Diagnosis - Viessmann VITODENS 222-F Service Instructions Manual

Diagnosis and Service Scans

Diagnosis

Scanning operating data
- Operating data can be scanned in six areas.
See "Diagnosis" in the service menu overview.
Operating data on heating circuits with mixing valves
and solar can only be scanned if the components are
installed in the system. For further information on
operating data, see chapter "Brief scan".
Note: "- - -" appears on the display if a sensor that has
been scanned is faulty.
Calling up operating data
1. Press OK and simultaneously for approximately
4 seconds.
2. "Diagnosis"
3. Select required group, e.g. "General
Refer toOperating instructions
Brief scan
In the brief scan, you can call up temperatures, software
versions and connected components, for example:
1. Press OK and simultaneously for approximately
4 seconds
2. "Diagnosis"
3. "Brief scan".
4. Press OK. The display shows 9 lines with 6 fields each.
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Vitodens 222-F B2TA 19 and 35 Service
Resetting operating data
Saved operating data (e.g. hours run) can be reset to 0.
The value "Adjusted outside temp" is reset to the actual
value.
1. Press OK and simultaneously for approximately 4
seconds
2. "Diagnosis"
3. "Reset data"
4. Select required value (e.g. "Burner starts") or
"All details".
The following values can be scanned, depending on the
system installed:
Display screen
Slope A1 *1 - shift A1
Slope M2 *2 - shift M2
Outdoor temperature
adjustment
Outdoor temperature actual
Boiler temperature setpoint
Boiler temperature actual
DHW temperature setpoint
DHW temperature actual
Supply temperature
Supply temperature actual
Common supply
temperature setpoint
Common supply
temperature actual
Boiler coding card
Brief scan 1 to 8
Explanation
The adjusted outdoor
temperature can be reset
to the actual outdoor
temperature with "D".
Heating circuit with
mixing valve.
Heating circuit with
mixing valve.
Low-loss header.
Low-loss header.