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International Comfort Products CHP030AKA1 Limit Switch
One big reason why limit switches are designed that way is due to the fact that if the air inside the furnace is too cool then you will never get hot air through the ducts. A normal limit switch is a type of sensor switch located in the furnace that decides if and when the air is warmed to a point for the main blower to kick in and circulate the air.
Major clues poorly running main limit switch
- The system is starting to act weird on more than one occasion
- The heating and cooling system will not initiate or run well for any significant length if time
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