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Model reference

LG GR-L21AUSJH

Refrigerator

4 documents10 error codes14 service modes

Available documentation

Service Manual

  • Refrigerator Service Manual52 pg
    Covers this model
  • Refrigerator Service Manual52 pg
    Covers this model
  • Refrigerator Service Manual52 pg
    Covers this model
  • Refrigerator Service Manual52 pg
    Covers this model
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Diagnose your LG GR-L21AUSJH.

  • Step-by-step diagnostics from the service manual
  • Test values, resistance specs, and wiring references
  • Verified part numbers when replacement is needed
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Error codes (10)

CodeMeaning
Er CFAbnormality of BLDC fan motor for mechanic room (condenser)Er COCommunication error between micom of Main PCB and Display micom.Er dHPoor defrostingEr dSDefrosting sensor error due to short or disconnection of defrosting sensor.Er FFAbnormality of BLDC fan motor for freezerEr FSFreezer sensor error due to short or disconnection of freezer sensor.Er IFAbnormality of BLDC fan motor for ice makingEr ISIcing sensor error due to short or disconnection of icing sensor.Er rSRefrigerator sensor error due to short or disconnection of refrigerator sensor.Er rtRoom temperature sensor error (displayed when ICE PLUS key and Freezer Temp key…

Service modes (14)

  • Display Mode (Showroom/Demo)With the refrigerator door open, press and hold the Refrigerator Temp button and ICE PLUS button…
  • Ice Maker Test ModePress and hold the Fill Key on the ice maker for 3 seconds. The icemaker will run through 3 stages
  • Icemaker Test ModePress and hold the Fill Key for 3 seconds.
  • LED Check FunctionSimultaneously press Ice Plus button and freezing temperature adjustment button for one second.
  • RESETPush test button one time while in TEST3 mode.
  • RESET (from test mode)Push the test button one time while in TEST MODE 3.
  • 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 (Forced Cooling)Push the test button on the main PCB controller one time.
  • TEST MODE 2 (Damper Close Test)Push the test button one time while in TEST MODE 1.
  • TEST MODE 3 (Forced Defrost)Push the test button one time while in TEST MODE 2.
  • TEST1 (Forced Cooling)Push test button one time at main PCB controller.
  • TEST2 (Damper Close Test)Push test button one time while in TEST1 mode.
  • TEST2 (Damper Close)Push the test button one time while in TEST1 mode.
  • TEST3 (Forced Defrosting)Push test button one time while in TEST2 mode.

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

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