Viessmann VITODENS 200-W Service Instructions Manual page 90

Diagnosis and service scans
Diagnosis
(cont.)
For explanations of individual scans, see the following table:
Brief scan
0 Switching
state of
flow switch
(only for
combi boil-
ers)
1 Software
version
Solar con-
trol module
SM1
E
3
A
4
5
b Diverter
valve sta-
tus
0: not
installed
1: Heating
2: Central
position
3: DHW
heating
C
c
90
Display
System Software version
schemes 1 Control unit
to 2
Software version
Burner control unit
External hook-up 0 - 10 V
Display in °C
0: no external hook-up
Set boiler water temperature
Highest demand temperature
Burner control unit type
Set cylinder temperature
Max. output in %
Boiler coding card (hexadecimal)
Version
Appliance
Software
version
Program-
ming unit
External Software
extension version
software Multi-boiler
version control unit
0: no exter-
nal exten-
sion
Appliance type
Version
Burner control unit