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International Comfort Products H9MPD125L20C2 Limit Switch
One big reason why limit switches are designed that way is because if the air is too cool inside the furnace to begin with, the you will lose heat in the ducts and the vents will just blow cool air. The limit switch is a switch located in the furnace that makes the determination if and when the air is actually warm enough for the blower to be activated.
What to see if the limit switch most likely is not working properly?
- The International Comfort Products system begins to runs uneven on more than one occasion
- The heating and AC system will not even start or run like it should
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