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Payne PY2PNB060115AA Furnace Door Switch
A furnace door switch is a safety feature that inhibits the vent fan and ignition sequence from activating so as to stop a potential explosion. It is imperative that the switch be substituted for a new part as quick as you can if you see that it is broken.
Simple indications of a deteriorating safety door switch
- The furnace does not operate even with the door closed
- The switch looks like it is eroded
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