Hunter System Not Working: Valve Boxes Flooded After Storm

Controller works but two valve boxes found, one flooded after storm. Can't tell if valves are on. Need to locate main shutoff and test valves.

Step-by-Step

1. Verify Controller Output: Use multimeter on common and station terminals (22–26 VAC).
2. Check Main Shutoff: Locate where main line enters house (warm climates) or basement/crawlspace (cold). Ensure sprinkler isolation valve is open.
3. Manual Valve Test: Open bleed screw or unscrew solenoid (water off first). If no water, mainline blockage. If water flows, valve works.
4. Master Valve? Check controller for MV/PS wire. If present, master valve must operate first.
5. Wiring: Common wire runs to all valves; hot wires to each. If no valves work, common wire is likely cut.
6. Valve Box Water: Pump out water. Tighten bonnet bolts if leaking at diaphragm seal.