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Model reference

LG LSC27921SB04

Refrigerator

1 document12 error codes6 service modes

Available documentation

Service Manual

  • Refrigerator Service Manual93 pg
    Covers this model
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Error codes (12)

CodeMeaning
Er 1Refrigerator sensor (R1) wire cut or short circuit.Er 10Communication error between main PCB and display PCB (continuous information…Er 11Abnormal ice-maker sensorEr 12Abnormal ice-maker unitEr 2Refrigerator sensor (R2) wire cut or short circuit.Er 3Freezing sensor wire cut or short circuit.Er 4Defrost sensor wire cut or short circuit.Er 5Ambient (room temperature) sensor wire cut or short circuit.Er 6Water tank sensor wire cut or short circuit.Er 7Freezer fan motor BLDC locked or faulty (no position signal for more than 115…Er 8Cooling (condenser) fan motor locked or faulty.Er 9Defrost malfunction

Service modes (6)

  • Demonstration Mode (OFF Mode)1) Open any door
  • Display Check Mode (Error Code Display)Press FREEZER and ICE PLUS buttons at the same time for 1 second.
  • Display OFF Mode (Standby)Press FREEZER and ICE PLUS buttons simultaneously
  • Temperature Unit Toggle (°F / °C)Press and hold FREEZER and REFRIGERATOR keys at the same time for over 5 seconds.
  • Test Mode 1 (Forced Cooling / Freezing Force Mode)Press the test button on the main PCB once
  • Test Mode 2 (Compulsory Frost Removal / Forced Defrost Mode)From Test Mode 1, press the test button on the main PCB once more

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

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