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International Comfort Products HAC430GKA4 Furnace Door Switch
The furnace door switch stops the blower and gas ignition from activating so as to avoid injuries. Do not try to fix it, just have it substituted for a new part as soon as possible if it is causing you problems.
General indicators that your safety switch on the furnace door will have to be replaced
- The door switch has been broken
- The HVAC system will not even begin to start even when you close the door
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