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Carrier 38TXA048 Limit Switch
This is important because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts. The limit switch has a sensor located in the furnace that determines when the heated air is actually warm enough for the main blower to kick in and circulate the air.
What warnings are present when my limit switch most likely really needs to be replaced?
- The heating and AC system will not even start or run for any length of time
- The whole system is beginning to go through the startup sequence but stops quickly time after time
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If you are going to be buying or purchasing do your best and double check the correct model as well as make a visual inspection in order to be sure the proper replacement limit switch is the one being purchased. You do not need to replace the part all by yourself. Hire a pro locally to do it for you.
Feel free to download your manual for help.
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