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Mitsubishi MUZ-GE09NA Furnace Door Switch
The job of the furnace door switch inhibits initial fan and gas ignition from starting in order to prevent injury and fire. It is vital that this part be swapped out as soon as you can if you suspect that it is not working.
What symptoms are present when the safety door switch really needs to be replaced?
- The door mechanism is worn
- The HVAC system will not fire up whether the door is off or on
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