ASKO Dryer Error Code Thermistor

This error means the dryer's temperature sensor has either become disconnected or has developed an internal fault. The thermistor, located in the fan housing, is responsible for monitoring air temperature during the drying cycle and reporting it to the control board. When the control board cannot get a valid reading from the thermistor, it stops the dryer to prevent unsafe operation. Diagnosis starts with checking the sensor's resistance, which should fall between 40 and 60 kΩ at room temperature.

No, you should not continue running the dryer with this error active. The thermistor is what allows the control board to regulate heat, and without valid temperature data, the dryer cannot prevent overheating. Continuing to use the appliance could pose a fire risk or cause damage to other components. Resolve the error before resuming normal use.

If the fix is simply reseating a loose connector, there is no parts cost involved. A replacement thermistor part typically falls in the range of $20 to $60 depending on the specific model. If professional labor is needed, total repair costs including parts and service can range from $100 to $250. A control board replacement, if required, would be at the higher end of the repair cost spectrum.

A knowledgeable DIYer with a multimeter can often resolve this error by checking the thermistor resistance and reseating the connector in the fan housing. If the resistance reading is outside the 40 to 60 kΩ range at 68°F to 86°F, the thermistor itself needs replacement, which requires purchasing the correct part and accessing the fan housing interior. If wiring or the control board is involved, professional repair is recommended.

A reset may temporarily clear the error code, but it will return if the underlying problem with the thermistor or its wiring has not been corrected. The control board will detect the out-of-range or missing signal again as soon as a drying cycle begins. A lasting fix requires diagnosing and repairing the sensor, its connector, or the associated wiring.