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International Comfort Products H8MPN150J20A1 Limit Switch
The limit switch is a type of sensor switch located in the furnace that senses, or governs, when the air is warm enough for the air to begin normal home circulation. A limit switch was crafted because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air.
Some clues main limit switch needs replacing ASAP
- The system is starting to runs spotty more often than not
- The heating and cooling system is unable to start or run well for any significant length if time
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