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International Comfort Products PGMD36G0906 Furnace Door Switch
The furnace door switch is a safety switch which blocks initial fan and ignitor from activating so as to stop a potential explosion. It is extremely important that the device is changed promptly if you see that it is broken.
Major red flags the safety door switch is in dire need of a replacement
- The system does not fire up whether the door is open or closed
- The furnace door switch appears to be fallen off
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