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Error code reference
LG Refrigerator Error Code R0 R1 R2 ON, R3 R4 OFF
Defrost operation failure: defrost heater wires are cut or disconnected.
SourceLG Refrigerator - Full Service Manual: GM-R50/R60TYVPp. 24-25
Diagnostic procedure
The full R0 R1 R2 ON, R3 R4 OFF 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 defrost heater wiring and connections.
SourceLG Refrigerator - Full Service Manual: GM-R50/R60TYVPp. 24-25
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
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