Viessmann VITODENS Operating Instructions Manual page 41

Calling up fault messages
1. You can call up the cause of the fault
with OK.
Fault
Outside sensor
Fault
Acknowledge with
2. Pressing ? calls up information on the
heating system characteristics.
Tips on measures you can take your-
self before notifying your heating con-
tractor are displayed.
(cont.)
3. Make a note of the cause of the fault
and the fault code next to it on the
right. In this example: "Outside t
sens 18" and "Fault A2".
This enables the heating contractor to
18
be better prepared and may save you
unnecessary travelling costs.
A2
4. If you want to acknowledge the fault
message, follow the instructions in the
menu.
The fault message is transferred to
OK
the menu.
Display in the standard menu
Boiler temperature
Display in the extended menu
Menu
Fault
Heating
DHW
Solar energy
Continue with
21°C
14°C
Scanning
HC1
48°C
ã
OK
41