Error code reference
Whirlpool Oven Error Code F4E9
Inverter and magnetron over temperature.
Inverter and magnetron over temperature.
First step from the service manual
1
Cycle power, place load in microwave, start cooking function, wait 1 minute. Check cooling fan connection and installation for air blockage. Verify cooling fan is running. If fan stalled, replace fan. If fan runs, replace Magnetron and inverter board.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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F4E9 on my Whirlpool Oven
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Inverter and magnetron over temperature
From Tech Sheet W11941216, p.28:
1.Cycle power, place load in microwave, start cooking function, wait 1 minute. Check cooling fan connection and installation for air blockage. Verify cooling fan is running. If fan stalled, replace fan. If fan runs, replace Magnetron and inverter board.
2.Measure door lock assembly resistance across the PTC terminals. Expected: ~200 ohms cold, rising sharply once energized.
3.Inspect strike and latch alignment. A warped door or misaligned strike prevents the switch stack from closing in the correct sequence.
Part W10810403
Door lock assembly
Related Whirlpool oven codes
All Whirlpool oven codes →- 11Oven sensor opened (upper oven).
- 12Oven sensor shorted (upper oven).
- 1CShorted key detected on keypad.
- 1dDoor and switches do not agree
- 21Oven sensor opened (lower oven).
- 22Oven sensor shorted (lower oven).
- 2CKeytail unplugged
- 31EEPROM communications error (internal control error).
View all 187 Whirlpool oven codes
- 32EEPROM communications error (internal control error).
- 3dDoor and switches do not agree
- 4dDoor latch not operating properly.
- 51BAKE/BROIL range over temperature condition.
- 52CLEAN range over temperature condition.
- 6CEEPROM communications error (internal control error).
- 7CEEPROM communications error (internal control error).
- 8CEEPROM communications error (internal control error).
- 9dLatch error during CLEAN cycle.
- C-81Induction cooktop over temperature (Type 2 failure).
- C-82Induction cooktop over temperature (Type 2 failure).
- C-83Induction cooktop temperature sensor stuck (Type 2 failure).
- E0Key held down too long or key is shorted (under F2).
- E0 E5 E7 E9Internal board failure (F1).
- E0 F0No failure (GOOD)
- E0 F1EEPROM communication error (internal control failure).
- E0 F2Keypad disconnected from control.
- E0 F3Main oven temperature sensor open or shorted (upper cavity).
- E0 F5Door and latch switches do not agree during Clean mode.
- E0 F6Lost communications between user interface and appliance…
- E0 F9Range is mis-wired (incorrect power supply wiring).
- E1Oven temperature sensor open or shorted (upper or lower…
- E1 E5Oven user interface failure.
- E1 F1Check oven appliance manager
- E1 F2Stuck or shorted key on keypad.
- E1 F3Main oven temperature sensor open or shorted (lower cavity).
- E1 F5Door latch not operating during Clean mode.
- E1 F6Over temperature condition during cook mode (runaway…
- E2Oven temperature too high or runaway oven condition.
- E2 F1Lower RTD uncalibrated (internal control failure).
- E2 F2Stuck key detected on keypad.
- E2 F3Warming drawer sensor shorted or open (oven not equipped…
- E2 F6Over temperature condition during clean mode (runaway…
- E3Wiring harness cavity size select jumpers indicate a cavity…
- E3 F3Meat probe shorted.
- E3 F6Mini oven/warm drawer over temperature (oven not equipped…
- E4Door latch unlock failure
- E4 F6User interface / appliance manager mismatch.
- E5Control board failure
- E5 F1Sensor usage out of range (internal control failure).
- E5 F6No cavity size command programmed in control.
- E6CANCEL key drive line open (under F2).
- E7Self clean latch will not unlock.
- E7 F1PCB thermistor/sensor open or shorted.
- E9 F1WIDE Queue full (internal communication buffer overflow).
- EEPROMEEPROM communication error.
- F-12Induction cooktop coil under current (Type 1 failure…
- F-21Induction cooktop supply power frequency error (Type 2…
- F-25Stuck fan on Induction Power System (IPS)
- F-36Stuck fan on Induction Power System (IPS) (right or left…
- F-37Stuck fan on Induction Power System (IPS) (right or left…
- F-40Induction Power System (IPS) failure (Type 1 or Type 2).
- F-42Induction cooktop power supply issue (Type 2 failure).
- F-43Induction cooktop under voltage (Type 2 failure).
- F-47Power supply from Induction Power Control (IPC) to User…
- F-56Wrong or invalid configuration (Type 3 failure, disables…
- F-58Wrong or invalid configuration on the Induction Power…
- F-60UI does not work (Type 3 failure, disables entire cooktop).
- F0Default F code
- F0-E0Default F code
- F0-E3Wiring harness cavity size does not match previously stored…
- F01Temperature probe failure
- F02Welded (stuck closed) element relays detected on the…
- F03A.M
- F04WISP protocol doesn't work (communication error between…
- F05Door or latch problems (door latch assembly, motor, or…
- F06Door closure failure
- F07Gemini/Capricorn failure (short circuit)
- F08UI EEPROM failure (TAD models).
- F09Communication failure between G2SMART and Antares (TAD…
- F1Control failure series: potential runaway oven condition…
- F1 E3Configuration jumper change; freestand, electric switches…
- F1 E8Improper keypad feedback (power board supply lift).
- F1-E4Electronic control malfunction (E4 variant).
- F1-E6Electronic control malfunction (all E codes under F1…
- F1-E7 (cooktop)PCB thermistor/sensor open or shorted on the cooktop…
- F1-E9 (cooktop)WIDE queue full on the cooktop control.
- F10Primary grill heating element failure (Pyro models only).
- F11Communication failure between G2SMART and TEX (TAD models).
- F1E0User Interface Board EEPROM Communication Error
- F1E0 (cooktop)EEPROM communication error on cooktop (EGO) control.
- F1E1Control Relay Board EEPROM Communication Error
- F1E2Lower RTD Uncalibrated
- F1E5Sensor Usage Out of Range
- F1E7PCB Thermistor Open or Shorted
- F1E9WIDE Queue Full
- F1EAMain ACU over temperature condition.
- F1EBControl panel not working/Control panel not accepting…
- F2Default F code
- F2 E3Key held down too long or keyboard short or spill on switch…
- F2 E5Cancel key drive line open.
- F2-E1 (cooktop)Stuck key detected on the cooktop control keypad.
- F2E0Keypad Disconnected
- F2E1Stuck Key
- F2E2Cancel or Off Key Error/Warming Zone Off Keypad Error
- F2E4Temperature Too Low (cooking times too long, not getting…
- F2E6Keypad error (microwave generation related).
- F3Oven sensor open circuit, oven sensor short circuit…
- F3 EOOven sensor open or shorted (humidity sensor 1600).
- F3-E4Bottom oven temperature sensor open (bottom oven sensor…
- F3-E5Bottom oven temperature sensor shorted (bottom oven sensor…
- F3-E7Warming drawer temperature sensor shorted.
- F3E0Main Sensor Open or Shorted (Upper)
- F3E1Main Sensor Open or Shorted (Lower)
- F3E2Warming drawer sensor short-circuited (not applicable to…
- F3E3Main Oven Meat Probe Short-Circuit
- F3E6Powered Accessory (PA) over temperature.
- F3E8Main oven Powered Accessory (PA) mismatch.
- F3E9Left Oven Meat Probe Short-Circuit
- F4Temperature sensor opened or temperature sensor shorted…
- F4 E2Over temperature during cook mode (temperature runaway).
- F4 E3Over temperature during clean mode (temperature runaway).
- F4 E7Over temperature cavity 2 (temperature runaway error).
- F4-E0Door is open but latch is locked (door switch indicates…
- F4E1Microwave Oven Magnetron Thermistor Open or Shorted
- F4E4Microwave Oven Humidity Sensor Open or Shorted
- F4E8Inverter over temperature.
- F5Door and latch switch mismatch during clean mode, or door…
- F5 E6Lower door switch reads constant high.
- F5 E7Door unlocked but will not unlatch after clean cycle.
- F5 EODoor and latch switch do not agree.
- F5-E5Self clean temperature (288°C [550°F]) not reached within…
- F5E0Door and Latch Switches Do Not Agree
- F5E1Latch Not Operating
- F5E2CLEAN range over temperature, or door and door position…
- F5E3Left Oven Door Latch Switch
- F5E3 (Inputs)Door and latch switch do not agree (lower oven).
- F5E4Left Oven Door Latch Motor
- F6Switch pulse return line not connected
- F6 E0 (cooktop)Right cooktop communication error.
- F6 E1 (over temp)Over temperature during cooking.
- F6 E4 (cooktop)Left cooktop communication error.
- F6 E7Lost communication with MWO appliance manager.
- F6 E8Lost communications with Microwave Oven Appliance Manager.
- F6 EAUser interface over temperature.
- F6 EBDouble lower oven
- F6E0User Interface Connection
- F6E1Over Temp Cook
- F6E2Over Temp Clean
- F6E3Left Oven Over Temperature Limit
- F6E4Control Status
- F6E5Mini oven/warm drawer over temperature (oven not equipped…
- F6E5 (cooktop)Oven control communication error (from cooktop control…
- F6E6Main Oven Control Connection
- F6E9Left Oven Control Connection
- F7Common wire (+5VDC) to latch switch and door switch is…
- F7-E0Boiler
- F7-E3Incorrect filter reset.
- F7-E4Conductivity sensor not connected.
- F7E1Boiler Over Temperature Limit (steam models)
- F7E2Boiler Temperature Out of Range (for steam models)
- F7E5Main cooling fan error
- F7E6Microwave Inverter and Magnetron fault.
- F8Defective electronic oven control
- F8-E4Oven over temperature while door close and latch unlock.
- F8-E6Left fan at high speed
- F8E0Cooling Fan Speed Too Low
- F8E1Left Oven Cooling Fan Speed Low
- F8E2Cooling Fan Speed Too High
- F8E3Left Oven Cooling Fan Speed High
- F9Door motor mechanism failure (F90 to F94)
- F9E0Error code listed in error code table (specific description…
- F9E4User interface/Appliance manager state status mismatch.
- FBE1Main Door Latch motor has failed to lock/unlock.
- FCE1Secondary Door and Latch Switches Do Not Agree (Lower Oven).
- FCE2Model/Serial Numbers Do Not Match.
- FCE3Common Failure Between Main ACU and HMI.
- FEE6Main Cavity Bake Element open circuit.
- FEE7Main Cavity Broil Element open circuit.
- FEE8Main Cavity Convect 1 Element open circuit.
- FEE9Main Cavity Convect 2 Element open circuit.
- FEEAMain Cavity Convect 2 Element open circuit.
- FEEBSecondary Cavity Broil Element open circuit.
- FEECConvection element open circuit.
- FEEDSecondary Cavity Convect 2 Element open circuit.
- Microwave Oven Inverter ErrorMicrowave oven inverter error
- No DisplayControl is blank
- PFPower failure indication (not a failure mode).
- SABOven is in Sabbath Mode.
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