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Model reference

LG LFX31945ST/00

Refrigerator

2 documents17 error codes17 service modes

Available documentation

Service Manual

  • Refrigerator Service Manual95 pg
    Covers this model
  • Refrigerator Service Manual95 pg
    Covers this model
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Error codes (17)

CodeMeaning
Er CFCondenser fan errorEr COCommunication error between MICOM of Main PCB and Display MICOM, or abnormality…Er dHPoor defrostingEr 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 rFRefrigerator fan errorEr 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.F dHFreezer defrosting errorF dSFreezer defrost sensor error caused by short or disconnection of the defrost…r dHRefrigerator defrosting errorR dSRefrigerator defrost sensor error caused by short or disconnection of the…

Service modes (17)

  • Display Check FunctionSimultaneously press Ultra Ice button and Freezing Temperature Adjustment button for a second to…
  • Display ModeWith the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
  • Display Mode (Demo Mode)With the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
  • Display Mode (Showroom Mode)With the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
  • Display Mode (Showroom/Demo)With the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
  • Error Code CheckWithin 3 hours after the error
  • Error Code Display (within 3 hours)Press the Ice Plus button and Freezer button simultaneously within 3 hours after the error occurred.
  • Ice-detecting Sensor Diagnosis1
  • Icemaker Test ModePress and hold the FILL key on the icemaker for about 3 seconds. The icemaker will run through 3…
  • Temperature Display Toggle (°F/°C)Press and hold FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
  • Test Mode 1 (Comp / Damper / All FAN on)Push the test button on the Main PCB 1 time
  • Test Mode 1 (Comp/Damper/All Fan On)Push the test button on the Main PCB 1 time
  • Test Mode 1 (Forced Operation)Press the test button on the Main PCB 1 time
  • Test Mode 2 (Damper closed)Push the test button on the Main PCB 2 times
  • Test Mode 3 (Forced defrost mode)Push the test button on the Main PCB 3 times
  • Test Mode 3 (Forced Defrost)Press the test button on the Main PCB 3 times
  • Toggle Display °F / °CPress and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.

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