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International Comfort Products HAC436GKA4 Furnace Door Switch
A furnace door switch is a switch that blocks the vent fan and other risky devices from starting so as to avoid injuries. You should have the switch be replaced promptly if it is damaged so as to prevent something bad happening.
Clues to watch for to know the switch on your furnace door needs replacing
- The furnace does not turn on whether the door is off or on
- The furnace door switch seems to be worn down
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