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Whirlpool ATR1253SPP0 Furnace Door Switch
The furnace door switch is a safety switch which inhibits the fan and ignitor from turning on so as to stop a potential explosion. It is quite important to have it swapped out quickly if it is causing you problems.
Some clues the switch on your furnace door needs replacing
- The door switch appears as though it has been broken badly
- The system does not fire up whether the door is off or on
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