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International Comfort Products HAC048AKA1 Furnace Door Switch
The furnace door switch blocks the draft inducer and other risky devices from starting in order to prevent injury and fire. You must have the device switched out swiftly if it is not working in order to prevent injuries.
Some clues the safety door switch is on its last leg
- The switch appears to be stuck
- The HVAC system will not begin whether the door is open or closed
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