ELECTRONIC CONTROL BOARD (PWA) REPLACEMENT
7383718 (Rev. A 12/16/19)
Position markers
(
valve in service)
CAM
MOTOR
1. Unplug the Central Water Filtration System’s power
supply from electrical power.
2. Remove the top cover to expose the valve.
3. Unplug the wiring connections from the back of the
old Electronic Control Board (See Figure 2).
4. Carefully remove the old board by unsnapping it from
its retainer tabs.
5. Carefully snap the new Electronic Control Board into
the retainer tabs.
6. Reconnect the wiring to the new board (See Figure
2).
7. Plug the power supply into the electrical outlet. A
model code and a test number (example: J2.0) briefly
appear in the faceplate display. Then, 12:00 PM and
the words “PRESENT TIME" begin to flash.
NOTE: If “- - - -” shows in the display, press the
r UP
or s DOWN button until “CF 8” shows in the
display. Then, press the PROGRAM button to
set, and change to the flashing “PRESENT
TIME" display.
8. Press the r UP or s DOWN buttons to set the
present time. Up moves the display ahead; down
sets the time back. Be sure AM or PM is correct.
NOTE: Press buttons and quickly release to slowly
advance the display. Hold the buttons down for
fast advance.
9. Press the PROGRAM button a few times, until the
time appears on the display, but is not flashing.
10. For information about programming additional
features of the Central Water Filtration System,
consult your owner’s manual.
11. If the valve is not in Service position, press the
CLEAN button and hold for 3 seconds to start a
Clean Rinse cycle. The display will flash
“RECHARGE NOW.” In 20 minutes the start up
Clean Rinse cycle will be complete and the valve
and electronic control board will be properly oriented
together. Subsequent Clean Rinse cycles will be for
3 minutes.
If you have questions about installation, call
1-800-218-6172
IMPORTANT: BE SURE THE VALVE CAM INDICATES
“SERVICE” POSITION (See Figure 1) WHEN REPLACING THE
ELECTRONIC CONTROL BOARD (PWA), TO ASSURE BOTH
VALVE AND PWA ARE ORIENTED, OR TIMED, TO THE SAME
CYCLE. If the valve is not in Service position, see step 11
below.
NOTE: When installing the electronic control board (PWA) on
the faceplate, use care not to twist the circuit board, or force it
onto the mounting pegs. Twisting could damage the printed
circuits, or break the LED glass.
Figure 1
Figure 3
Figure 2
CLEAN
button
PROGRAM
button
DOWN
button
UP button
Display
Power
Supply
to Valve
Position Switch
to Valve
Motor
Back of Electronic
Control Board
