Viessmann VITOTRONIC 200 Service Instructions Manual page 92

Troubleshooting
Diagnosis (service scans)
Service menu:
1. Press OK + å simultaneously for
approx. 4 s.
2. "Diagnosis"
3. "Brief scan"
For an explanation of the relevant values on the individual lines, see the fol-
lowing table:
Line
1
1 Heat pump control
unit:
Software version (SW
index)
2 System scheme
3 0
4 0
5 0: No
external
demand
1: Exter-
nal
demand
6 Number of LON sub-
scribers
92
(cont.)
2 3
Device: Version
Coding card: ID Low
Number
of KM
BUS sub-
scribers
Program- Exten-
ming unit: sion for
Software heating
index circuit
with
mixer
M2/M3:
Software
version
0 0
0: No 0
external
blocking
1: Exter-
nal block-
ing
Check
digit
Brief scan
Ü
1:
1 F 0
2: 0 0 0
3: 0 0 0
4:
0 0 0
Select with
Field
4
Coding card: Version
Common demand temperature
Solar con- LON
trol unit: module:
Software Software
version version
0 Appliance type
External hook-up 0 to 10 V
Display in %
0: No external hook-up
0 0
A 1 2
0 0 0
0 0 0
0 0 0
(
5 6
External
exten-
sion H1:
Software
version
0