Tempstar
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, Pinched wiring harness in Tempstar cabinet, Oversized or incorrect breaker/fuse combination
How to Fix / Troubleshooting
Warning: Repeated breaker trips indicate a serious electrical issue. Do not replace a breaker with a larger size.
- Step 1 – Inspect wiring: With power off, inspect all visible wiring for cuts, burns, or pinched sections, especially where panels contact wires.
- Step 2 – Test motors: Disconnect blower and inducer motors one at a time and try running the furnace. If the breaker stops tripping when a motor is disconnected, that motor is likely shorted and must be replaced.
- Step 3 – Check breaker size: Verify the breaker size matches the Tempstar furnace nameplate rating.
- Step 4 – Professional repair: Have a licensed electrician or HVAC technician repair any wiring or motor faults.
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Repair Difficulty
Professional Required
5/5
Required Part
Tempstar Blower Motor
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