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International Comfort Products PGC Limit Switch
A normal limit switch is a type of sensor switch in the heating area 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. Limit switches are built because if the air never warms up then you will never get hot air through the ducts.
Major signs of a bad main limit switch
- The heating and cooling system will not initiate or run longer that five minutes
- The whole system begins to go through the startup sequence but stops quickly often
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