System Won't Water: Check Water Supply First, Then Controller Voltage

All Zones Dead, No Digging Done: Basic Diagnostic Flow

Controller has power, zones show "on" manually, but no water. Water meter shows no leak.

Step 1: The Stupid Check

Is the irrigation main shutoff OPEN? At backflow preventer or pump discharge. Someone may have closed it.

Step 2: Test Controller Output

1. Manual Zone 1 ON. 2. Multimeter: COM + Zone 1 terminals. 3. 22–28 VAC = controller good. 4. 0 VAC = controller bad.

Step 3: Check for Master Valve / Pump Wire

Is a wire on "P/MV" or "PUMP" terminal? If yes, that device (master valve or pump relay) must activate for water to flow.

Need More Info

Reply with: Controller model, valve type, water source (well/city), pump details.