CH44
LG
Indoor-Outdoor Option or Capacity Mismatch
System shows CH44 and may not respond to remote commands.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Indoor and outdoor units of incompatible capacities or series, Incorrect option code settings on PCB, Mixed multi-split components not supported by LG
How to Fix / Troubleshooting
Safety: Turn off power before inspecting PCBs.
Steps:
- Verify model compatibility: Check that the indoor and outdoor model numbers are listed as compatible in LG documentation.
- Check option codes: Some systems require setting option codes via dip switches or service remote. Ensure these match the installed combination.
- Power reset: After corrections, power off for 10 minutes, then on, and test.
Technician involvement: If CH44 remains, consult an LG-trained technician to verify system design and reconfigure or replace mismatched components.
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Repair Difficulty
Hard
4/5
Required Part
Indoor Control PCB
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