Faulty "handoff" between sprinkler zones

[Eric Rodriguez]

My sprinkler system has multiple zones. There is a problem in the "handoff" between 2 and 3. When the cycles are run normally, 1 and 2 work great but the pressure to 3 is so low that the sprinkler heads do not pop all the way up. However, if I run 3 manually, the pressure is there and they pop all the way up. How do I fix what appears to be a transition problem between 2 and 3?

 

[Valveman]

Either your valve to 3 is sticking closed or the valves to 1 or 2 is sticking open.

 

[Sponsor]

 

[hj]

Your electric solenoid is either not opening far enough, or the diaphragm has a tear in it so it doesn't open completely. Manual operation can override either of these problems.