The NO or NO AC display is a diagnostic message telling you that the controller has stopped receiving AC power. The controller is 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.Click to see full answer. In this manner, why does my orbit sprinkler timer says off power?This can be caused by: • Disconnected power supply. A blown fuse (in some models). Programming Note: To conserve water, Orbit® timers are equipped with a rain delay feature.Furthermore, how many zones do I need for my sprinkler system? The resulting number will equal how many zones you need. If, for example, each sprinkler head will require a flow rate of 1.31 GPM and you have 20 of them, then you will need 26.2 GPM total. If your system can only handle 16.67, you will need to use two zones to cover that same area of your yard. Similarly one may ask, how do I reset my hunter core? Press and hold the Programs button, and at the same time press in the recessed Reset button with the tip of a ball point pen. Release the Reset button and continue holding the Programs button until the Reset Memory screen appears (then release the Programs button).How far can you run sprinkler wire?Most manufacturers include recommendations about what wire size to use with their valves, but typically, you can use 18-gauge wire if the length of the wire (not the distance) from the controller to the valve is less than 200 feet, and it’s being installed as a residential system.
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