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Heat Controller SMA 12 Thermistor
In an HVAC system, a thermistor is a special kind of new age resistor that has a swinging resistance is altered by current temperature. The system control board takes the temperature in certain areas to do its job correctly. They notify the system control board when the temperature in increasing or decreasing.
Indications the temp-regulating thermister is going out
- The AC and heat system may not operate due to any one thermistor that is the problematic one
- Primary blower fails in the attempt to begin full speed blowing
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Before buying or ordering a new Heat Controller SMA 12 replacement part do your best and cross-check the model number as well as make a visual inspection so that you are positive that the correct thermistor is being ordered. You do not need to replace the part all by yourself. Pay a professional in your town or city to hire and install the part for you.
Feel free to download your manual for help.
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