Viessmann Vitocal 300-G Installation And Service Instructions Manual page 117

Control unit diagnostics
Overview of the programming unit
A Standard display
B Rotary selector
"Reduced room temperature"
C Rotary selector
"Standard room temperature"
D Operating mode selector
E "Standard display" key
F Menu keys
Note
For descriptions of individual steps to
call up parameters and illustrations
the display must be in standard dis-
play mode.
Messages
Messages are grouped, displayed and saved in 3 categories (see from
page 120):
G No function
H Display area for current operating
conditions
K Message display area
L Set temperature display area
M Enabled system components dis-
play area
Standard display
Display during system operation
In daily use, the complete list of
symbols will never all be shown in
its entirety.
These symbols appear subject to
the system version and the operat-
ing state.
Troubleshooting
117