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Model reference

LG GR-M931

Refrigerator

1 document14 error codes10 service modes

Available documentation

Service Manual

  • Refrigerator Service Manual80 pg
    Covers this model
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Error codes (14)

CodeMeaning
Er CFAbnormality of BLDC fan motor for machine room (condenser fan)Er COCommunication error between Micom of Main PCB and Display MicomEr dHPoor defrostingEr dSDefrosting sensor error caused by short or disconnection of the defrosting…Er FFAbnormality of BLDC fan motor for freezerEr FSFreezer sensor error caused by short or disconnection of the freezer sensor.Er gFFlow meter (sensor) defectEr IFAbnormality of BLDC fan motor for ice makingEr ISIcing sensor error caused by short or disconnection of the ice maker sensor…Er ItIce maker kit defectEr rFAbnormality of BLDC fan motor for refrigeratorEr rSRefrigerator sensor error caused by short or disconnection of the refrigerator…Er rtRoom temperature sensor error caused by short or disconnection of the room…Er SSPantry sensor error caused by short or disconnection of the pantry sensor.

Service modes (10)

  • Display Check FunctionSimultaneously press Ultra Ice button and Freezing Temperature adjustment button for a second…
  • Display Mode (showroom/demo mode)With the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
  • Error Code Check (within 3 hours of initial error)Press the Ice Plus button and Freezer button simultaneously.
  • Ice-detecting Sensor Diagnosis Mode1
  • Icemaker Test ModePress and hold the FILL key on the icemaker unit for about 3 seconds.
  • Power Save Mode TogglePress the ICE PLUS Button and Freezer TEMP button simultaneously for more than 5 seconds.
  • Temperature Display Toggle (°F / °C)Press and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
  • Test Mode 1 - Compressor / Damper / All FAN onPush the test button on the Main PCB 1 time
  • Test Mode 2 - Damper closedPush the test button on the Main PCB 2 times
  • Test Mode 3 - Forced defrost modePush the test button on the Main PCB 3 times

Full entry steps, exit procedures, and test sequences are available in Max.

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