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International Comfort Products TCA436AKA1 Furnace Door Switch
A furnace door switch is a safety feature that prevents initial fan and gas ignition from turning on so as to stop a potential explosion. It is vital that this part be replaced as soon as possible if you see that it is broken.
Easy warnings of a bad safety door switch
- The switch appears as though it has been chipped
- The HVAC system does not even thing about starting even when you close the door
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