When no sprinklers operate at all you have a few possible problems.
- Your controller may be faulty
- Your master valve may be faulty
- You may have a broken wire to the master valve
This morning I was working on a job like this in Quinns Rocks. The controller looked fine, but when I checked the master solenoid, the coil had just about exploded, rendering it useless.
The coil is the electrical component and operates by retracting a small steel plunger and allowing water to flow.
A new coil solved the problem and the rest of the system was fine.