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International Comfort Products TCH Furnace Door Switch
The furnace door switch prevents the fan and gas ignition from starting in order to prevent injury and fire. Do not waste time and have it switched out immediately if you can, if you see that it is broken.
What are the signs that the safety switch on the furnace door really needs to be replaced?
- The door switch appears to be bent
- The whole system will not run even when you close the door
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