47
Troubleshooting Guide
Problem Possible Cause Solution
No display. AC power not reaching controller.
Blown fuse.
14-pin ribbon-cable connector is not fully  
connected. 
Check and x AC power supply to controller.
Check fuses. Determine why blown and replace if  necessary.
Check ribbon cable connections on bottom of unit.
Controller does not irrigate as 
scheduled.
Programming error.
Time and date error.
Sensor is shutting down system.
Station Alarms set.
Verify programming information with Central or In Display.
Very time and date.
Remove sensor, clear, and retest.
Look for alarms. Correct issue if  set, and clear alarms. 
Water does not turn ON. Programming error.
Faulty valve wire connections.
Bad / defective solenoid or valve. 
Flow control or water shut off.
Verify programming information with Central or In Display.
Look for alarms. Correct issue if  set, and clear alarms.
Test for 24 VAC from Station Post to Common or Ground with  
Manual switch on.
Check ow control valve and water supply line.
Water does not turn OFF. Programming error--too many start times.
Bad / defective solenoid.
Valve blockage.
Verify programming information with Central or In Display.
Test for 24 VAC from Station Post to Common or Ground with  
Controller running and/or Manual switch on.
Check for cross connections between stations.
Shut off  power at controller. If  station stays on, isolate and troubleshoot 
valve. 
Rain sensor does not shut down 
system.
Programming error.
Faulty sensor or faulty sensor connection.
Verify programming information with Central or In Display.
Verify and reset.