The "NO AC" or "Blank" display is a diagnostic message telling you that the controller has stopped receiving AC power. For the "NO AC" message, the controller is most likely running on the power supplied by the backup battery. Check the power source by plugging a lamp or radio into the wall outlet to verify there is power at the outlet. This video will explain how to program and operate the Hunter PRO-C irrigation timer. This video can be used to program the following Hunter models:X-CORE XC With X2, you can keep the familiar dial-based programming style offered by X-Core. If you upgrade X2 with WAND, programming is familiar, fast, and easy thanks to a helpful setup wizard using a smartphone or desktop device. Hydrawise maximizes water savings by automatically adjusting irrigation schedules based on local weather measurements If your display is blank, unreadable, or if it is showing symbols that do not make any sense, this video will teach you how to troubleshoot the display. If your display is blank, unreadable, or if 2. Clogged sprinkler heads: You may have a clogged sprinkler head if the head doesn’t rise and there is no water. Dirt, sand and other debris build up in the sprinkler head filters. To clean a filter: Turn off your water, lift the pop-up riser, remove the nozzle and the filter, clean the filter and return to the nozzle. 3. Here’s what you should try if your Surface Dial will not fail. First, make sure you’ve followed the pairing steps. You can confirm this by turning on your PC, opening Start Windows logo Controller does not have a start time for each station. Cause - Programming error, dial in incorrect position. Solution - Be sure the dial is in correct position. Total number of stations can be easily checked by placing dial in the RUN TIMES or SET STATION RUN TIMES position and toggle through using the arrow. Return the dial to the RUN position. 7 HUNTER X CORE TROUBLESHOOTING GUIDE PROBLEMS CAUSES SOLUTIONS Too many start times have been programmed The Controller is continually watering Only one start time in necessary to activate a program There is no display Check AC power wiring Correct any errors The display reads "NO AC" There is no AC power 0c9Ba.