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International Comfort Products NHP224GKA1 Furnace Door Switch
The furnace door switch is a safety switch which blocks the blower and gas ignition from activating so as to stop a potential explosion. It is crucial to have this part switched out as quick as you can if you see that it is broken.
Major signs the switch on your furnace door needs to be replaced
- The whole system will not start whether the door is open or closed
- The switch looks like it is broken completely
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