Viessmann B2TF - Resetting All Passwords to Delivered Condition; Diagnosis; Checking Operating Data; Calling up Messages (Message History)

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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".
Calling up messages (message history)
The messages are sorted by date.
Tap the following buttons:
1. " "
2. "Service"
3. Enter password "viservice".
4. Confirm with .
Diagnosis and service checks
Changing the service password (cont.)
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Diagnosis