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Thermistor PTC305C9L03
This part PTC305C9L03 is compatible with:
- Product Type:
- Central Air Conditioner, Furnace
- Brands:
- Carrier, Payne
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Thermistor Customer Reviews
Common Problems Fixed by the Thermistor
Based on customer reports and repair data, this part commonly fixes these issues:
Central air conditioner - home's humidity is too high
Heat pump - home's humidity is too high
About the Thermistor
The thermistor is a sensor connected to the control board that detects the temperature of the air. The resistance value of the thermistor changes in conjunction with the air temperature. If the air temperature rises, the resistance value will decrease. To determine if the thermistor is at fault, use a multimeter to test it for continuity. If the thermistor does not have continuity, or if the resistance of the thermistor does not change with a change in temperature, replace the thermistor. (To find specific temperature and resistance values, try checking your user’s manual.)
Repair Help by Brands and Product Type
Alternative Part Number(s)
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