Maytag Dryer Error Code F13

F13 on a Maytag stack dryer means the control board has detected that the upper thermistor is reporting a temperature above the safe operating limit. This can indicate a real overheating condition caused by restricted airflow, or it can indicate a failed thermistor sending a false signal. The dryer will stop operating to prevent heat damage or a fire hazard. The upper unit's venting and thermistor circuit should be inspected before restarting the dryer.

Yes, F13 should be taken seriously because it indicates either a genuine overheating event or a sensor failure that prevents proper temperature monitoring. Both scenarios are safety concerns: actual overheating can lead to component damage or fire, and a failed sensor means the dryer may be running without reliable temperature control. Do not continue operating the dryer until the cause has been identified and repaired.

Repair costs vary depending on the cause. Cleaning a blocked vent is typically a low-cost fix you may be able to do yourself. Replacing the upper thermistor generally involves a modest parts cost, typically in the range of $15 to $50 for the sensor, plus labor if you hire a technician. A control board replacement is the most expensive scenario, with parts alone often ranging from $100 to $250 or more depending on the model.

You can attempt a reset by unplugging the dryer for a few minutes and restoring power, but if the underlying cause is not corrected the code will return. If the code is caused by an actual airflow restriction or overheating condition, continuing to run the dryer without addressing the problem is a fire risk. A reset is only appropriate as a temporary step while you diagnose the root cause.

Start by cleaning the lint screen and inspecting the exhaust duct for the upper unit to rule out airflow restriction. If venting is clear, test the upper thermistor with a multimeter to check for a short circuit or resistance reading that falls outside the normal operating range. Also inspect the wiring harness connecting the thermistor to the control board for any damage or corrosion at the connectors. If the thermistor or wiring checks out, a control board fault or blower issue may require further diagnosis.