Diagnosis - Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual

Diagnosis and service scans
Service menu
Note
Do not adjust menu point "Multi-boiler
system".

Diagnosis

Operating data
Weather-compensated control unit
Calling up operating data
■ Operating data can be scanned in six
areas. See "Diagnosis" in the service
menu overview.
■ Operating data on heating circuits with
mixers and solar can only be called up
if the components are installed in the
system.
■ For further information on operating da-
ta, see chapter "Brief scan".
Calling up operating data
Service menu:
1. Press OK and å simultaneously for
approx. 4 s.
2. "Diagnosis"
3. Select required group, e.g. "General".
Note
"- - -" appears on the display if a sensor
that has been scanned is faulty.
112
(cont.)
This menu point changes the control unit
to a constant temperature control unit in
a multi-boiler system.
Constant temperature control unit
■ Operating data can be called up in the
"i" menu.
■ For further information on operating da-
ta, see chapter "Brief scan".
Service menu:
1. Press OK and å simultaneously for
approx. 4 s.
2. Select required information with / .
Note
"- - -" appears on the display if a sensor
that has been scanned is faulty.