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International Comfort Products C8DNL050B12A1 Limit Switch
The limit switch is a switch in the air handler that can determine when the air is warmed to a point that it can be circulated throughout the house. Limit switches are crucial due to the fact that if the air inside the furnace is too cool the you will lose all the heat as the air flows through the ducts.
Major signs of a barely functioning limit switch
- System will not begin the ignition sequence or continue to run longer than a minute
- Your system is beginning to run erratically occasionally
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