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Carrier 58MSA040 Furnace Door Switch
A furnace door switch is a switch that stops the vent fan and ignitor being triggered to start so as to stop a potential explosion. Do not waste time and have it switched out swiftly if it is damaged so as to prevent something bad happening.
What warnings are present when my switch on the furnace door is almost dead?
- The HVAC system does not even thing about starting with the door closed
- The door mechanism seems beat up
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