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International Comfort Products NDN5100BHC1 Limit Switch
Limit switches are crucial because if the air is too cool inside the furnace to begin with, the you will lose all the heat as the air flows through the ducts. A normal limit switch is a switch in the heating area that makes the determination if and when the air is warm enough to activate the main blower.
Indications main limit switch is failing
- The heating and cooling system refuses to kick in or continue to run longer than a minute
- The International Comfort Products system begins to act differently on more than one occasion
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