Viessmann Vitotronic 200 Installation And Service Instructions For Contractors page 100

Troubleshooting
Fault messages
(cont.)
Cause
Fault, safety equipment at "X1" of plug-in adaptor 2 for
external safety equipment
A7 Fault clock module in programming unit
Control mode
Cause
Fault, clock module programming unit
AA Configuration fault, TSA function
Control mode
Cause
Therm-Control configuration fault: Plug
ted.
AB Configuration fault, heat exchanger set
Control mode, DHW cylinder may be cold.
Cause
Configuration fault, cylinder loading system: Parameter
"00:3" in the "DHW" group is set, but plug
plugged in and/or parameter "53:1" in the "General"
group and "55:2" in the "General" group are not set.
AC Configuration fault, return temperature control
Control mode
Cause
Configuration fault, return temperature control: Parame-
ter "0C:1" in the "Boiler" group is set, but plug
not plugged in and/or parameter "55:1" in the "Gener-
al" group is not set.
AD Configuration fault, butterfly valve
Control mode
Cause
Configuration fault, butterfly valve: Parameter "0C:2",
"0C:3" or "0C:4" in the "Boiler" group is set and pa-
rameter "55:1" in the "General" group is set.
B0 Short circuit, flue gas temperature sensor
Control mode
100
Measure
Check safety equipment, and reset if required.
Measure
Replace the programming unit.
Measure
not inser- Insert plug
aJA
Parameter "0D:0" in the "Boiler" group must be set.
Measure
Insert plug
is not
aJB
Measure
Insert plug
is
aJA
Measure
With butterfly valve:
■
Set parameter "55:0" in the "General" group.
Without butterfly valve:
■
Set parameter "0C:1" in the "Boiler" group.
.
aJA
and check parameters.
aJB
and check parameters.
aJA