H5 is displayed and the unit will not run; sometimes accompanied by E5 or other inverter-related codes.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: This is a serious electrical fault. Do not attempt to test the inverter or compressor yourself.
User actions:
- Power cycle: Turn off power for 10–15 minutes and then restore. If H5 returns immediately, leave the unit off.
- Visual inspection: With power off, a technician can inspect the outdoor PCB for burn marks and the compressor terminals for damage.
Resolution: Requires professional diagnosis. Likely replacement of the outdoor inverter PCB and possibly the compressor.
Repair Difficulty
Required Part
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