Issue
When balancing a MNB VAV box with WorkPlace Tech Flow Balance tool it fails when starting the "Maximum flow" function with an error that states "Unable to read previous balance values."
Product Line
TAC IA Series
Environment
- MNB VAV
- WorkPlace Tech
Cause
This error indicates there is invalid data in the memory location where the balance data is stored.
Resolution
To clear the error:
- Open the WorkPlace Commissioning tool
- Select the VAV box in question and launch the flow balance software from the WorkPlace Commissioning tool. Balance page opens.
- Click on "Balance Data" in the left column.
- On the "Flow Balance Details" window, click on the "clear" button
- Click OK.
- Start the Flow Balance process again.