Question
Rain Dial Model RD-600 There was a power outage,now I can not advance the Multi-Function dial forward (clockwise).
I can go counterclockwise however. It feels as if the dial is stuck and will not turn to zone 1, how do I correct this?

Answer
If you had a power surge and the controller was unprotected, it may have been damaged.  I dont know why the dial will not advance.  Remove all the power supply to the controller and see if you can remove the dial from the face of the controller.  It may just have some debris makng it stick.  When you reconnect the power, try wiggling the knob back and forth a little to see if it will loosen.  Otherwise you can try to have it repaired, but I usually recommend replacing the controller, as it is usually more cost effective.