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International Comfort Products TCA218AKA1 Furnace Door Switch
The furnace door switch blocks the blower and other risky devices from starting in order to prevent injury and fire. It is crucial to have this part switched out as soon as possible if it is defective.
Major warnings your safety switch on the furnace door is on its last leg
- The safety door switch looks like it is chipped
- The HVAC system will not fire up whether the door is open or closed
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