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International Comfort Products TCA448AKA1 Furnace Door Switch
The job of the furnace door switch blocks initial fan and ignitor being triggered to start so as to stop a potential explosion. You should really have it exchanged for a new one as soon as you can if it is causing you problems.
How can I tell if my safety switch on the furnace door is almost going bad?
- The furnace will not begin even with the door closed
- The door mechanism seems to be not there
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Feel free to download your manual for help.
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