Troubleshooting - Viessmann VS 34 Owner's Manual

AUTOMATIC ELECTRONIC DIAGNOSTICS
This softener has a self-diagnostic function for the elec-
trical system (except for input power and/or water
meter). The controller monitors electronic components
and circuits for correct operation. If a malfunction
occurs, an Error code is displayed (See Figure 85).
Error detected
Error code: 1
The troubleshooting chart on the previous page shows
the error codes that could appear, and the possible mal-
functions for these codes.
When an error code appears in the display, pressing
OK / MENU will display the Diagnostics screen (See
Page 21), so a service technician can further isolate the
problem.
REMOVING ERROR CODE
1. Unplug power supply from electrical outlet.
2. Correct problem.
3. Plug in power supply.
4. Wait for eight minutes while controller operates valve
through an entire cycle. The error code will return if
the problem was not corrected.

TROUBLESHOOTING -

MANUAL DIAGNOSTICS
1. Display the Diagnostics screen, following the proce-
dure on Page 21.
2. Press the DOWN q or UP
through the list. The following items are displayed:
Time (current)
=
Position time (counts down the time remaining
=
in the current valve position)
Current position (of the valve: service, fill,
=
brine, backwash, fast rinse or moving) See
"Manual Advance Recharge Check" on next
page for position verification.
Requested position (of the valve)
=
Motor state (on or off)
=
Valve position switch (open or closed)
=
Turbine count (indicates water flow) See fol-
=
lowing section for turbine diagnostics.
Tank light switch (open or closed)
=
Error code
=
Troubleshooting
FIG. 85
buttons to scroll
CHECKING THE TURBINE
1. Display the Diagnostics screen, following the proce-
dure on Page 21.
2. Press the DOWN q button to scroll through the list
until Turbine Count is displayed (See Figure 86).
Diagnostics
3. A steady display of "0" (zero) indicates no water flow
through the meter (i.e. no softened water being used).
4. Open a nearby softened water faucet.
5. The number in the display should count upward from
0 to 199 for each gallon of flow. 1 gallon = 3.78
liters.
6. If the display reading does not change with the
faucet open, pull the wire harness from the valve out-
let port (See Figure 87).
Motor
7. Pass a small magnet back and forth in front of the sensor.
8a. If the displayed Turbine Count does count upward
with each pass of the magnet, disconnect the outlet
plumbing and check the turbine for binding.
8b. If the displayed Turbine Count does not count
upward with each pass of the magnet, the sensor is
probably faulty.
26
Turbine count:
0
Tank light switch:
Open
Position
Switch
Sensor
Housing
Turbine
Valve Outlet
FIG. 86
Turbine
Support
& Shaft
FIG. 87