80 ESP-LX Modular Controller
SYMPTOM POSSIBLE CAUSE CORRECTION
Display shows a valve
operating, but no watering
occurs. (cont’d)
9. No valve is connected to the terminal on the
controller.
Use “Confirm Programs” (see page 54) to check the run
time set for the valve. If no valve is connected, set the
run time to “0:00.” See page 24.
Valve does not come on. 10. No run time has been set for the valve. Use “Confirm Programs” (see page 54) to check the run
time set for the valve. To add a run time, see page 24.
11. Water pressure to the valve has been interrupted. Make sure the valve has water pressure.
12. A short or open circuit in the solenoid or valve
wiring has disabled the valve. (The ALARM light is
lit.)
Run the RASTER test (see page 63) to see if the valve
fails open or short. Identify and repair the fault in the
circuit. Then start the valve manually. See page 50 for
instructions.
13. Sensor is preventing irrigation. See correction for Cause #7.
14. Watering start time has not been entered for the
program to which the valve is assigned.
See correction for Cause #2.
15. Seasonal Adjust for the valve’s program is set to
0%.
See correction for Cause #6.
Display shows “NO Power.” 16. No power is being supplied to the controller. Verify that the controller is plugged into a working outlet.
Check the main power supply to the controller.
17. PTC fuse is open. Disconnect the controller from its power source. Identify
and repair the circuit fault that caused the fuse to blow.
Reconnect power to the controller.
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