Kenmore 625.3486 - Manual (Page 21)

SECTION 5
SERVICE TECH INFORMATION
5A. TROUBLESHOOTING
AUTOMATIC ELECTRONIC DIAGNOSTICS
The faceplate timer (PWA) computer has a self­
diagnostic function for the electrical system, ex­
cept for input power and water
meter. The computer monitors
the electronic components and
circuits for correct operation, if
a malfunction occurs, an error
code appears in the faceplate
display.
The chart below shows the error codes that could
appear, and the possible defects for each code.
While an error code appears in the display, all face
plate buttons are inoperable except the SELECT
button. SELECT remains operational so the service
person can make the MANUAL INITIATED ELEC­
TRONIC DIAGNOSTICS (below) to further isolate
the defect, and check the water meter.
CODE
POSSIBLE DEFECT
MOST LIKELY _ _ LESS LIKELY
-------------------------- -------------------------------------►
Erri motor inoperative / wiring harness or connection to switch / position switch / face plate timer (PWA)
ЕггЗ motor / facepiate timer (PWA) See faceplate timer (PWA) replacement
on page 22.
Err4 timer (PWA) / position switch
Errs facepiate timer (PWA)
PROCEDURE FOR REMOVING ERROR CODE FROM FACEPLATE: 1. Unplug transformer 2. Correct
defect 3. Plug in transformer 4. Wait for 6 minutes. The error code will return if the defect was not corrected.
MANUAL INITIATED ELECTRONICS
DIAGNOSTICS
1. To enter diagnostics, press the SELECT button
and hold for 3 seconds.
You will see the following display, showing valve
cycle position, position switch status (open or
closed), and turbine operation.
valve position indicator
-d-
n nn
и uu
Л:
WATER FLOW
turbine count (wa­
ter flowing)
position switch
Indicator (open) turbine count (no
water flowing)
TURBINE OPERATION: If no water is flowing
through the softener, the turbine indicator displays
3 zeros. When water is flowing, the flow bar scrolls
across the display, and a 000 to 140 count repeats
for each gallon of water passing through the
turbine. To check for positive operation of the
turbine if zeros are shown, open a nearby soft
water faucet and observe the turbine count and
flow bar.
If you don't get a reading in the display, with facuet
open, pull the sensor from the valve outlet port.
Pass a small magnet back and forth in front of the
sensor. You should get a reading in the display. If
you get a reading, unhook the in and out plumbing
and check the turbine for binding.
POSITION SWITCH STATUS: With the valve in
service, or any of the recharge cycles, the switch
indicator will show open . While the valve is
rotating from 1 position to another, the indicator
will show the switch closed
A defect is
probable if indications vary from this pattern.
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