ACV
Electrical Short or Overcurrent
Boiler trips the electrical breaker or blows fuses when starting
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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 pump or fan motor, Shorted ignition transformer, Water ingress on wiring, Faulty main PCB
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a tripping breaker. Risk of fire or electric shock.
- Identify when it trips: Note whether the breaker trips immediately on power-up or only when the boiler attempts to start the fan or pump.
- Inspect for leaks: Look for water inside the boiler casing that may be dripping onto electrical components.
- Do not bypass protection: Never replace fuses with higher-rated ones or bypass breakers.
- Professional diagnosis: A qualified technician must test each component (pump, fan, ignition, PCB) for insulation resistance and replace the faulty part.
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Repair Difficulty
Professional Required
5/5
Required Part
Circulation Pump
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