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HOME > HVAC > CARRIER > 38YSA042 > THERMISTOR

Carrier 38YSA042 Thermistor

In an HVAC system, a thermistor is a thermal resistor, that has a varied resistance that is directly proportioned to actual temperature is perceives. They tell the main board when a certain temperature in increasing or decreasing. The system control board deciphers the temp in a few critical areas to know what to do next.

What warnings should I watch out for to know if my main thermister has a need to be replaced?

Main blower refuses to begin to engage full speed
The entire system may never start up due to any one problematic thermistor

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Check eBay to see if your thermistor is in stock!

If you are going to be buying or purchasing do your best and double check the model number and also make a visual comparison so that you are positive that the proper replacement thermistor is being ordered. You do not have to install it yourself. Look for a professional in your community to hire and install the part for you.

Feel free to download your manual for help.

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Check eBay for your thermistor!