Checking The Flue System For Unrestricted Flow And Tightness; Checking The External Lpg Safety Valve (If Installed); Matching The Control Unit To The Heating System; Calling Up And Resetting Service Messages - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Checking the combustion quality
Selecting higher/lower heating output
Service menu
1. Press OK and simultaneously for approx. 4 s.
å
2. Select " " with and confirm with OK.
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The display shows "I" and "ON" flashes.
3. Selecting the lower heating output:
press OK, "ON" will be displayed constantly.

Checking the flue system for unrestricted flow and tightness

Checking the external LPG safety valve (if installed)

Matching the control unit to the heating system

The control unit must be matched to the system equip-
ment level.
To do this, select the applicable system scheme. See
■
system examples.
■ Set the codes according to the accessories fitted:
Accessories installation and service instruc-
tions

Calling up and resetting service messages

The red fault indicator flashes when the limits set in
coding addresses "21" and "23" have been reached
(coding address in group 2).
The red fault indicator flashes when the limits set in
coding address "21" and "23" have been reached.
(Coding address in Group 2)
Display
The specified hours run or the specified time interval
with calendar symbol "
ý
Acknowledging a service
Press OK.
40
" (subject to setting) and "
(cont.)
7. Check the CO
2
more than 1 % (CO
given above, carry out the steps on page 39.
8. After testing, press OK.
9. Enter the actual value into the report.
4. Selecting the upper heating output:
press .
ä
5. Select "2" with
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6. Press OK, "ON" will be displayed constantly.
7. Ending output selection:
press .
ä
Note
Various system components are recognised automati-
cally by the control unit and the relevant codes are set
automatically.
For individual coding steps, see page 42.
Service the appliance.
Note
An acknowledged service message that has not been
reset reappears after 7 days.
After maintenance has been carried out, reset the
codes
Reset code "24:1" in group 2 to "24:0".
" Note
¸
The selected service parameters for hours run and
time interval restart at "0".
or O content. If the value varies by
2
) or 1.5 % (O ) from the ranges
2 2
, "ON" flashes.