Viessmann Vitodens 200 Service Manual page 59

Test settings "T 1" and "T 2"
Changing parameters in service positions "S 1" to "S 7"
Changing parameters in service positions "S 1" to "S 7" influences the control
unit and system parameters.
The following steps for changing parameters apply to all service positions.
T 1 Heating operation with lower
rated output
T 2 Heating operation with max.
set output
Please note:
In test position "T 2", the fault
memory will also be displayed.
1.
The display shows: "B B B "
The current parameter will be
displayed after approx. 2 sec.
2.
The maximum value flashes in the
display.
Please note:
If rotary selector "w" is positioned to
the right of the central position, turn it
first anticlockwise beyond the centre.
3.
The minimum value flashes in the
display.
4.
w
5.
The value is now saved.
w
w
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