Manual
5
General Information
HOW THE ELECTRONIC CIRCUIT
BREAKER WORKS
The controller is equipped with an electronic circuit breaker. If the
controller detects a short circuit, the shorted station (valve) will be
turned off automatically. The display will then flash “
SHORT” and the
shorted station number or “
MASTER VALVE.” The controller continues
to automatically water the other stations and the following watering
programs until the shorted station is repaired. The program will be
cancelled if the master valve circuit is shorted. Each automatic start
will attempt another cycle and retest the short-circuited valve.
Listed below are the most common conditions which will activate the
electronic circuit breaker. After correcting the problem, return the
controller to normal operation as follows:
1. Set the dial to one of the following positions:
Run,
Manual-Single Station
or
Manual-Program Cycle
.
2. Press the
OFF
button to return the controller to the normal
operating mode.
Condition: The word “SHORT” displays with one or more station
numbers.
Diagnosis: One or more stations are shorted.
Solution: Check the wiring of the displayed stations for the cause
of the shorted condition. Repair valve(s) and/or wiring
as needed.
Diagnosis: Too many valves operating at the same time causing an
overload condition.
Solution: Check watering programs for concurrent station
operation. Include master valve/pump start relay if used.
Maximum total output is 24 V a.c. at 1.25 amps.
Reduce the number of stations running at the same
time.
Condition: The word “SHORT” displays without any station
numbers.
Diagnosis: A short circuit has occurred with a time duration too
short for the controller to determine the station.
Solution: Check all valve wiring for breaks in the insulation
which may cause a station output to short to common.
Diagnosis: A transient power surge spike has occurred.
Solution: Reset the controller.
Diagnosis: A short or overload occurred on one watering cycle but
was no longer there on a subsequent cycle.
Solution: Check for loose and/or exposed valve wiring.