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International Comfort Products NAC242AKA1 Limit Switch
The reason limit switches exist is because if the warmed air is too cool then the house will never get warm enough. A normal limit switch is a type of sensor switch in the heat exchanger that senses, or governs, when the heated air is warm enough for the main blower to kick in and circulate the air.
Clues critical limit switch is on its last leg
- Your system starts to shut down unexpectedly more often than not
- The heating and cooling system will not initiate or continue to run longer than a minute
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