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Carrier 50JX030300 Furnace Door Switch
A furnace door switch is a safety feature that stops the draft inducer and ignition sequence being triggered to start so as to avoid injuries. It is vital that this part be switched out as soon as possible if it is defective in some way or another.
Major symptoms the safety door switch will die soon
- The door switch appears as though it has been damaged
- The HVAC system does not even thing about starting whether the door is off or on
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