Concord
Overcurrent or Short Circuit
Furnace occasionally 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, Pinched line voltage wiring, Faulty integrated furnace control board
How to Fix / Troubleshooting
Safety: Do not repeatedly reset a tripping breaker. Turn off power and investigate.
Steps:
- Visual inspection: Look for burned or pinched wires in the blower and burner compartments.
- Isolate motors: A technician can disconnect blower and inducer motors one at a time to determine which is causing the trip.
- Check board: Inspect the control board for burn marks or damaged traces.
Recommendation: Because this involves line voltage and potential fire hazards, have a qualified technician perform detailed diagnostics.
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Repair Difficulty
Professional Required
5/5
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