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WTM210728 57004-24 rD.qx
Using the User-Selectable Rain Delay Mode
To stop automatic watering for 24, 48, or 72 hours, use the
mode button.
With the rotary dial set to
AUTO
troller will force a 24-hour interruption of all scheduled watering. After 24
hours, the controller will automatically return to its initial watering schedule.
To increase the rain delay to 48 or 72 hours, simply press the
button again until the desired delay time is displayed. Press
To cancel the rain delay mode, press
Note: While in rain delay mode, the controller will display the remaining hours
(counting down) to the end of the accepted delay alternating with the current time
and date. No other button besides
the rain delay mode.
OFF
FIGURE 17: Display Showing Rain Delay
Complete System Shut Down
To shut the system down, turn the rotary dial to the
controller remains programmed but will not water.
Smart-Scan® Diagnostic Fault Sensing
A diagnostic fault sensor is built into the electronics of the controller. This
feature will automatically scan for the presence of a faulty solenoid or wiring
short in each station as part of each watering sequence. If the controller sens-
es a short in a station, it will skip the faulty station and move to the next
working station. The controller displays faulty and the faulty station number
[See Figure 18]. If a short is detected in the pump/master control valve ter-
minal, a "P" is displayed under the station number and the watering cycle is
discontinued. Only the last station detected as having a wiring short will be
displayed to the controller.
FIGURE 18: Display Showing Station Fault
At the next scheduled watering sequence, the controller will attempt to water
6/11/01
10:57 AM
RAIN DELAY
, press the
button once. The con-
RAIN DELAY
RAIN DELAY
.
ENTER
[See Figure 17].
CLEAR
will be accepted while the controller is in
CLEAR
DELAY
position. The
OFF
STATION
3
FAULTY
Page 10
the faulty station once more. If a short is not detected, the controller will
continue to water the station and the faulty message will be eliminated from
the display.
In order to cancel the faulty message from the display:
1. First repair the short in the wiring or replace the faulty solenoid.
2. Test the station by operating a manual watering sequence.
3. If the short is not detected after a few seconds, the FAULTY message will
be terminated.
4. If the message continues, a short in the wiring still exists.
The FAULTY message can also be eliminated from the display by turning the
rotary dial.
Internal Auto-Resetting Electronic Circuit Breaker
The controller is equipped with an internal electronic circuit breaker. Unlike
a mechanical circuit breaker, the internal circuit breaker has the advantages
of being more temperature stable, having a higher degree of sensitivity, and
resets automatically. In combination with the diagnostic
fault sensing, the internal electronic circuit breaker adds real value to your
controller. The batteries will maintain program data in the event of a circuit
breaker trip. We recommend that you replace the batteries annually.
The internal circuit breaker will "trip" whenever the controller receives a high
current spike. This might occur in the following situations:
1. If lightning strikes nearby.
2. When the power supply has an electric spike.
3. If a station has a wiring short.
Whenever one of these conditions occurs, the electronic circuit breaker
may "trip" causing the station output from the controller to be halted
momentarily. The batteries will continue to store the program information
and activates the LCD. After a few moments, the controller will automatically
retest the circuit to see if the condition has stopped. In most cases,
the problem causing the current spike has stopped (lightning strike stopped,
power supply spike over, or the diagnostic fault sensor has switched to a
non-faulty station). If so, the electronic circuit breaker will reset itself. It is
necessary to reset the controller manually.
NOT
8
s e
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