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International Comfort Products H9MPD050F12B1 Furnace Door Switch
The furnace door switch inhibits the vent fan and ignition sequence being triggered to start in order to prevent injury and fire. It is important to get the part swapped out at once especially if you suspect it is not working properly.
Subtle cues of an unhealthy safety furnace door switch
- The safety door switch appears to be bent
- The whole system does not turn on even with the door closed
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