Hewalex
Electrical Short Circuit / Earth Leakage
Unit trips the main circuit breaker or RCD when starting or during operation.
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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
Shorted compressor or fan motor, Water ingress into electrical box, Damaged power cable insulation, Faulty inverter or PCB causing leakage to earth
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a tripping breaker. Risk of fire or electric shock.
- Visual inspection: With power off, inspect the interior for signs of water, corrosion, or burned components.
- Dry the unit: If water ingress is found, dry the area thoroughly and identify the source of the leak before re‑energizing.
- Check cable and terminals: Look for damaged insulation or loose, blackened terminals on the main terminal block.
- Professional testing: A qualified electrician or technician should perform insulation resistance tests on the compressor, fan motor, and wiring, and check the inverter for faults.
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Repair Difficulty
Professional Required
5/5
Required Part
Power Cable and Main Terminal Block
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