F4 Inputs E4 Microwave oven humiditysensor error
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and power on). After powering on, be sure that a load, such as a
microwave-safe 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 1minute, 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
rmly connected. If it is, go toStep 3. If it is not, reconnect and go to
Step 5.
Microwave
Appliance
Manager
P23
3. Disconnect connector P23 from Microwave Appliance Manager and
measure the resistance ofthe sensor:
Between pins 3 and 1. It should be approximately 2800 Ω at 77°F ± 10°F
(25°C ± 10°C).
Between pins 3 and 2. It should be approximately 2800 Ω at 77°F ± 10°F
(25°C ± 10°C).
4. 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.
5. Reassemble all parts and panels before operating.
6. Plug in oven or reconnect power.
7. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear the history.
FAILURE ERROR LIKELY FAILURE CONDITION
F4 E8 Inverter over temperature
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and power on). After powering on, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity, and
start a microwave cooking function. Wait 1minute, 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
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. Otherwise, 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.
15
FOR SERVICE TECHNICIAN’S USE ONLY
Door Switch
FAILURE ERROR LIKELY FAILURE CONDITION
F4 E9 Inverter and magnetron overtemperature
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven (power off, wait 10
seconds, and power on). After powering on, be sure that a load, such as a
microwave-safe cup of water, is present in the microwave oven cavity, and
start a microwave cooking function. Wait 1minute, 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
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. Otherwise, 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.
FAILURE ERROR LIKELY FAILURE CONDITION
F5 Inputs E0 Door and latch switch donotagree
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode 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.
1
2
3
4
5
6
7
Copernicus
8
9
Appliance Manager
BU
Motor Latch Switch
TN
BR
OR/BK
10
P3
3. Disconnect J8 connector from Copernicus Appliance Manager.
16
4. Measure the resistance between connectors J8-2 and P5-1. It should be
Appliance Manager
N
Door Switch
500 Ω to 3000 Ω at 77°F (25°C).
WH
Copernicus
YL
1
2
3
4
5
6
7
P5
1
WH
2
J8
Motor Door Latch
5. If the resistance check is outside the range, replace the affected door
latch assembly. Verify that the error is gone.
6. Reassemble all parts and panels.
7. Plug in oven or reconnect power.
8. Enter the Diagnostics menu and select “Component Activation.” Check
the door status on the screen by opening and closing the oven door.
9. If status does not change, unplug the oven or disconnect power.
10. Check for continuity with door open and closed at P3-5 to P3-6. Door
open = innite resistance. Door closed = zero resistance.
11. If continuity check is not correct, replace the door latch assembly. If all
checks were correct, replace Copernicus Appliance Manager.
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.
FAILURE ERROR LIKELY FAILURE CONDITION
F5 Inputs E1 Latch not operating
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode 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 ordisconnect power and
check for loose harness connection between motor latch switch and P3-5
andP3-7.
1
2
3
4
5
6
7
Copernicus
8
9
Appliance Manager
BU
Motor Latch Switch
TN
BR
OR/BK
10
P3
3. Disconnect connector J8 from Copernicus ApplianceManager.
17
4. Measure the resistance between connectors J8-2 and P5-1. It should be
Appliance Manager
N
NL
FOR SERVICE TECHNICIAN’S USE ONLY
500 Ω to 3000 Ω at 77°F (25°C).
YL
1
Copernicus
2
3
4
5
6
7
P5
1
WH
2
J8
Motor Door Latch
5. 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.
6. Reassemble all parts and panels before operating.
7. Plug in oven or reconnect power.
8. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear the history.
WH
FAILURE ERROR LIKELY FAILURE CONDITION
F6
E0 Oven user interface - lostcommunication
E6 Oven appliance manager - lostcommunication
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode 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
2L1
J4J6
J15
1 2 3 4
OR
CONN2
CONN7
WH
BK
6
2
5
4
SMPS
1
3
2
14V DC
1
15 W
YL
YL
BU
BR
J7J5
Control Panel Assembly
OR
P1
123 4 5
Oven Appliance
Manager
HMI Right
User Interface
5. Reassemble all parts and panels before operating.
6. Plug in oven or reconnect power.
7. If the error appears again, unplug oven or disconnectpower.
8. Replace the 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 Diagnostics mode, select “Error
Diagnostics,” and clear the history.
18
FAILURE ERROR LIKELY FAILURE CONDITION
RD/WH
NL2L1
T
V
F6 E1 Over temperature
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode and selecting “Error Diagnostics.”
1. Unplug oven or disconnect power.
2. Check for elements shorted to ground. Checkresistance of elements:
a. PX4-2 and PX3-2 to check Broil element (13.2 Ωto 14.6 Ω)
b. PX1-1 and PX3-2 to check Bake element (19 Ωto21 Ω)
c. PX1-3 and PX3-2 to check Upper Convect element (15.2 Ω to 17.3 Ω)
3. If any element is shorted to ground, replace theelement.
4. Check for shorted relays.
For Core Models: Disconnect PX1 and PX4 connectors
andcheckforshorts 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)
8. Check sensor for short to ground. If checks on sensor are not correct,
replace the sensor and repeat the checks.
Oven
emperature
Sensor
1
V
2
3
4
Copernicus
5
6
Appliance Manager
7
8
9
10
P3
9. Reassemble all parts and panels before operating.
10. Plug in oven or reconnect power.
11. Enter the Diagnostics 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 measurementis Celsius.
12. Reassemble all parts and panels before operating.
13. Plug in oven or reconnect power.
14. Verify operation is normal. Enter Diagnostics mode, select “Error
Diagnostics,” and clear the history.
Copernicus Appliance Manager
K11
K10
K2
K3
BU
Broil - 4000W
1
BU
2
PX4
PX1
PX3
Bake - 2800W
RD
1
2
3
YL
4
Convect - 3200W
RD RD
1
2
Temperature Limiter
Oven Temp 338°F (170°C)
BU
RD
BK
YL
BK
5. If there is a shorted relay, replace the Copernicus Appliance Manager
control. Go to Step 9.
6. If everything is correct, disconnect connector P3 from the Copernicus
Appliance Manager.
7. Measure the resistance of the oven sensor. It should be 1000 Ω to1200 Ω
at 77°F (25°C).
19
FOR SERVICE TECHNICIAN’S USE ONLY
FAILURE ERROR LIKELY FAILURE CONDITION
F6 E4
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode and selecting “Error Diagnostics.”
NOTE: If other error codes are stored, troubleshoot those other error codes
rst.
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
on-screen prompts for model selection.
10. Verify operation is normal. If operation is normal, goto 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.
User interface/Appliance manager state status
mismatch
FAILURE ERROR LIKELY FAILURE CONDITION
F6 E8
Lost communications with microwave oven
appliance manager
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode 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 Oven User Interface Board J15-2 (yellow)
and J15-3 (orange) and Microwave Appliance Manager P26-3 (orange)
andP26-4 (yellow).
User Interface
Wide/Power Nav
1
432
J15
YL
OR
YL
OR
21
543
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.
20
11. Follow the on-screen prompts to select the modelnumber if the UI was
replaced.
12. Verify operation is normal. Enter the Diagnostics menu, select “Error
Diagnostics,” and clear the history.
FAILURE
(Left-most 2
Clock digits)
F8
LOW FAN SPEED MESSAGE ON SINGLE/DOUBLE: The product
isexperiencing a problem and can no longer be used.
SUGGESTED CORRECTIVE ACTION PROCEDURE
1. Unplug oven or disconnect power.
2. Wait for at least 30 seconds.
3. Plug in oven or reconnect power.
4. Enter Diagnostics mode and navigate to the Component Activation list.
5. Turn on the Cooling Fan Low Speed.
6. Check for proper voltage input at P5-5 and neutral for high speed fan,
P5-4 and neutral for low speed fan when cooling fan should be running
by completing following steps.
7. Unplug oven or disconnect power.
8. Connect voltage measurement equipment.
9. Plug in oven or reconnect power. Measure voltage and conrm voltage
reading is 120 V. If it is not, unplug oven or disconnect power and go to
Step 13. If it is, go to Step 10.
10. Check for proper voltage input at P4-1 and P4-2 and conrm voltage
reading is 5 VDC. If it is not, unplug oven or disconnect power and go to
Step 13. If it is, go to Step 11.
11. Unplug oven or disconnect power.
12. Replace cooling fan. Go to Step 15.
13. Check integrity of all harness wires and connections between the oven
appliance manager and the cooling fan.
Ensure no shorted wires to chassis.
If the wiring is pinched or damaged, replace the cooling fan harness. Go
to Step 15.
If the wiring is good, go to Step 14.
14. Replace oven appliance manager. Go to Step 15
ERROR
(Right-most 2
Clock digits)
E0 Product not wired correctly
E1 Low fan speed overspeed
E2 High fan speed underspeed
E3 High fan speed overspeed
LIKELY FAILURE CONDITION
21
15. Replace all parts and panels before operating.
FOR SERVICE TECHNICIAN’S USE ONLY
16. Plug in oven or reconnect power.
17. Enter into Diagnostics mode and verify that fan speed is running within
oven. (High speed: 1000-3300, Low speed: 400-3000)
Once Fan Speed is completed, navigate back to the activation list and
activate the Cooling Fan High Speed and return to “More Information” screen
for fan speed.
Hall Effect
Sensor
(Cooling Fan)
YL
P1
GN GN
P2
GY GY
P3
3
2
YL
1
P4
Copernicus
Appliance
Manager
K4
K6
K7
K8
YL
1
2
3
4
5
6
7
P5
GY/BK
OR
GY
Motor Door Latch
Convect Fan
LS Cooling Fan
HS Cooling Fan
FAILURE ERROR LIKELY FAILURE CONDITION
F9 E0 Product not wired correctly
SUGGESTED CORRECTIVE ACTION PROCEDURE
NOTE: Before starting any test, cycle power to the oven(power off, wait 10
seconds, and power on).
PROCEDURE: Before proceeding, verify the error codeby entering the
Diagnostics mode 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 ifthe neutral connection
is switched with L1 or L2(refer to the installation instructions for
productwiring).
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
Diagnostics mode, select “Error Diagnostics,” and clear the history.
22
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