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Carrier 45-4SI Thermistor
In an HVAC system, a thermistor is a thermal resistor, whose resistance depends on the heat. The system interprets the temperature in a few critical areas to be sure everything is going well. They tell the system when a temperature has been reached.
Warnings of an ailing temp regulating thermister
- The entire system may not even begin to function because of the thermistor that is the problematic one
- The main fan may refuse in its attempt to engage full speed
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Before buying or ordering do your best and double check the model number as well as make a visual comparison in order to be sure the proper replacement thermistor is being ordered. If you are unsure about installing the thermistor by yourself then it may be wise to consult a pro to do the work for you.
Feel free to download your manual for help.
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