All Sprinkler Zones Dead: Controller Reset & Valve Flow Check

Four Zones Suddenly Stop: Controller, Wiring, or Valve Flow Control?

Symptoms: Display works, hum from Valve 1 only, manual bleed releases water at valve but no sprinkler flow. Power outage yesterday.

Step 1: Controller Hard Reset

1. Turn controller OFF. 2. Remove AC power + battery. 3. Wait 5 minutes. 4. Restore power, reprogram, test.

Step 2: Check Valve Flow Controls

Each valve has a flow control stem (screw/handle on top). If turned fully clockwise (closed), valve won't open even with power. Turn counterclockwise 3–4 turns.

Step 3: Verify Wiring

• Common wire connected at controller "COM"?
• Zone wires on correct terminals?
• Wire nuts tight at valve box?

Why Manual Bleed Didn't Spray

Bleed screw releases water from the valve body, not the sprinkler line. If flow control is closed, no water reaches heads.

If Reset Fails

Test 24 VAC at controller terminals during zone run. No voltage = controller failure. Voltage present = field wiring or valve solenoid issue.