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Error code reference
LG Heat Pump Error Code CH26
Problem in DC Compressor positioning (position detect error).
SourceLG AH Series Heat Pump - Service Manualp. 61, 72
Diagnostic procedure
The full CH26 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 compressor U,V,W wire connections; check IPM and detection circuit components; check compressor coil resistance.
SourceLG AH Series Heat Pump - Service Manualp. 61, 72
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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