10
TROUBLESHOOTING GUIDE
SYMPTOM
CAUSE
CORRECTION
Display shows "Err"
1.
The automatic circuit
breaker has found an elec-
trical problem.
The "Err" in the display indicates a short cir-
cuit or an electrical overload on a particular
station. The station's number should also be
displayed; for example "2 Err" means the
problem is in Station Two's circuit.
Usually, the short circuit is in the solenoid on
the electric valve, but short circuits can also
occur in the wire connectors at the valve.
Occasionally, nicked or "skinned" field wires
can cause a short. A large pump start relay
can also produce a momentary overload that
may be detected by the controller.
Locate and repair the cause of the short cir-
cuit. See the "Diagnostic Circuit Breaker" on
page 9 for instructions on clearing the prob-
lem indicator from the display and testing
the station.
Display shows "Err" for a few sec-
onds and then the station in opera-
tion for a few seconds.
2.
Same as Cause #1.
See correction for Cause #1.
Display is blank.
3.
Power is off to the con-
troller
4.
If the controller is still
receiving power, an electri-
cal surge exceeding the
controller's built-in surge
protection may have dam-
aged the controller's micro-
processor.
Re-establish power to the controller. If the
current time is not shown or your program is
no longer in the memory, reprogram the
controller.
Open the lower access cover and erase all
programs as described on page 9.
If the display remains blank, the controller
may be permanently damaged.
In the U.S.A., Call 1-800-247-3782 for a ser-
vice referral.
Display shows numbers and let-
ters, but is not counting or advanc-
ing.
5.
Same as Cause #4.
See correction for Cause #4.
Watering will not start.
6.
Programming incom-
plete.
7.
Sensor function may be
preventing irrigation.
8.
Water supply may be
shut off.
Check to see if:
• program start time is correct
• stations are assigned to the program
• the date and time are correct in the display
• AM and PM settings are mixed up
• the dial is set to OFF instead of AUTO
Set sensor switch to OFF position and man-
ually start a station.
Check to see if water supply line has pres-
sure.
Watering will not stop.
9.
Programs may have ac-
cidentally been set to over-
lap.
10.
A valve is stuck in the
open position.
Check to see if another program's start time
came due during the previous program's cy-
cle. The overlapped program would immedi-
ately follow the earlier one. Change pro-
gramming if necessary.
Turn dial to OFF and wait 10-20 seconds. If
the irrigation does not stop, shut off the
valve manually and repair the valve.
