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Frigidaire FRS12PYW10 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. A normal limit switch is a type of sensor switch in the heat exchanger that makes the determination when the air is warmed to a point so that it may be pushed through the ducts and out the vents.
What are the signs that the main limit switch is on its last leg?
- The Frigidaire system begins to behave erratically on a regular basis
- System refuses to kick in nor will it stay running like it is supposed to
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