Issue
When upgrading a MP-V from v1.xx to a later release the Box Flow reading is zero when there is a velocity pressure.
Product Line
EcoStruxure Building Operation
Environment
SmarX IP controller MP-V
Cause
When a MP-V-7A or MP-V-9A is upgraded from v1.xx to v3.xx firmware. The MP-V does not control and the Box Flow reading is zero. The damper will rotate to 100% with a Velocity Pressure reading.
The Balanced k-factor and the Balance flow correction are found to be at zero:
Resolution
During the upgrade process the flow data is not retained.
Before the upgrade at v1.xx, backup the flow balance data under the Flow Balance Data object,
Continue and complete the upgrade process, re-hosting the controller and downloading the objects.
Finally, restore the flow data.
