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Fujitsu ASU12RL2 Furnace Door Switch
A furnace door switch is a safety feature that stops the fan and ignitor from switching on so as to stop a potential explosion. It is important to get the part switched out ASAP if it is damaged so as to prevent something bad happening.
Clues of a declining furnace door switch
- The switch seems worn down
- The HVAC system will not even begin to start whether the door is open or closed
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