Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Looks like you are using EnergyPlus.
For AirLoop:HVAC, you must have a SetpointManager on the supply outlet node. You may also need setpoint managers on outdoor air components, depending on the options modeled. For example, some ERVs can be controlled to maintain a temperature at their supply air outlet, but in order to do so, they need a SetpointManager on this outlet.
If you can give more details about your AirLoop, such as a one-line diagram including names of each EnergyPlus component, I can give a more detailed answer.
