Viessmann B2HF - Checking operating data; Calling up operating data

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Tap the following buttons:
"Exit service menu" or .
Note
The system exits the service menu automatically after
30 min.
Changing the service password
In the delivered condition, "viservice" is preset as the
password for accessing the "Service menu".
Tap the following buttons:
01. " "
02. "Service"
03. Enter password "viservice".
04. Use to confirm.
05. "Change passwords".
06. "Service menu"
07. Enter current password.
08. Use to confirm.
09. Enter new password.
10. Confirm twice with .
Resetting all passwords to delivered condition
Tap the following buttons:
1. Request master password from the Viessmann
Technical Service.
2. " "
3. "Service"
4. Enter password "viservice".
5. Use to confirm.
6. "Change passwords"
7. "Reset all passwords"
8. Enter master password.
9. Confirm twice with .
Diagnosis
Checking operating data
Operating data can be called up in various areas. See
"Diagnosis" in the service menu overview.
Operating data on heating circuits with mixer can only
be called up if such components are installed in the
system.
Note
If a called up sensor is faulty, "- - -" appears on the
display.
Calling up operating data
Tap the following buttons:
1. " "
2. "Service"
3. Enter password "viservice".
4. Use to confirm.
5. "Diagnosis"
6. Select required group, e.g. "General".
Diagnosis and service checks
Exiting the service menu
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Diagnosis