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

OK...lets start at it from one end and work methodically through to the other.

Why not open the MV manually for a bit so that you know you have water flowing past it. Then, open the problem valve manually. Do you have water?
_____YES: then the problem is either the master valve or the problem valve. Close the problem valve and open it using the controller. Do you have water?
____________YES: Then it seems that the MV isn't working properly
____________NO: Then the problem valve isn't operation correctly

_____NO: remove the solenoid from the problem valve. Do you have water spraying up?
____________YES: The problem is downstream of the problem valve, a pinched or plugged line.
____________NO: The problem is upstream of the valve. Most likely the MV.


Hope this helps

If the problem is after your zone valve, such as a clogged or pinched line, there is a couple of things you can do. First of all, if the zone worked properly this spring, a pinched line is pretty unlikely, but still a possibility. If the line is clogged, you will need to remove the sprinkler heads from that zone and flush the line of any debris. If none of the sprinkler heads pop up at all, you know the clog or pinch is somewhere between the valve and the first head on the zone.