Viessmann Vitotronic 200 Installation And Service Instructions Manual page 61

Faults that are displayed at the programming unit
Fault code System character-
on the dis- istics
play
9b Control mode
Only solar control
unit fault codes will
be displayed
9C Control mode
Only solar control
unit fault codes will
be displayed
9F Control mode
Only solar control
unit fault codes will
be displayed
AA Control mode
Ab Control operation,
DHW cylinder may
be cold
Cause Measures
Temperature sen- Check solar control unit
sor lead broken, sensor
Connection at S3
of the Vitosolic
Cylinder tempera- Check solar control unit
ture sensor lead sensor
broken,
Connection at S2
of the Vitosolic
Solar control unit Check solar control unit
fault; displayed if
a fault without
fault code occurs
at the solar con-
trol unit
Therm-Control Insert plug aJA.
configuration For Vitocrossal, code
fault: "0d:0" must be selected
Plug aJA not
plugged in
Cylinder primary Insert plug aJB and
system configura- check coding
tion fault:
Code "55:3" has
been selected,
but plug aJB is
not plugged in
and/or
Codes "4C:1" and
"4E:1" have not
been set
Troubleshooting
(cont.)
Separate installa-
tion and service
instructions
Separate installa-
tion and service
instructions
Separate installa-
tion and service
instructions
61