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Samsung AVMBC040CA0 Limit Switch
Limit switches are built because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts. The limit switch is a type of sensor switch in the heat exchanger that decides when the heated air is warmed to a point so that it may be pushed through the ducts and out the vents.
Key indicators that my critical limit switch is not working properly?
- System will not initiate or continue to run for any significant length if time
- The whole system is beginning to run inconsistently more often than not
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