Operating instructions

114
Dis-
played
fault
code
Const. Weath.-
comp.
System char-
acteristics
Cause Measures
50 X X Only
type B2HA:
No DHW heat-
ing by the boil-
er
Short circuit
in the cylinder
temperature
sensor or
comfort sen-
sor
Check cylinder
temperature sen-
sor (see page 130)
or comfort sensor
(see page 132)
51 X X No DHW heat-
ing by the boil-
er
Short circuit,
outlet temper-
ature sensor
Check sensor (see
page 132)
58 X X Only
type B2HA:
No DHW heat-
ing by the boil-
er
Lead break,
cylinder tem-
perature sen-
sor or comfort
sensor
Check cylinder
temperature sen-
sor (see page 130)
or comfort sensor
(see page 132)
59 X X No DHW heat-
ing by the boil-
er
Lead break,
outlet temper-
ature sensor
Check sensor (see
page 132)
90 X X Control mode Short circuit,
temperature
sensor
/
Check sensor /
on solar control
module.
91 X X Control mode Short circuit,
temperature
sensor
aÖ
Check sensor aÖ
on solar control
module.
92 X X No solar DHW
heating
Short circuit,
collector tem-
perature sen-
sor
Check temperature
sensor
&
on the
solar control mod-
ule or sensor on
the Vitosolic.
93 X X Control mode Short circuit,
cylinder tem-
perature sen-
sor
Check temperature
sensor at connec-
tion S3 on the
Vitosolic 100.
94 X X No solar DHW
heating
Short circuit,
cylinder tem-
perature sen-
sor
Check temperature
sensor
%
on solar
control module or
sensor on the
Vitosolic.
Troubleshooting
Fault codes
(cont.)
5772 909 GB