H5 error, unit will not start compressor
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: Inverter circuits carry dangerous voltages even after unplugging. Wait several minutes for capacitors to discharge and do not touch heat sinks or power components unnecessarily.
- Step 1 – Power reset:
- Unplug the unit for at least 15 minutes to allow the inverter to reset.
- Step 2 – Visual inspection:
- Access the main PCB and inspect the inverter section (large heat sink, power transistors).
- Look for burn marks, cracked components, or strong burnt smell.
- Step 3 – Professional diagnosis:
- Because inverter diagnosis requires specialized tools, contact a qualified technician.
- They may replace the Inverter Power Module or the entire Main Control PCB, and test compressor windings.
Do not attempt to repair the inverter module at component level without proper training and equipment.
Repair Difficulty
Required Part
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