Some Maytag Neptune dryers use a thermistor temperature sensor to measure the temperature of the air in the dryer. When this sensor fails you can get a “tS”/”t5” error code which indicates a thermistor short. Testing this sensor is very easy, all you need is a digital mulit-meter that can read ohms.
This is how to test thermistor part number WP35001191:
- With the thermistor removed from the dryer set your meter to measure ohms (or to the 20K/40k ohms setting)
- Place one probe on each terminal of the thermistor
- The thermistor at room temperature should read approximately 10k ohms. If it is far off from that, the sensor will need to be replaced. (sensor in the above picture is a bad sensor)
- Once the bad sensor has been replaced, you will need to reset the code or else the TS code will continue to display.
Here is how to get into service mode to clear the TS code:
- First, Enter Service Mode. Dryer must be on before Service Mode can be entered. Press Chime and Temperature Keys for 3 seconds, or until 3 beeps are heard. The machine will now be in Service Mode.
- Next, access diagnostic codes by entering the Service Mode and pressing Wrinkle Prevent. A “d” will be displayed. Rotate the Cycle Selector Knob in either direction to step through the list of codes one code at a time.
- Then, to clear the diagnostic code list press the Sensor Dry Level and Time keypads together for 3 seconds while viewing the list. The cycle count for each diagnostic code will be reset to 0, but not the machine cycle count.
- Finally exit service mode by pressing the OFF key or repeat the Chime and Temperature sequence.
If you need to purchase a thermistor sensor for your dryer click the link below: