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Samsung AVMKH020CA0 Limit Switch
One big reason why limit switches are designed that way is 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 switch in the heat exchanger that makes the determination when the air is warmed to a point to activate the main blower.
Some warnings critical limit switch is in dire need of a replacement
- The Samsung system starts to erratically frequently
- The heating and AC system refuses to start or run well even though the desired temperature has not been attained
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