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International Comfort Products NHP230AKA1 Furnace Door Switch
The furnace door switch is a safety switch which prevents the blower and ignitor from switching on so as to stop a potential explosion. You should have the switch be changed quickly if it is defective.
Cues poorly running safety switch on the furnace door
- The door mechanism appears as though it has been broken
- The system will not begin whether the door is open or closed
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