Error code reference

LG HVAC Error Code 49

13 SEER Split/Multi Split: Outdoor unit discharge and air sensor both unplugged.

SourceLG Ductless HVAC & PTAC - Tech Sheet: Error Codes & Wiring

Diagnostic procedure

The full 49 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

Verify AC voltage to ODU is 193-253V AC. If OK check fuses; if fuses OK, replace outdoor main PCB.

SourceLG Ductless HVAC & PTAC - Tech Sheet: Error Codes & Wiring

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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

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

Models covered by the manuals that document this code

More models are covered than are listed here.

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The full 49 procedure

Where this code is documented

Models covered by the manuals that document this code

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