Oster air fryer fan continues to run for a long time after the cooking cycle ends.

Safety: It is generally safe for the fan to run after cooking; do not unplug the unit solely to stop the fan unless necessary.

• Check manual: Many Oster models intentionally run the fan after cooking to cool internal parts. Verify if this is normal behavior for your model.
• Observe duration: If the fan runs more than 15–20 minutes after shutdown, there may be a sensor or control issue.
• Improve ventilation: Ensure the fryer has adequate space around it to cool quickly.
• Inspect sensor and board (advanced): If the fan never shuts off until unplugged, the control board relay may be stuck or the temperature sensor may be reading too high. Test and replace the sensor or main control board as needed.