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Carrier 51CM Limit Switch
The limit switch is a switch in the heat exchanger that decides when the heated air is warm enough for the main blower to kick in and circulate the air. This is important because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air.
Easy warnings of a weakening critical limit switch
- The system starts to runs spotty repeatedly
- The HVAC system will not initiate or run for any length of time
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If you decide on picking up or purchasing any Carrier 51CM replacement part do your best and double check the correct model as well as make a visual comparison in order to be sure the correct limit switch is the one being purchased. There is no need to replace the part all by yourself. Consult with a professional in your community to hire and install the part for you.
Feel free to download your manual for help.
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