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Frigidaire FRS093LW12 Limit Switch
A normal limit switch is a type of sensor switch in the air handler that senses, or governs, when the air is warm enough that it can be circulated throughout the house. Limit switches are crucial because if the air is too cool inside the furnace to begin with, the you will lose all the heat as the air flows through the ducts.
Red flags main limit switch is dying
- Your system begins to runs spotty time after time
- The heating and AC system will not start or continue to run even though max temp has not been reached
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