User's Guide

22
Problems Probable Cause Remedy
Display is blank and controller
does not operate.
Power is disconnected. Check transformer connections.
Check the AC service panel for a tripped circuit breaker or
GFI and reset.
Display not responding to
commands (frozen).
Microprocessor stopped. Press reset with a pointed tool (clip through the hole
below the LCD display.
Valve does not turn on. Faulty control valve wire connections.
Sensor switch in Active position without a sensor or
jumper installed.
No station run time duration set.
Check the wire connections at control valve and controller.
Set sensor switch to Bypass position.
Check station run times.
Valve does not turn o. Control valve problem. Inspect, clean and/or replace the valve solenoid and/or
diaphragm.
Watering program(s) start at
unexpected times.
Watering program schedules have overlapping start times.
Water budget setting over 100% can cause delayed start
times.
Check program start time schedules. Shorten station run
times and/or space start times farther apart.
Check water budget and decrease adjustment % factor as
necessary.
Toro TEMPUS Controller
TROUBLESHOOTING