Household Aqua-Sensor Sensing Device Troubleshooting Guide; Troubleshooting - Culligan SILVER SERIES Service Manual

The following procedure will help you diagnose problems in units equipped with Aqua-Sensor sensing device.
Because many "sensor problems" are actually regeneration problems, it contains a combination of sensor diagnostics
and routine control valve and brine system checks. Refer to the Troubleshooting Flow chart on page 25 for the
recommended sequence.
CIRCUIT BOARD TEST
1) Identify the circuit board generation (See Fig. 1 for Generation 1, Fig. 2 for Generation 3. There should be no
Generation 2 boards in Aqua-Sensor service)
a) 7 DIP switches & 3 Aqua-Sensor pins – Gen. 1
b) 10 DIP switches & 5 Aqua-Sensor pins – Gen. 3
2) Record program and DIP switch settings before beginning this procedure.
a) For Generation 3 boards determine the slow rinse time of the last regeneration cycle by going to step 15 of
the diagnostics menu (See the Service Manual for the control to determine how to get to step 15).
3) Unplug the unit before changing any DIP switch positions.
4) Remove the Aqua-Sensor cable from the board.
5) Move DIP switch(es) to Test Mode.
a) Gen. 1 – DIP switches 1 & 2 ON, all others OFF
b) Gen. 3 – DIP switch 1 ON, all others OFF
GENERATION 1
6) Connect Aqua-Sensor Tester (P/N 01007999) to board; the white wire should plug on the right most pin of the
connector as you look at the back of the board. Only three of the sockets of the simulator connector will be
used with the colors of the wires from left to right being black, red and white (Fig. 1).
7) Move toggle to Balanced position
8) Plug the control in (motor should not run).
9) If motor runs, replace the board.
10) Move toggle to the Unbalanced position (motor should run).
11) If motor does not run, replace the board.
12) If board passes both tests, board is good.
13) Unplug the control and advance to the probe test.
GENERATION 3
6) Connect Aqua-Sensor Tester (P/N 01007999) to board; wires should be on top of connector with all pins being
connected. The color of the wire on the far left as you look at the back of the board should be white (Fig. 2).
7) Move toggle to Balanced position.
8) Plug the control in (motor should not run).
9) If motor runs, replace the board.
10) Move toggle to the Unbalanced position (motor should run).
11) If motor does not run, replace the board.
12) If board passes both tests, board is good.
13) Unplug the control and advance to the probe test.
OPTIONAL SERVICE TEST
If you wish, you can also test the circuit board in the Service mode (DIP switches in the Service, rather than Test,
position.
1) Follow Circuit Board Test steps 1 through 4
2) Connect Aqua-Sensor Simulator (P/N 01007999) to the circuit board with the toggle in the Balanced position.
3) Plug in the control.
4) Move the Aqua-Sensor Simulator toggle to the Unbalanced position
a) Gen. 1: The circuit board should display a REGEN signal after a 1-minute delay.
b) Gen. 3: The circuit board should display a REGEN signal after a 6-minute delay.
Household Aqua-Sensor
Troubleshooting Guide
Sensing Device
®
AQUA-SENSOR TROUBLESHOOTING GUIDE 23