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Lennox XC15 Furnace Door Switch
The furnace door switch is a safety switch which stops initial fan and burner from starting in order to prevent injury and fire. It is important to get the part swapped out as soon as possible especially if you think it is defective.
Major indications the switch on your furnace door is not going to last much longer
- The furnace door switch seems to be messed up
- The whole system will not run with the door closed
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