Question
Hello, If I want to reprogram the DDC-4 controller, what is the correct procedure to do it? I tried to do reset first, then PE(erase the old program), then reprogram. I set time/day, run time, water days and start time in sequence. everty thing seems ok. but the sprinkler system does work. When I tried manual way, I can see the time counts in each station, still sprinkler system didn't work. looks the program didn't triger the valve. where is the problem?

appreciate your kind help.

Joanna

Answer
Hi Joanna

Did you disconnet any wires? Make sure all the wires are connected, the white wire goes to the C terminal. If you don't have a rain sensor there sould be a jumper on the sensor terminals.

Just in case the instructions:
PROGRAMMING:
It is recommended to press the RESET button to clear the memory.
Press DIAL to advance to SET TIME/DAY
Dial Position: SET TIME/DAY
Set the current YEAR, MONTH, DAY & TIME.
Set the YEAR with +/ON or -/OFF
Press NEXT
Set the MONTH with +/ON or -/OFF
Press NEXT
Set the DAY with +/ON or -/OFF
Press NEXT
Set the TIME with +/ON or -/OFF
Press NEXT if you wish to go back to YEAR setting.
NOTE: If you press and hold either +/ON or -/OFF continuously, the digits
will advance more quickly.
Press DIAL to advance to RUN TIME
Dial Position: RUN TIME
The DDC has 3 independent programs: A, B & C. Program A
has an initial start-up program with each station set for a 5 minute run time and
a 0400 (AM) start time. This initial program can be erased by following the
揚rogram Erase?function described on page 10 or it can be modified by following
these programming steps.
Press PROG to select the program to be set.
Press +/ON or -/OFF to set the desired RUN TIME for the first station. Run time is
in one minute increments from 1 minute to 4 hours.
Press NEXT to advance to next station.
Continue to assign stations to a program by entering RUN TIMES for those
stations. Unselected stations in a program will remain OFF.
Enabling/Disabling MASTER VALVE
After the last station is the MASTER VALVE position. The display will show 揙N?
To disable the master valve/pump start for this program, press -/OFF. Press +/ON
to resume master valve/pump start operation.
NOTE: To turn off a station which has previously been programmed, press
both +/ON and -/OFF buttons and hold them for a few seconds.
Use this option if you have a station with RUN TIME and you want this station to
be OFF or if you have a start time and you want to cancel it (set it to OFF).

Dial position: WATER DAYS
There are 4 choices for your days selection:
CAL - Select days of the week. (All days are ON as the default)
Int - Select days interval, 1-7 days, and the 1st day to start the interval
Odd - Irrigation on Odd days (31st day is skipped)
En - Irrigation on Even days.
In CAL position: Press +/ON for operating day or -/OFF to skip the day.
Press NEXT for Interval selection or DIAL for next
programming step.
In "Int" position: Press +/ON or -/OFF to select the watering day interval.
Press NEXT to select the 1st day to start the watering (using
the +/ON or -/OFF buttons).
In Odd position: Press NEXT to select Even days or DIAL.
In Even position: Press NEXT if you wish to go back to CALENDAR.
Press DIAL to advance to START TIME.
Dial position: START TIMES
3 start times per day are available for each program. (A, B or C)
Press +/ON or -/OFF to set the first start time.
Press NEXT for start 2 and use +/ON or -/OFF to set the time.
After setting start times, you can Press PROG to start entering data for another
program. The Dial position will automatically move back to the RUN TIME position
for that program.
Note: Start times are stacked to avoid operating more than 2 solenoids at a
time and exceeding the power output of the transformer.
Note: To reset the START TIME back to OFF press +/ON and -/OFF buttons
until display shows OFF.
Press DIAL to advance to the ? Scaling?position.
Dial position: % SCALING (Seasonal adjust)
In this dial position you can increase or decrease the RUN TIME of all
stations in that program by percentage scaling from 0% to 200% in 10%
increments.
Press PROG to select the program you wish to scale.
Press +/ON or -/OFF to change.
The Initial RUN TIME represents 100%. The controller will record the change, i.e.,
if a program was scaled down to 80%, next time you enter this dial position the
display will show 80%.
To set a program to "OFF"
If you wish to stop irrigation of a program, set percentage scaling to 0%.
The display will show that program is OFF.
To resume normal operation of that program, Dial to "% SCALING" and increase
the percentage to your desired value. Increasing to 100% will set RUN TIME to its
original value.
Press PROG to select the program.
Press DIAL to advance to MANUAL.
Dial position: MANUAL
The MANUAL mode allows immediate customized irrigation on one or more
zones. You can set an individual RUN TIME for each of the stations you wish to
start manually. The controller has a "programmable manual" function, so if you
manually operate more than one station, they will open in sequence.
Press +/ON or -/OFF to set the station RUN TIME.
Press NEXT to advance to next station.
To turn ON the 1st station in the sequence:
Press DIAL to AUTO-RUN position.
Press -/OFF (in AUTO-RUN position) to turn OFF the sequence.
All stations with a manually programmed RUN TIME will be displayed. Operating
stations will flash and the display will show the remaining RUN TIME of the station
(count down)