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Carrier 38CKC036 Limit Switch
A normal limit switch is a type of sensor switch in the air handler that determines when the air is actually warm enough that it can be circulated throughout the house. Limit switches exist because if the air is too cool inside the furnace to begin with, then the house will never get warm enough.
Hints of a weak main limit switch
- The system is beginning to run inconsistently frequently
- The heating and cooling system will not begin or run well as it should
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