Viessmann OC208HM, Service Instructions For Contractors

Page: 30 / 48

C If the display is shown with a deci-
mal point, multiply the indicated
value by 100
D The units described in these
instructions are only equipped
with one compressor
Scanning and changing parameters
Example:
1. In the standard display (see the
overview of the menu structure on
page 28) press "mode"
and "on/off"
simultaneously for less than 2 s.
The next lower menu level will be
shown.
2. With " C " or " D " scroll up or
down through the menu, until the
required parameter group is dis-
played.
3. Press " C " and " D " simulta-
neously for less than 2 s.
The next lower menu level will be
shown.
4. With " C " or " D " scroll up or
down through the menu, until the
required parameter is displayed.
5. To change the parameter, increase
or reduce the value with "
C " or
" D ", or change the option from
ON to OFF or vice-versa.
6. To save the change and to exit the
menu level, press "
C " and " D "
simultaneously for longer than 2 s.
7. To return to the standard display,
repeat step 6 several times, if
required.
Code entry
The access to some of the parameters
in the control unit is protected by a
code.
Menu structure overview
(cont.)
30
Control settings
5692
695
GB