Service manual

CULLIGAN HOUSEHOLD & COMMERCIAL CIRCUIT BOARDS
13
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Failure Mode
The Culligan Mark 100 control is equipped to detect a motor or piston which is locked ina frozen position. The
AccuSoft
™
circuit board will apply power to the motor for 30 seconds. If there is no change in the motor homing or
piston switch, the control will power-down for 90 seconds.
The circuit board will repeat this procedure two more times in an attempt to remove the obstruction. If no move-
ment has been detected, the power will be shut off to the motor and the display will read “CS” (Call Service). To
return to the service mode, turn power off to the unit for one full minute and remove the obstruction to the motor or
the piston.
Board Diagnostic
To enter the board test mode, shift the Aqua-Sensor
®
sensing device and the Soft-Minder
®
meter dip switches (#1
and #2) to the ON position (upwards). The display will initially light up all segments until either a key is depressed,
an option is changed, or a CAM microswitch changes position. Pressing one of the keys, closing a microswitch, or
turning on a dip switch will light a different segment as outlined in table 3.
For units equipped with a flow meter, a water
flow will cause the 1-7 segments to light individ-
ually in a sequential order. The faster the flow
rate, the quicker the sequence.
A balance signal should be applied to the Aqua-
Sensor
®
pin connector. This can be done with a
set of resistors or with a clean Aqua-Sensor
probe and a fully regenerated bed.
An unbalanced signal will cause the drive motor
to run continuously. A balanced signal will cause
the motor to stop.
This test can be used to check the integrity of
the Aqua-Sensor probe. If the probe is connect-
ed to the board and the drive motor runs contin-
uously, the probe should be cleaned and
checked.
Turning on two DIP switches other that DIP
switches 1 and 3 will cause a dash followed by
a number to appear. This ia the version number
of the software contained in the microprocessor.
Table 3
Action Segment
Status Key “Low Salt”
Up Key “Regen”
Down Key “Flow”
Regen key “Last”
Close Program Switch “Set”
Close Homing Switch “Regen”
Dip Switch 3 “1111”
Dip Switch 4 “222”
Dip Switch 5 “333”
Dip Switch 6 “444”