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International Comfort Products C8MPN150J20A1 Limit Switch
This is important because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts. The limit switch is a type of sensor switch located in the furnace that senses, or governs, when the heated air is warmed to a point for the blower to be activated.
Red flags critical limit switch is in dire need of a replacement
- The heating and AC system will not begin the ignition sequence nor will it stay running like it should
- The International Comfort Products system starts to erratically more often than not
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