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Carrier FX4CNF018000 Thermistor
In an HVAC system, a thermistor is a special kind of new age resistor that has a fluctuating resistance that is solely dependent on the amount of, or lack thereof, heat. They tell the circuit board when the temperature has been reached. The system control board needs to know the temperature in some specific areas of the system to make a decision on what needs to be done.
General indicators that your your all-important thermister will eventually need to be replaced
- The AC and heat system may never start up because of the failed thermistor
- Blower fan refuses in the attempt to ramp up to full speed
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Before buying or purchasing any Carrier FX4CNF018000 part, do your due diligence and make sure of the model number and also make a visual comparison so that you are positive that the correct thermistor is the one being purchased. There is no need to install the replacement part alone. Search for a pro in your town or city to do the job for you.
Feel free to download your manual for help.
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