One of the following problems is occurring with flow arrows:
1) Flow arrows are showing even though they are turned off in Element Symbology
2) The flow arrows on pipes or conduits in a model are pointing in the wrong direction.
For the storm and sewer products, first make sure that the start and stop nodes are correct. For the water products, note that a negative flow indicates that the flow is opposite to the orientation of the pipe (per the start and stop node designation).
For a pipe whose flow arrow is pointing in the wrong direction (not the actual direction of flow), try the following:
For the case where flow arrows show even though they are disabled in element symbology (show flow arrows = false), there is a known issue (reference #779863)that can cause this to occur when switching scenarios, when there are active topology changes between the scenarios. The workaround is to toggle the "show flow arrows" option in element symbology twice (turn it on and then off again). This issue has been resolved starting with CONNECT Edition Update 1 of the water products (10.01.00.72). See this article for how to update.
How can I remove or display pipe flow arrows?