Hunter Hydrawise HCC-800-PL Owner's Manual page 55

There are two reasons why sprinklers would continue to run with the controller Off or
Unplugged:
It's possible your valves were opened manually. Locate your valve box(es) and turn the
solenoid(s) clockwise until snug. The solenoid is located on top of the valve and looks
like a cylinder with two wires protruding out of it.
It's also possible that debris in the valve is causing the diaphragm to remain open.
To fix this problem:
1. Disassemble the valve.
2. Rinse all parts with clean water.
3. Reassemble the valve.
If you cannot locate your valves, contact the contractor who installed the system.
Cleaning the Diaphragm on a Hunter Valve
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