Indoor unit displays H5 and system will not run.
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 inverter fault. Turn off power and do not attempt internal repairs unless qualified.
User action:
- Power reset: Turn off the outdoor disconnect for 10–15 minutes, then restore power and test.
Professional repair: If H5 returns, an HVAC technician must test the compressor windings and outdoor inverter board. Board and/or compressor replacement is often required.
Repair Difficulty
Required Part
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