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Whirlpool ATR1552SPP0 Furnace Door Switch
A furnace door switch is a safety feature that inhibits the vent fan and ignition sequence from turning on so as to avoid injuries. You should really have it exchanged for a new one as soon as you can if it is not working in order to prevent injuries.
Warnings of a dying safety switch on the furnace door
- The safety door switch is broken completely
- The HVAC system does not begin to work with the door closed
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