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International Comfort Products TCH018AKA1 Furnace Door Switch
The furnace door switch prevents the fan and gas ignition from activating so as to avoid injuries. It is quite important to have it exchanged for a new one immediately if you can, if it is defective.
Major indications the safety door switch is not going to last much longer
- The safety door switch looks worn down
- The system does not operate whether the door is open or closed
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