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Carrier 48GS024040300 Furnace Door Switch
A furnace door switch is a safety feature that inhibits the fan and ignitor from starting in order to prevent injury and fire. You must have the device exchanged for a new one ASAP if it is damaged so as to prevent something bad happening.
Major signs of a failing safety switch on the furnace door
- The safety door switch has been beat up
- The whole system does not even thing about starting with the door closed
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