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Rick Mather
Rick Mather, HVAC Technician
Category: HVAC
Satisfied Customers: 3634
Experience:  35 years experience, HVAC
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We have an old Wesco Electric furnace in a mobil home. Ive

Customer Question

We have an old Wesco Electric furnace in a mobil home. I've replace the thermostat, relay, and sequencer, but the heat coils do not want to shut down after the temperature is up, so the fan keeps running. Even turning the thermostat all the way down, still does not turn off the heat coils. What could the problem be?
Submitted: 6 years ago.
Category: HVAC
Expert:  Rick Mather replied 6 years ago.

Rick Mather :

What ever is used to switch high voltage to the heating elements is fused together and will not release the electric to heating elements, maybe be contactors contolled by the sequencer