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Haier CPN12XH9-E Furnace Door Switch
The furnace door switch is a safety switch which inhibits the vent fan and burner from switching on so as to stop a potential explosion. It is imperative that the switch be substituted for a new part as soon as you can if you find it to be faulty.
Some warnings of an ailing switch on the furnace door
- The furnace does not run even with the door closed
- The safety door switch appears to be worn down
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