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International Comfort Products T8MPL100J20A1 Limit Switch
A normal limit switch has a sensor in the heating area that senses, or governs, when the air is warmed to a point for the air to begin normal home circulation. The main reason limit switches are made is due to the fact that if the air inside the furnace is too cool the you will lose all the heat as the air flows through the ducts.
Elements of an ailing main limit switch
- The system is starting to shut down unexpectedly occasionally
- System will not begin or continue to run even though the desired temperature has not been attained
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