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International Comfort Products T9MPD100J14C1 Furnace Door Switch
The job of the furnace door switch blocks the fan and gas ignition from turning on so as to stop a potential explosion. It is quite important to have it traded for new one quickly especially if you suspect it is not working properly.
Clues to watch for to know your safety switch on the furnace door needs replacing
- The switch seems removed
- The HVAC system does not fire up even with the door closed
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