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Carrier 50XT-A42 Limit Switch
The limit switch has a sensor in the air handler that determines if and when the air is actually warm enough to activate the main blower. One big reason why limit switches are designed that way is because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts.
Chief elements of a poorly performing limit type switch
- The HVAC system will not even start nor will it stay running like it ought to
- The system is beginning to run inconsistently frequently
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If you are going to be buying or purchasing do your best and make sure of the correct model and also make a visual comparison in order to be sure the correct limit switch is being ordered. There is no need to replace the part all by yourself. Look for a professional in your community to do it for you.
Feel free to download your manual for help.
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