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Goodman ASPF313716 Furnace Door Switch
A furnace door switch is a safety feature that inhibits the fan and ignitor from switching on so as to avoid injuries. You should really have it replaced immediately if you can, if you see that it is broken.
Some warnings of a dying switch on the furnace door
- The HVAC system will not even begin to start even when you close the door
- The safety door switch seems removed
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