Whirlpool Dryer Error Code F:23

F:23 means the exhaust thermistor has shorted. The exhaust thermistor is a temperature sensor in the dryer's exhaust airflow path, and it communicates temperature data to the control board through resistance values. A short circuit in the thermistor or its wiring sends an invalid signal to the control board, which triggers this fault code and stops the dryer from operating.

No, you should not attempt to run the dryer while this code is active. The exhaust thermistor helps the dryer monitor for overheating conditions, and with a shorted sensor, the control board cannot reliably track exhaust temperatures. Operating the dryer without a functioning temperature sensor creates a potential fire or overheating risk.

If the exhaust thermistor itself is the problem, parts typically cost in the range of $15 to $50 depending on the specific model, making it one of the more affordable dryer repairs. If a technician is needed for diagnosis and installation, expect total costs in the range of $100 to $250. A control board replacement, if required, would push costs significantly higher.

A knowledgeable DIYer can diagnose this fault by following the TEST #4a diagnostic procedure, which involves checking the thermistor resistance at its connector points. If the thermistor is confirmed faulty, replacing it is a relatively straightforward repair. However, if the control board is the root cause, that replacement is more complex and may warrant a professional technician.

A power reset may temporarily clear the code, but it will return if the underlying fault is still present. The short circuit in the thermistor or wiring needs to be physically repaired or the component replaced for the code to clear permanently. Resetting without repairing is not a solution.