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Carrier 38YCS060 Limit Switch
A normal limit switch has a sensor in the heat exchanger that senses, or governs, when the heated air is warm enough for the blower to be activated. Limit switches exist due to the fact that if the air inside the furnace is too cool the you will lose heat in the ducts and the vents will just blow cool air.
Major symptoms poorly running main limit switch
- The heating and AC system will not begin or run well as it should
- The HVAC system starts to runs spotty more than once
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