Error code reference
Whirlpool Refrigerator Error Code MAIN BOARD + DEFROST SENSOR
Main control board and defrost thermistor sensor have both failed.
Main control board and defrost thermistor sensor have both failed.
First step from the service manual
1
Enter service diagnostics mode to confirm; replace main board and defrost sensor as needed.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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- ✓Step-by-step tests with expected resistance, voltage, and continuity values
- ✓Wiring diagram references and connector pinouts from the OEM service manual
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MAIN BOARD + DEFROST SENSOR on my Whirlpool WRS325SDHZ
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Main control board and defrost thermistor
From Tech Sheet W10018847, p.19:
1.Enter service diagnostics mode to confirm; replace main board and defrost sensor as needed.
2.Disconnect the sensor and measure resistance at the sensor body. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).
3.Check the sensor harness for opens and shorts. Back-probe the sensor pins at the control board connector; a reading outside 5 kΩ to 50 kΩ indicates a failed sensor.
Part WP8577274
Temperature thermistor
Related Whirlpool refrigerator codes
All Whirlpool refrigerator codes →- 0000No error found
- 001Fridge/Cellar compressor failure
- 002TriMode (freezer) compressor failure
- 003Condenser overheating
- 004TriMode defrost heater failure
- 005TriMode fan / air circulation failure
- 006Fridge gas solenoid performance issue
- 007Fresco gas solenoid performance issue
View all 218 Whirlpool refrigerator codes
- 008No water fill
- 01Freezer thermistor is within operating region (normal/pass…
- 012Fresco NTC air probe fault
- 013Fresco NTC evaporator probe fault
- 014Fresco fan / air circulation failure
- 015Ice maker NTC probe fault
- 016Condenser NTC probe fault
- 018Fridge fan / air circulation failure
- 019Fridge NTC air probe fault
- 02Thermistor is within the 'Open' region, indicating an open…
- 020Fridge NTC evaporator probe fault
- 021Fridge magnetic door switch fault
- 022TriMode magnetic door switch fault
- 023TriMode NTC evaporator probe fault
- 024TriMode NTC air probe fault
- 025No PCB communication
- 03Thermistor is within the 'Short' region, indicating a…
- 1RC (Refrigerator Compartment) thermistor failure detected…
- 10The resistance of the PC sensor is outside the normal range…
- 11The current measured for the ambient heater, PC fan and FC…
- 12The current measured for the ambient heater, PC fan and FC…
- 13The low ambient heater is drawing less current than…
- 14The low ambient heater is drawing more current than…
- 15The PC fan is drawing less current than expected; either…
- 16The PC fan is drawing more current than expected; either…
- 17The FC fan is drawing less current than expected; either…
- 18The FC fan is drawing more current than expected; either…
- 2Evaporator thermistor failure detected during service…
- 2 FLASHESInverter status LED indicates no 3-6 VDC signal from the…
- 2 pulsesOptics status LED output
- 2-1Key switch stuck closed for more than 30 seconds.
- 20Flapper heater current low.
- 22The resistance of the PC sensor 2 is outside the normal…
- 23The board is not seeing the ice maker switch cycle during…
- 24The resistance of the ice tray sensor is outside the normal…
- 25The resistance of the ice tray sensor is outside the normal…
- 26Icemaker motor timed out; the icemaker gearbox is not…
- 27Icemaker motor current high.
- 28Icemaker solenoid current high.
- 29Icemaker solenoid current low.
- 3The resistance of all the temperature sensors are outside…
- 3 FLASHESInverter status LED indicates inverter failure.
- 3 pulsesOptics status LED output
- 3-1Fridge evaporator sensor issue.
- 32Solenoid Driver 1 has failed; product has reverted to…
- 33Solenoid Driver 2 has failed; Solenoid Driver 1 may still…
- 34Both Solenoid Drivers 1 and 2 have been detected to have a…
- 4The resistance of all the temperature sensors are outside…
- 4 FLASHESInverter diagnostic LED
- 4 pulsesOptics status LED output
- 4-1Heater failure.
- 5Multiple failures
- 6The resistance of the FC sensor is outside the normal range…
- 7The resistance of the Evaporator sensor is outside the…
- 8The resistance of the Evaporator sensor is outside the…
- 9The resistance of the PC sensor is outside the normal range…
- ALL_LEDS_BLINKMultiple failures detected.
- bFIce bin is full, detected during ice maker self-diagnostics.
- CThermistor failure
- CFCommunication failure between the main control board and…
- CLInner temperature too low (displayed on both compartments…
- Code 1Freezer Door open for more than 6 minutes (LED pattern
- Code 2Refrigerator Door open for more than 6 minutes (LED pattern
- Code 3Freezer Temperature over 0°C (LED pattern
- Code 4Temperature sensor circuit open (LED pattern
- Code 5Bimetal does not open for 3 consecutive defrost cycles (LED…
- Code 6Bimetal opens when not defrosting (LED pattern
- Code 7Bimetal opens too quickly for 3 consecutive defrost cycles…
- dAir door (damper) stuck or open circuit detected.
- D7Main Board failure (heater driver or compressor driver…
- D7+D8Main board failure combined with refrigerator sensor…
- D7+D8+D9Multiple failures including sensors and drivers detected…
- D7+D9Main board failure combined with defrost sensor failure…
- D8RC (refrigerator compartment) sensor failure detected…
- D8+D7RC sensor and defrost sensor both failed during service…
- D8+D9Both refrigerator and defrost sensor failures detected…
- D9Defrost sensor failure detected during Athena control…
- D9 D6Main Control and RC Thermistor failures detected during…
- D9 D7Defrost Thermistor failure detected during service…
- D9 D8RC Thermistor failure detected during service diagnostics.
- D9 D8 D6Main Control and Defrost Thermistor failures detected…
- D9 D8 D7Both RC Thermistor and Defrost Thermistor failures detected…
- D9 D8 D7 D6Multiple failures detected during service diagnostics (Main…
- D9+D7Main board and defrost sensor failure detected during…
- D9+D8Main board and RC sensor failure detected during service…
- D9+D8+D7Multiple failures detected during service diagnostic mode…
- DEFROST SENSORDefrost thermistor sensor failure detected during service…
- E0No errors present on the refrigerator compartment ice maker.
- E1No cooling detected; ice maker stopped because the ice…
- E2Motor lost position
- E3Heater time-out
- E4Dry cycle detected; the appliance detected dry cycles…
- E5Timed ice making
- E6Manufacturing error code
- ErCommunication failure (manufacturing code context).
- F01Lower sensor circuit is open or short.
- F02Upper sensor circuit is open or short.
- F05Defrost sensor circuit is open or short.
- F07TH1 sensor circuit is open or short.
- F10E1Freezer Compartment (FC) Fan failure.
- F10E11Refrigerator Compartment (RC) Damper failure.
- F11Humidity Sensor Open or Shorted
- F1E1ACU (Appliance Control Unit) fault.
- F2DF Sensor (Defrost/Evaporator temperature sensor) failure.
- F27Upper fan abnormal operation.
- F28Condenser Fan Abnormal
- F29Lower fan abnormal operation.
- F30No display signal received (shorted or broken wire).
- F31No display signal received (shorted or broken wire) clock…
- F32Solenoid Driver 1 & 2 (transistor) has failed, or the…
- F33Solenoid Driver 2 (transistor) has failed (Measured Fill…
- F34Both Solenoid Drivers have failed (Measured Fill Products…
- F35Cooling system abnormal operation.
- F38Evaporator Fan Speed Abnormal
- F3E0Refrigerator/main compartment thermistor (Z1) shorted or…
- F3E1Refrigeration Compartment (RC) temperature sensor failure…
- F3E2Freezer Compartment (FC) thermistor failure; triggers…
- F3E3Convertible Compartment (CC) thermistor failure; triggers…
- F3E4Deli compartment (Z2) thermistor short or open circuit…
- F3E5Freezer specialty food drawer thermistor (Z2) open circuit…
- F3E6Refrigerator Compartment or Evaporator In Sensor failure…
- F3E7Convertible compartment evaporator in sensor
- F3E8External RH (humidity) sensor failure (must combine with…
- F3E9Ambient temperature sensor failure; mullion flipper heater…
- F3EBPantry/CC (Convertible Compartment) Temperature Sensor…
- F3ECFlipper mullion thermistor failure.
- F3EDDoor ice box thermistor failure.
- F3EFFreezer evaporator thermistor failure (second thermistor).
- F4FC Sensor (Freezer Compartment temperature sensor) failure.
- F40Icemaker solenoid Transistor 1 short circuit; a transistor…
- F41Icemaker solenoid Transistor 2 short circuit.
- F4E1Freezer Compartment or Main Evaporator Heater failure (Type…
- F4E2Refrigerator Compartment or Evaporator Heater failure (TYPE…
- F4E3Convertible Compartment Evaporator Heater failure.
- F4E8Flipper mullion heater open or short circuit.
- F4E9Dispenser wall heater open or short circuit.
- F4EDPantry damper heater open or short circuit.
- F4EERC damper heater open or short circuit.
- F5RC Sensor (Refrigerator Compartment temperature sensor)…
- F6HMI Damper failure
- F6E1Communication failure between Theseus ACU board and Goddess…
- F6E2Communication failure between ACU and Expansion Board.
- F7E1Sealed system is not working properly (faulty compressor or…
- F8E1Ice box thermistor failure.
- F8E2RC ice maker tray thermistor failure.
- F8E3RC ice maker malfunction.
- F8E8FC ice maker tray thermistor failure.
- F8ECFC ice maker malfunction.
- F9ACU DC Fan failure
- F9E1RC overhead LED fault.
- F9E3FC LED fault.
- F9E4RC Side wall LEDs fault.
- FAE1Refrigeration compartment or main evaporator fan failure.
- FAE11RC (Refrigerator Compartment) air damper fault.
- FAE2Freezer Evaporator Fan failure (TYPE 2).
- FAE6CC damper issue
- FAEBDamper 1 (RC Damper) failure
- FAECDamper 2 (Pantry Damper) failure
- FAEdRC damper issue
- FBE1Ice Box Sensor failure (open/short circuit).
- FBE2Ice Maker Temperature Sensor 1 failure (open/short circuit).
- FBE3RC (in-door) ice maker malfunction.
- FBE8FC ice maker fill tube heater fault.
- FBE9IDI door duct heater fault.
- FBEAIDI ice maker fill tube heater fault.
- FBEBIce Maker Temperature Sensor 2 failure (open/short circuit).
- FBECFC ice maker malfunction.
- FDService Denied
- FDE0Ice maker tray thermistor shorted or open circuit.
- FDE1RC damper duct blocked.
- FDE2Pantry damper duct blocked.
- FDE4RC damper duct not sealed.
- FDE5Pantry damper duct not sealed.
- FDEAIce Maker Jammed (cannot find Homing or end of harvest…
- HIInner temperature too high (displayed on both compartments).
- IBIce maker indicates the ice bin is full during harvest test.
- LED pattern for Defrost Sensor failureDefrost sensor (evaporator thermistor) failure detected.
- LED pattern for Multiple FailuresMore than one failure is detected; the major failure is…
- LED pattern for Power Board failurePower board failure
- LED pattern for RC & Defrost Sensor failureBoth the refrigerator compartment sensor and defrost sensor…
- LED pattern for RC Sensor failureRefrigerator compartment (RC) thermistor sensor failure…
- LED1RC (Refrigerator Compartment) thermistor failure detected…
- LED1 blinkRefrigerator thermistor failure detected during service…
- LED1 blinkingControl board failure
- LED1+LED3Power board failure (heater or compressor driver).
- LED1+LED3 blinkMultiple failures
- LED1+LED3 blinkingMultiple failures
- LED1+LED3+LED4 blinkMultiple failures
- LED1+LED3+LED4 blinkingMultiple failures
- LED2Evaporator thermistor failure detected during service…
- LED2 blinkEvaporator thermistor failure detected during service…
- LED2+LED3Both RC sensor and defrost sensor failure.
- LED3FC (Freezer Compartment) thermistor failure detected during…
- LED3 blinkFreezer thermistor failure detected during service…
- LED3 blinkingEvaporator thermistor failure detected during service…
- LED3+LED4 blinkMultiple failures
- LED3+LED4 blinkingMultiple failures
- LED4 blinkFC thermistor failure.
- LED4 blinkingFC (freezer compartment) thermistor failure detected during…
- LOInner temperature too low (displayed on both compartments…
- MAIN BOARDMain control board failure detected during service…
- MAIN BOARD + RC SENSORMain control board and refrigerator compartment thermistor…
- MULTIPLE FAILURESMore than one failure detected; the major failure is…
- OPOpen circuit detected
- PADoor ice maker self-diagnostics
- POPower outage indicator
- POWER BOARDFailure detected in the power board (heater or compressor…
- RC & DEFROST SENSORBoth the refrigerator compartment and defrost thermistor…
- RC SENSORRefrigerator compartment thermistor sensor failure detected…
- SHShorted thermistor detected on the monitored sensor (fresh…
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