[Cause]
An air pressure abnormality was detected in the system using the air pressure abnormality signal.
[Countermeasure]
1. Return the abnormal air pressure signal to the normal state and press the RESET button.
2. If the air pressure abnormality signal is not used, set the air pressure abnormality detection to disabled on the system setting interface [6 System / Configuration].
3. If the alarm cannot be cleared, it may be caused by a failure of related components. Repair the control device in accordance with the instructions corresponding to the control device used
Take corresponding countermeasures under "Troubleshooting based on alarm codes" in the manual.