Amana Dryer Error Code tS

The tS code means the dryer's control board has detected a thermistor short, meaning the thermistor's resistance has dropped to a very low level that falls outside the normal operating range. The thermistor is the component responsible for monitoring air temperature inside the dryer. This fault causes the dryer to stop operating until the condition is diagnosed and resolved. Checking airflow restrictions and testing thermistor resistance are the recommended first steps.

It is not recommended to continue operating the dryer while the tS error is active. Because the thermistor monitors temperature, a shorted sensor means the control board cannot accurately detect overheating conditions. Running the dryer without reliable temperature sensing creates a potential fire hazard, particularly if the underlying cause is also an airflow restriction.

Resetting the dryer by disconnecting power may temporarily clear the tS code, but the fault will return if the underlying problem has not been fixed. Because the control board detects the short condition during operation, the code will reappear as soon as the thermistor circuit is read again. A proper repair addressing the thermistor, wiring, or airflow restriction is necessary to permanently resolve the fault.

Some causes of the tS code are DIY-friendly, such as cleaning a clogged lint screen or clearing a blocked vent duct. Testing the thermistor requires a multimeter and basic knowledge of resistance measurements. If the thermistor or wiring harness needs to be replaced, a mechanically inclined homeowner can often complete the repair, though comfort with appliance disassembly is helpful.

If only the lint screen needs cleaning or the vent needs clearing, there may be no parts cost at all. Replacing a thermistor typically costs between $15 and $50 for the part, plus labor if a technician is hired. A full service call including diagnosis and parts can range from $100 to $250 or more depending on the specific fault found and local labor rates.