
73
4.
d
Scanning is completed.
Fault codes
Fault
code on
the dis-
play
Const.
weath.-
comp.
System char-
acteristics
Cause
Measures
0F
X
X
Control mode
Maintenance Service the equip-
ment. After the
service, set coding
address "24:0"
10
X
Controls as if
the outside
temperature
were 0
°
C
Short circuit,
outside tem-
perature sen-
sor
Check the outside
temperature sen-
sor (see
page 83)
18
X
Controls as if
the outside
temperature
were 0
°
C
Break, out-
side tempera-
ture sensor
Check the outside
temperature sen-
sor (see
page 83)
20
X
Regulates with-
out flow tem-
perature sen-
sor (low loss
header)
Short circuit -
system flow
temperature
sensor
Check the low loss
header sensor (see
page 85)
28
X
Regulates with-
out flow tem-
perature sen-
sor (low loss
header)
Break, sys-
tem flow tem-
perature sen-
sor
Check the low loss
header sensor (see
page 85)
30
X
X
Burner blocked Short circuit,
boiler water
temperature
sensor
Check the boiler
water temperature
sensor (see
page 85)
38
X
X
Burner blocked Boiler water
temperature
sensor lead
broken
Check the boiler
water temperature
sensor (see
page 85)
Troubleshooting
Fault display
(cont.)
5692 760 GB
Summary of Contents for VITOCONTROL-S, WB2B
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