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International Comfort Products NTC6100KJA1 Furnace Door Switch
This switch prevents initial fan and ignitor being triggered to start so as to stop a potential explosion. Do not try to fix it, just have it exchanged for a new one swiftly if you see that it is broken.
Major red flags your safety switch on the furnace door has to be replaced
- The system will not engage whether the door is off or on
- The door mechanism appears as though it has been worn
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