Error code reference

LG Refrigerator Error Code F4

Trouble code indicated on the freezing temperature indicator LED in the refrigerator display (specific fault condition per trouble code index).

SourceLG Refrigerator - Full Service Manual: GR-L196TLQA.CPLQGSF28 (MICOM FUNCTION)

Diagnostic procedure

The full F4 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check trouble diagnosis function; function control buttons will not work but recognition sound is heard. Returns to normal when trouble code LED is off (reset).

SourceLG Refrigerator - Full Service Manual: GR-L196TLQA.CPLQGSF28 (MICOM FUNCTION)

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented

17 manuals in the MyPros+ library document this code for LG refrigerator.

Models covered by the manuals that document this code

More models are covered than are listed here.

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