Napoleon
Electrical Overload or Short Circuit
Furnace frequently trips the household circuit breaker
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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 blower motor windings, Shorted inducer motor, Shorted wiring to cabinet, Faulty control board causing overcurrent
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a tripping breaker. Turn it off and leave it off until the cause is found. Working on these circuits should be done by qualified personnel.
- Visual inspection: With power off, inspect wiring inside the furnace for melted insulation, pinched wires, or signs of arcing.
- Isolate components: A technician can disconnect blower and inducer motors one at a time and test operation to identify the component causing the trip.
- Motor replacement: Replace any motor that shows signs of overheating or tests with low insulation resistance.
- Board inspection: Look for burned traces or components on the control board; replace if damaged.
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Repair Difficulty
Professional Required
5/5
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