Viessmann Vitodens 200 WB2C 45, Service Instructions Manual

Page: 98 / 148

98
Dis-
played
fault
code Const. Weath.-
comp. System char-
acteristics Cause Measures
48 X Mixer closes Lead break,
flow tempera-
ture sensor,
heating circuit
2 (with mixer) Check flow temper-
ature sensor
4C X Mixer closes Lead break,
flow tempera-
ture sensor,
heating circuit
3 (with mixer) Check flow temper-
ature sensor
50 X X No DHW heat-
ing Short circuit,
cylinder tem-
perature sen-
sor Check the cylinder
temperature sen-
sor (see
page 111)
58 X X No DHW heat-
ing Lead break,
cylinder tem-
perature sen-
sor Check the cylinder
temperature sen-
sor (see
page 111)
90 X X Control mode Short circuit,
temperature
sensor
/
Check sensor /
on the solar control
module
91 X X Control mode Short circuit,
temperature
sensor
aÖ
Check sensor
aÖ
on the solar control
module
92 X X No DHW heat-
ing Short circuit,
collector tem-
perature sen-
sor Check temperature
sensor
&
on the
solar control mod-
ule or the Vitosolic
sensor
93 X X Control mode Short circuit,
cylinder tem-
perature sen-
sor Check temperature
sensor at connec-
tion S3 to the
Vitosolic 100
94 X X No DHW heat-
ing Short circuit,
cylinder tem-
perature sen-
sor Check temperature
sensor
%
on the
solar control mod-
ule or the Vitosolic
sensor
Troubleshooting
Fault codes
(cont.)
5692 843 GB