Error code reference

LG Refrigerator Error Code F2+F4

Poor defrosting at upper compartment - defrosting sensor did not reach above 7°C (16°C for GR-J213) within 2 hours after starting defrost.

SourceLG Refrigerator - Full Service Manual: GR-J Series (GR-J213/J303/J323/J403/J408)p. 14-15

Diagnostic procedure

The full F2+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 temperature fuse, heater continuity, drain for clogging, and heater driving relay.

SourceLG Refrigerator - Full Service Manual: GR-J Series (GR-J213/J303/J323/J403/J408)p. 14-15

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

1 manual in the MyPros+ library documents this code for LG refrigerator.

Models covered by the manuals that document this code

75,000+ service documents · 20,000+ error codes · 100+ brands

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