Error code reference

LG Refrigerator Error Code rt

Abnormal Room Temperature Sensor-wire open, short circuit, temperature sensor damaged, or Main PCB damaged (secondary error).

SourceLG LFC20770/LFC20786 Refrigerator - Service Manualp. 34-43

LG codes LG refrigerator codes

Diagnostic procedure

The full rt 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

First diagnostic step

Check for loose connection in CON8; check resistance value between brown to brown wires (expected 7.0-30 kΩ).

SourceLG LFC20770/LFC20786 Refrigerator - Service Manualp. 34-43

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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

14 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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The full rt procedure

Where this code is documented

Models covered by the manuals that document this code

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