Remeha
Overheating electrical component
Boiler smells of burning plastic or electrical burning
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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
Failing main PCB, Loose electrical connection causing arcing, Overheated pump or fan motor, Water ingress onto electrical parts
How to Fix / Troubleshooting
Safety first: Turn off power to the boiler immediately at the fused spur. Do not continue to operate the boiler until it has been inspected.
- Visual inspection (no touching): After cooling, look through any inspection windows or remove the front cover to check for obvious signs of burning, melted plastic, or scorch marks.
- Check for leaks: Water dripping onto electrical components can cause overheating and must be addressed.
- Engineer tasks: Identify and replace the overheated component (PCB, pump, fan), repair any wiring damage, fix any leaks, and test the boiler thoroughly before returning to service.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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