What is the meaning of the notification “Valve cannot deliver flow”, with regards to a Flow Control Valve (FCV)?
This simply means that the flow through the valve is less than the setting that you entered, so it is inactive. Note that a FCV does not set the flow; it limits it. If the flow through it is showing up as greater than the setting, then this could mean that the orientation of the valve is incorrect. Check the “downstream pipe” property of the FCV. This is due to the flow reported at the valve having a negative sign in front of it – an FCV will not limit negative flow, even though this just refers to the direction of flow.