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International Comfort Products GPSM36H100F Furnace Door Switch
The furnace door switch is a safety switch which prevents the draft inducer and ignition sequence being triggered to start in order to prevent injury and fire. It is imperative that the switch be traded for new one at once if you see that it is broken.
Important signs the safety door switch is dead
- The furnace door switch looks like it is eroded
- The system will not begin even with the door closed
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