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Goodman P1256809F Furnace Door Switch
The furnace door switch blocks the vent fan and other risky devices from starting so as to stop a potential explosion. It is quite important to have it traded for new one as quick as you can if it is defective in some way or another.
Important clues of a bad switch on the furnace door
- The whole system will not begin whether the door is open or closed
- The door switch looks broken completely
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