Chaffoteaux
Electrical Short / Earth Leakage
Furnace frequently trips the household RCD or blows fuses.
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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 electrical components, Shorted pump or fan motor, Damaged wiring insulation, Faulty control board
How to Fix / Troubleshooting
Safety: Do not repeatedly reset an RCD that trips; there may be a serious fault.
- Visual inspection: With power off, remove the front cover and look for signs of water leaks, burnt components, or damaged cables.
- Dry out moisture: If there is minor condensation, allow the furnace to dry completely before re-energizing. Fix the source of moisture.
- Isolate suspect components (professional): A technician can disconnect pump, fan, and other loads one by one to identify the faulty component.
- Replace damaged parts: Any component causing tripping must be replaced; do not bypass safety devices.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (PCB)
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