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Carrier 25HPA418A0030010 Furnace Door Switch
A furnace door switch is a safety feature that prevents the fan and burner from switching on so as to avoid injuries. Do not waste time and have it traded for new one ASAP if it is causing you problems.
Important clues of a poorly performing safety door switch
- The door mechanism has been not there
- The system does not turn on even with the door closed
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