Rain Bird RC-1260BI: Zones Won't Activate, Clock Runs

Troubleshooting No Zone Output on RC-1260BI

The clock runs and you hear the motor, but no zones activate. This points to the output stage or field wiring.

Step-by-Step Diagnosis

1. Check the fuse (usually a 1 A or 2 A glass fuse on the controller board). Replace if blown.
2. Manual advance test: Rotate the program wheel to station 1. Does the wheel advance on its own?
   • If it advances but zone doesn't run → field wiring/solenoid issue.
   • If it doesn't advance → advance motor or gear train failure.
3. Voltage test: With station 1 active, measure 24 VAC at controller terminals (Common to Station 1).
4. If voltage present, check at the valve solenoid. If absent there, trace wire for break.

Common Failures

• Shorted solenoid blowing the fuse repeatedly.
• Corroded common wire connection at the valve manifold.
• Worn advance motor (see Article 4620 for replacement).