Error code reference

LG Air Conditioner Error Code E311

Error on temperature sensor of double layer pipe/liquid pipe (sub heat exchanger) (Short or Open).

SourceLG System Air Conditioner Outdoor Unit - Full Service Manual (AM100/120/140/160 Series)p. 4-9, 4-32

Diagnostic procedure

The full E311 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 if liquid pipe temperature sensor connector broke away from PCB.

SourceLG System Air Conditioner Outdoor Unit - Full Service Manual (AM100/120/140/160 Series)p. 4-9, 4-32

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

2 manuals in the MyPros+ library document this code for LG air conditioner.

Models covered by the manuals that document this code

More models are covered than are listed here.

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