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Carrier FV4CNB006 Limit Switch
The limit switch has a sensor located in the furnace that determines if and when the air is warm enough for the blower to be activated. A limit switch was crafted because if the air is too cool inside the furnace to begin with, the you will lose heat in the ducts and the vents will just blow cool air.
Major warnings of a faulty limit switch
- The system is beginning to run inconsistently more than once
- Your Carrier system is unable to start or run longer than 10 minutes
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If you decide on picking up or purchasing do your best and make sure of the correct model as well as make a visual comparison so that you are positive that the correct limit switch is being ordered. HVAC pros can be expensive so it is best to shop around to find a good deal if you want to pay bottom dollar.
Feel free to download your manual for help.
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