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Carrier 38YSA042 Limit Switch
A normal limit switch contains a sensor located in the furnace that decides if and when the air is warmed to a point to activate the main blower. Limit switches are crucial because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts.
Major signs of a barely functioning main limit switch
- The system starts to runs spotty on a regular basis
- The heating and cooling system will not even start nor will it stay running longer than 30 seconds
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If you decide on picking up or ordering any Carrier 38YSA042 replacement part do your best and cross-check the correct model as well as make a visual inspection in order to be sure the correct replacement limit switch is the one being purchased. You do not need to replace the part all by yourself. Find a professional in your town or city to do it for you.
Feel free to download your manual for help.
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