Certikin
Electrical Short / Earth Leakage
Heater trips the electrical 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
Water ingress into Certikin electrical compartment, Damaged cable insulation, Faulty fan motor or pump relay, Failing control PCB causing leakage to earth
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a tripping breaker. Isolate power and investigate the cause.
- Inspect for moisture: Check inside the heater for signs of water leaks or condensation near electrical components.
- Dry thoroughly: If moisture is present, dry the area and fix any leaks before re-energising.
- Check cables: Look for obvious damage to cables entering the heater and to internal wiring looms.
- Isolate auxiliaries: If possible, disconnect non-essential loads (e.g. external pumps controlled by the heater) to see if the trip stops.
Insulation resistance testing and component replacement should be carried out by a qualified electrician or service engineer.
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Repair Difficulty
Hard
4/5
Required Part
Certikin control PCB / fan motor / wiring harness
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