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Mitsubishi MSZ-09UN Thermistor
A thermistor is a specific kind of resistor that has a swinging resistance is solely dependent on the amount of, or lack thereof, heat. They notify the heating and cooling system when a certain temperature reaches a certain point. The system control board deciphers the temp throughout the whole system to ensure that things are as they should be.
Some clues the Mitsubishi thermister is dying
- The entire system may not even begin to function depending on which is the broken thermistor
- The blower could never begin to begin to engage full speed spinning
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