117
Dis-
played
fault
code
Const.
Weath.-
comp.
System char-
acteristics
Cause
Measures
10
X
X
Regulates, as if
the outside
temperature
were 0 °C
Short circuit,
outside tem-
perature sen-
sor
Check outside tem-
perature sensor
(see page 135)
18
X
X
Regulates, as if
the outside
temperature
were 0 °C
Lead break,
outside tem-
perature sen-
sor
Check outside tem-
perature sensor
(see page 135)
19
X
X
Regulates, as if
the outside
temperature
were 0 °C
Communica-
tion interrup-
tion, outside
temperature
sensor RF:
outside tem-
perature sen-
sor RF, KM
BUS to wire-
less base sta-
tion, wireless
base station
or wireless re-
peater faulty
or defective
Check wireless
connection:
place outside tem-
perature sensor RF
and wireless re-
peater close to the
boiler.
Check KM BUS to
wireless base sta-
tion.
Log off outside
temperature sen-
sor and wireless
repeater, then log
them on again.
Wireless
base sta-
tion
Replace outside
temperature sen-
sor RF.
Replace wireless
repeater.
Replace wireless
base station.
Troubleshooting
Fault codes
5585 174 GB
Service