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International Comfort Products C8MPV100J20A1 Limit Switch
The limit switch contains a sensor located in the furnace that makes the determination if and when the air is warmed to a point that it can be circulated throughout the house. Limit switches are crucial because if the air is too cool inside the furnace to begin with, then the house will never get warm enough.
Clues of an ailing limit type switch
- The heating and AC system will not begin or continue to run like it ought to
- The system starts to erratically more than once
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