Lennox
Electrical Overload / 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 Lennox control board, Oversized blower motor drawing excessive current
How to Fix / Troubleshooting
Danger: Repeated breaker tripping indicates a serious electrical fault. Do not repeatedly reset the breaker.
- 1. Visual inspection: With power off, inspect wiring for burn marks or melted insulation.
- 2. Isolate components: A technician can disconnect blower or inducer to isolate the fault.
Electrical shorts must be diagnosed and repaired by a qualified technician.
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Repair Difficulty
Professional Required
5/5
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