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LG LMN120CE Furnace Door Switch
The furnace door switch is a safety switch which prevents the fan and gas ignition from switching on so as to stop a potential explosion. It is quite important to have it changed at once if it is damaged so as to prevent something bad happening.
Red flags your furnace door switch is not going to last much longer
- The door mechanism looks like it is broken
- The furnace will not engage whether the door is open or closed
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