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Haier CPN10XH9 Furnace Door Switch
This switch blocks the draft inducer and other risky devices being triggered to start so as to stop a potential explosion. It is quite important to have it traded for new one ASAP if it is defective.
Indications of a dying safety furnace door switch
- The HVAC system cannot run even when you close the door
- The door switch seems to be removed
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