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International Comfort Products HHP030GKA1 Furnace Door Switch
The furnace door switch blocks the vent fan and gas ignition from activating so as to stop a potential explosion. Do not try to fix it, just have it substituted for a new part ASAP if it is defective.
Some warnings of a barely functioning furnace door switch
- The door switch appears to be worn
- The system will not even begin to start even when you close the door
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