*PLUMBERSSTOCK EXPERT* responded:
Good question! This Honeywell M7285A1003/U is a spring return actuator that is used to control dampers and valves. This motor accepts a current or voltage signal from an electronic controller to position a damper or valve at any point between open and closed. It should be able to respond properly to the input provided by the controller (given that the installation is correct and all requirements are met). If it doesn't, then, there might be a problem and although it's quite unclear yet at this point, it could be a faulty controller. To get more technical assistance, it would be best to contact Honeywell at 888-793-8193. You can also check with them if your product is still under warranty. To learn more about this Honeywell spring return actuator, here is it's Operation and Specification Manual. Hope it helps!