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Carrier 58MSA120 Furnace Door Switch
The job of the furnace door switch prevents the draft inducer and other risky devices from activating in order to prevent injury and fire. You should have the switch be traded for new one as soon as possible if it is damaged so as to prevent something bad happening.
Some clues the switch on your furnace door needs a replacement ASAP
- The safety door switch looks bent badly
- The HVAC system will not engage even when you close the door
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