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International Comfort Products H8MPL075B12A1 Limit Switch
Limit switches are built 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. The limit switch has a sensor in the heating area that can determine if and when the air is warmed to a point for the air to begin normal home circulation.
Signals of an unhealthy limit type switch
- The heating and cooling system is unable to start or run well longer than 10 minutes
- Your system is starting to go through the startup sequence but stops quickly more often than not
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