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International Comfort Products PGS036L100F Furnace Door Switch
The furnace door switch stops the fan and ignitor being triggered to start in order to prevent injury and fire. It is imperative that the switch be exchanged for a new one immediately if you can, if you suspect that it is not working.
Warnings of a deteriorating safety switch on the furnace door
- The switch appears as though it has been chipped
- The system will not fire up even when you close the door
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