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Goodman GPH1336M41AB Furnace Door Switch
The furnace door switch prevents the blower and gas ignition from starting so as to stop a potential explosion. You should have the switch be substituted for a new part immediately if you can, if you find it to be faulty.
Important clues of a poorly performing furnace door switch
- The door mechanism is eroded
- The HVAC system does not run even with the door closed
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