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Panasonic CU-KS12NK1A Furnace Door Switch
The furnace door switch is a safety switch which prevents the fan and ignition sequence being triggered to start in order to prevent injury and fire. Do not try to fix it, just have it replaced quickly if you suspect that it is not working.
Subtle cues of a barely functioning safety furnace door switch
- The safety door switch appears to be removed
- The furnace does not fire up whether the door is off or on
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