84
3.
Enter
"viservice"
password.
4. "Change passwords"
.
5. "Service, level"
or
"Parameter level 2"
6.
Enter current password.
7.
Confirm with
OK
.
8.
Enter new password.
9.
Tap
OK
twice
Resetting all passwords to their delivered condition
Tap the following buttons:
1.
Request the master password from the Technical
Service at the Viessmann Group.
2. "Menu"
3. "Service"
4.
Enter
"viservice"
password.
5. "Change passwords"
6. "Reset all passwords"
7.
Enter master password.
8.
Press
OK
2 times to confirm.
Diagnosis
Scanning operating data
Operating data can be scanned in various areas. See
"Diagnosis"
in the service menu overview.
Operating data on heating circuits with mixer, ventila-
tion or solar thermal systems can only be scanned if
such components are installed in the system.
For further information on operating data, see chapter
"Brief scan".
Note
If a scanned sensor is faulty,
"- - -"
appears on the dis-
play.
Calling up operating data
Tap the following buttons:
1. "Menu"
2. "Service"
3.
Enter
"viservice"
password.
4. "Diagnosis"
5.
Select required group, e.g.
"General"
.
Resetting operating data
Saved operating data (e.g. hours run) can be reset to
0.
The value "Adjusted outside temperature" is reset to
the actual value.
Tap the following buttons:
1. "Menu"
2. "Service"
3.
Enter
"viservice"
password.
4. "Diagnosis"
5. "Reset data"
6.
Select required value or
"All data"
.
Calling up device status
Tap the following buttons:
1. "Menu"
2. "Service"
3.
Enter
"viservice"
password.
4. "Device status"
The system scheme is shown in the display.
Diagnosis and service scans
Change passwords
(cont.)
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Diagnosis
