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Carrier 58CTA11010012 Furnace Door Switch
A furnace door switch is a safety feature that stops the draft inducer and ignition sequence from switching on so as to avoid injuries. You should really have it traded for new one immediately if you can, if it is defective.
Elements of a declining safety furnace door switch
- The HVAC system will not start whether the door is open or closed
- The switch appears to be worn down
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