The Hunter controller has a re-set button on the back of the controller panel. Take out the battery & test it, replace/or put it back. Push & hold the re-set button for a few seconds (4-5, 10 whatever) Shouldn't have to power down the whole thing for hours, that's BS. But I think you'll have to insert a loop into the sensor terminals otherwise the controller will think the sensor is activated. I'm gonna have a shot of Blinker Fluid and call it a day.