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International Comfort Products HHP448AKA1 Furnace Door Switch
The furnace door switch stops initial fan and gas ignition from starting so as to avoid injuries. It is imperative that the switch be swapped out promptly if it is damaged so as to prevent something bad happening.
Major indications your furnace door switch will need to be replaced
- The HVAC system will not fire up whether the door is off or on
- The safety door switch looks as if it has been broken completely
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