December 2021
Service Manual
MDE 252 Rev. 1
Troubleshooting
12
Section 2: Troubleshooting
2.2.9 Alarm on Local Display: Mid Travel Alarm in Opening
MID TRAVEL ALARM IN OPENING
1. The actuator moves in opening direction but during the travel the operation is suddenly stopped.
2. The actuator can operate in closing direction. An electrical command in close direction clears the alarm.
Check in sequence:
1. Increase the parameter "valve jammed time" in the actuator setup, miscellaneous routine
(refer to VCIOM-08500).
2. Verify that the manual override is disengaged.
3. Verify the mechanical integrity of the shaft of the position sensor.
4. Verify the integrity of all the mechanical parts composing the transmission, from the electric motor to
the worm shaft.
5. Check the valve, it could be blocked by an obstacle that obstructs the opening manoeuvre.
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