Using the TAC I/A BACnet WorkPlace Balance Tool to balance a VAV, when requesting the box drive to Maximum flow, get error "Controller was temporarily busy. Please restart this balancing step” message.
What does this mean and how to solve it?
TAC I/A Series
BACnet WorkPlace Flow Balance Tool
Multiple tools connected to the same VAV controller.
"Controller was temporarily busy. Please restart this balancing step” message means one of two things – One tool has control of the VAV while another is attempting to connect or the VAV is in the process of completing a balancing step while another balancing function is attempted.
Flow balancing should be accomplished with a single tool connected to a VAV controller.