IVT
Electrical overcurrent / 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, Shorted pump motor (hydronic), Damaged wiring harness, Faulty control board
How to Fix / Troubleshooting
Safety: Do not repeatedly reset a breaker that trips immediately. Risk of fire or shock.
- Isolate components: With power off, disconnect suspect loads (blower, pump) one at a time and then restore power to see if the breaker holds (performed by a qualified person).
- Inspect wiring: Look for burnt insulation, pinched wires, or signs of arcing inside the furnace.
- Replace faulty motor: If disconnecting a specific motor stops the breaker from tripping, that motor likely needs replacement.
Due to shock and fire risk, this fault should be handled by a licensed electrician or heating technician.
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Repair Difficulty
Professional Required
5/5
Required Part
IVT circulation blower motor
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