Westinghouse Overcurrent or short circuit in furnace electrical system

Furnace occasionally trips the household circuit breaker during operation.

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.

Possible Causes

Blower motor drawing excessive current, Shorted wiring to cabinet or ground, Inducer motor winding short, Shorted transformer or IFC

Safety: Repeated breaker tripping is a fire hazard. Do not replace a breaker with a larger size.

Steps:

Inspect visible wiring in the furnace for melted insulation or contact with sharp metal edges; repair and secure as needed.
Check blower and inducer motors for signs of overheating or burning smell.
Have a technician measure motor amp draw and insulation resistance; replace any motor or transformer exceeding rated current or showing shorts.

Professional Required 5/5

Blower Motor Assembly

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