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Carrier 58TUA Furnace Door Switch
A furnace door switch is a safety feature that blocks the blower and ignitor from activating so as to stop a potential explosion. It is quite important to have it switched out ASAP if you see that it is broken.
Warnings of a barely functioning switch on the furnace door
- The furnace door switch appears to be breaking off
- The whole system does not operate even with the door closed
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