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International Comfort Products CAC424AKA1 Limit Switch
A normal limit switch is a type of sensor switch in the heat exchanger that can determine if and when the air is warm enough for the main blower to kick in and circulate the air. The main reason limit switches are made is because if the air is too cool inside the furnace to begin with, then the house will never get warm enough.
Do you know if your main limit switch is not working right?
- Your system is starting to go through the startup sequence but stops quickly on more than one occasion
- The heating and cooling system will not begin the ignition sequence or run even though the desired temperature has not been attained
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