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Lennox CBX32M-018 Furnace Door Switch
The furnace door switch prevents the vent fan and other risky devices from starting so as to avoid injuries. You must have the device traded for new one promptly if it is damaged so as to prevent something bad happening.
Key indicators that my safety door switch is on its last leg?
- The furnace does not run whether the door is off or on
- The door switch looks like it is chipped
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