Display works (9V battery), but 0.02V at transformer wires. Should be 22–26 VAC. Transformer dead. Test zone voltage at terminal strip: zone to common → 22–26 VAC? If not, replace transformer.
Hunter Controller Voltage at Terminals but Not at Valves: Open Circuit in Field Wiring
Toro Greenkeeper 212: Low Pressure & Wrong Zone Order
Zone 2 Works Without Pump, Fails With Pump – Relay Interference
4-Zone Sprinkler: Zone 3 Dead, System Cycles Endlessly
Rain Dial System Won't Start: Verifying Water Supply and Valve Operation
Rain Bird E-9 Controller Dead After Power Outages: Reset and Diagnostic Steps
Rain Jet RJC-66 No Operation: Systematic Checks or Replace Controller
Irritrol RD-900: Controller Clicks But No Zones Activate
Toro ECx Loses Programs A & B—Only Program C Shows
Hunter XC Station 1 Won't Activate from Controller—Valve Works Manually
Sprinkler Station Not Working: James Hardie HHA-11272 Controller
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