Operating instructions

115
Dis-
played
fault
code
Const. Weath.-
comp.
System char-
acteristics
Cause Measures
98 X X Control mode Lead break,
temperature
sensor
/
Check sensor /
on solar control
module.
99 X X Control mode Lead break,
temperature
sensor
aÖ
Check sensor aÖ
on the solar control
module.
9A X X No solar DHW
heating
Lead break,
collector tem-
perature sen-
sor
Check temperature
sensor
&
on the
solar control mod-
ule or sensor on
the Vitosolic.
9b X X Control mode Lead break,
temperature
sensor
Check temperature
sensor at connec-
tion S3 on the
Vitosolic 100.
9C X X No solar DHW
heating
Lead break,
cylinder tem-
perature sen-
sor
Check temperature
sensor
%
on solar
control module or
sensor on the
Vitosolic.
9E X X Control mode No flow rate
in collector
circuit or flow
rate too low,
or tempera-
ture limiter
has respon-
ded
Check solar circuit
pump and solar cir-
cuit. Acknowledge
fault message.
9F X X Control mode Solar control
module or
Vitosolic faul-
ty
Replace solar con-
trol module or
Vitosolic
A3 X Burner blocked Flue gas tem-
perature sen-
sor not posi-
tioned cor-
rectly.
Install flue gas tem-
perature sensor
correctly (see
page 134).
Troubleshooting
Fault codes
(cont.)
5772 909 GB
Service