SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

System has 9 zones with Rainbird ESP modular controller. Only two zones have remote valves. One of the other zones is seeping at each head. Any suggestions on what might cause this? So far I have reset the controller and replaced the first head in the zone. Then I ran the zone manually, shut it down, and ran the next in order. When the second ran, the first continued to run also. (Yes, I, too, wish they had installed a valve for each zone when they built the system.)

Thank you, Wet Boots. This is an indoor controller. There is one wire to each zone, and two wires to COM. There are no wires to MV or YT. Also, the rain sensor was not connected so there are no wires there. The only other wires are the 120V connector and the battery back up. I am very sure there are only two remote valves and each only controls one zone. I say that because when I manually turn on the valve only the heads in one zone come on. Also, the wiring in the valve box is only for one zone.
Thank you, also, irrigirl. When I ran the zone after swapping the #1 head, I turned the zone off manually with the controller and then turned the next zone on. Both ran. The only way I have been able to stop the seeping (each head in the zone seeps) is by shutting off the electricity at the pump. This is not on city water but has its own submerged pump in the lake we live on.

The system was installed several years ago and we only know of two remote valves. Each controls one separate zone. I do not know of any way that the other zones can operate without some mechanical apparatus that regulates the water flow to the differing zones. (I do not know of anything that fulfills this purpose other than a remote valve.) Today I have been digging around each of the heads in the problem zone. My thinking is to determine how each head branches from the secondary water line. Then I will try to determine where the main water line intersects this secondary line. I am assuming that if there is a valve it will be attached to this secondary line somewhere near its intersection with the main. Am I on the right track? Does anyone know of any other way for the flow to be regulated without a mechanical apparatus that is electronically activated by the controller? Is there a better (read easier) way to determine the water pathway and/or the location of this activator?