Merry, When you said you couldn't turn it on manually was that from the manual button on the controller or manually by slightly unscrewing the solenoid at each valve? Can you find the electrical connection points for each solenoid wire? Is there water in the valve boxes? After manually turning on all the zones at the solenoids and you are successful with that method, remove and reconnect all the terminals wires in the controller. Let me know what happens and we can continue from that point. The more precise description you can give the better. Aloha.

I just replaced this controller and I still have the book. it says the "ISA 300/400 series" on the booklet and I had the 304. the only difference is the 400 series allows for an optional pump start relay for well water source and 2 different programs. I think you probably were looking at the same book that came with your timer. the "system on" is the same as "auto run". You can check your programmed input from the "preprogrammed schedules" selection on the dial by using the arrows to cycle through the settings but you can't make any changes to the schedule from that position. I had a lot of problems programming this timer, it's not self explanatory, at least not to me. When you select the pre programmed schedule you want, you have to lock it in by pressing the last button with the round black dot. then the square around the letter or number of the scheduled program you chose will be solid instead of flashing. if you don't need to modify the preprogrammed schedule, once you lock it in just turn the dial to system on and that's it. you have to leave the dial at "system on" or it will not run the program. pay attention to the small words at the top and bottom of the screen. it's easy to confuse the start time numbers with the station numbers as there are 3 start times per day available, so if you are entering the start time and you enter the same time 3 times thinking you are entering for 1,2 and 3, the system will start at that time and run 3 complete cycles. When you run the system manually, do the zones run for the length of time they are programmed to run? for me the last straw was the timer tripping the gfi outlet. took me a while to figure out why the system came on one day but not the next til I realized (read) the screen message. the screen looked like always, date/time and station etc but there was a message "ac off" on the screen also, not blank or flashing like the book says. the power was lost so it was only functioning on the battery which saves the setup info but will not run the system. So I bought a new timer, much easier to use. And it also trips the gfi ! so now I have a much bigger problem apparently. I still have the book for my rainbird 304 if you need any more info, but I'm pretty sure it's the same book you found on the internet. the picture on the front is of the 408, but the book says it's for the 300/400 series. the phone number for technical support is 1-800-247-3782 good luck.

The timer has power? Do you have a rain sensor? If so has it rained in the past day or two? Is your outlet for the controller on a GFI? Any yard work since the day it worked? Does the timer display normal functioning but the zones are not working? Here is a link that might be useful: lawn sprinkler troubleshooting

I would not tap into any low voltage in the panel if you want to keep your warranty. This is the way I've done it in the past. Take your existing sprinkler timer transformer and plug it into the gfi on your i7. with the power off, connect the transformer wires to the line side of a relay. Then connect the valve wires to the load side of the relay. This creates a 24v circuit to be controlled by the i7. Program the i7 to the water time. Revision O on the Jandy actually has a sprinkler module you can install so if anybody is looking for that in a new system, they have it. From a tech standpoint, it seemed a bit complex to diagnose when it fails though.