This prompt indicates that the right or left slot of the CFS2 experienced an abnormal temperature rise during the automatic dehumidification/filament drying process, with abnormal temperature feedback or the system detecting that the corresponding slot is unable to heat up to the target temperature of 38°/45°. Therefore, the device will stop the active drying/automatic dehumidification function to avoid abnormal drying results, abnormal temperature control, or damage caused by continued hardware operation.
- Check the operating environment: Confirm that the device is in a normal room temperature environment, and avoid using it in low-temperature conditions, direct strong airflow, or environments with excessively fast heat dissipation.
- Check the thermistor temperature feedback: Confirm whether the temperature display inside the slot is normal, and whether there are situations such as no temperature change, temperature fluctuation, or clearly unreasonable readings. If so, the corresponding thermistor needs to be replaced.
- Check the fan operating status: Temperature rise requires air circulation inside the slot. If the corresponding R/L slot fan is not spinning, stuttering, or making abnormal noise, it may cause abnormal heat distribution or heating failure. You can refer to the relevant documentation to check the corresponding Wiki: FF2874: CFS 2 R/L fan malfunction
- Replace faulty components: If the heating assembly, fan, temperature and humidity sensor, or wiring harness is confirmed to be damaged, the corresponding components need to be replaced.
- Check the device's operating environment, and avoid low-temperature environments, direct airflow from air conditioners/fans, or excessively fast heat dissipation in the surrounding area.
- Restart the device, enter the active drying or automatic dehumidification function, and observe whether the temperature of the corresponding slot continues to rise.
- If the temperature does not rise or rises too slowly, observe whether the corresponding R/L slot fan is operating normally, and confirm there is no abnormal noise, stuttering, or failure to spin.
- Re-secure the relevant connectors and restart the device for testing. If the fault persists, replace the corresponding R/L slot heating assembly or temperature and humidity sensor.
- After resolving the fault, restart the device and re-enter the drying/dehumidification function to confirm whether the corresponding slot can heat up normally.