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Error code reference
LG Air Conditioner Error Code CH45
Condenser pipe temperature sensor error (open/short) - sensed condenser temperature too high.
SourceLG Air Conditioner - Tech Sheet: LP-Y Series Specifications
Diagnostic procedure
The full CH45 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 assembly status of sensor connector; reassemble sensor after removal; check location of disconnection/bad canning sheath/short; measure sensor resistance.
SourceLG Wall Mounted Air Conditioner - Service Manual: General Inverter Typep. 28, 71
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
3 manuals in the MyPros+ library document this code for LG air conditioner.
Models covered by the manuals that document this code
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