[Cause]
Pressure equalizing could not be started.
[Countermeasure]
Before performing other operations (power-off and jogging operations) after this alarm occurs, use the abnormal-condition recording function ("Abnormal Condition Record" in the auxiliary menu) to obtain an image backup and contact the FANUC service center. If the abnormal-condition recording function cannot be used, record the conditions and operating steps leading up to the alarm, obtain an image backup, and contact the service center.