Troubleshooting Guide - Toro Sentinel Programming Manual

Troubleshooting Guide

Problem
No display.
Controller does not irrigate as
scheduled.
Water does not turn ON.
Water does not turn OFF.
Rain sensor does not shut down
system.
Possible Cause
AC power not reaching controller.
Blown fuse.
14-pin ribbon-cable connector is not fully
connected.
Programming error.
Time and date error.
Sensor is shutting down system.
Station Alarms set.
Programming error.
Faulty valve wire connections.
Bad / defective solenoid or valve.
Flow control or water shut off.
Programming error--too many start times.
Bad / defective solenoid.
Valve blockage.
Programming error.
Faulty sensor or faulty sensor connection.
Solution
Check and fix AC power supply to controller.
Check fuses. Determine why blown and replace if necessary.
Check ribbon cable connections on bottom of unit.
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.
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 flow control valve and water supply line.
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.
Verify programming information with Central or In Display.
Verify and reset.
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