Diagnosis - Viessmann VITODENS 200-W Service Instructions Manual

Diagnosis and Service Scans

Diagnosis

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
For an explanation of the relevant values in the individual lines and fields, see the following table:
Line (brief
scan)
1
1: System type 01 to 10
2: 0
3: 0
4: Software version
Burner control unit
5: Internal details for calibration
6: 0
7: LON Subnet address/system
number
8: LON SBVT
configuration
68
2 3
Software version control unit
0 Appliance version
Number of KM BUS participants
Type
Burner control unit
0 0
LON Node address
LON software LON Neuron chip software
version version
communication
co-processor
Vitodens 200-W B2HA 19, 28, 35 Service
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.
Field
4
Software version programming unit
Device identification ZE-ID
Software version, solar control
module SM1
Burner control unit version
0 Software
version,
extension AM1
Flow rate 0
sensor
switching state
1: Flow rate
too low or not
present
0
Number of LON participants
5 6
Software
version,
extension EA1
0