
74
Fault
code on
the dis-
play
Const.
weath.-
comp.
System char-
acteristics
Cause
Measures
40
X
Mixer closes
Heating cir-
cuit with
mixer M2 flow
temperature
sensor shor-
ted out
Check the flow
temperature sen-
sor
48
X
Mixer closes
Break, heat-
ing circuit M2
flow tempera-
ture sensor
Check the flow
temperature sen-
sor
50
X
X
No DHW heat-
ing
Cylinder tem-
perature sen-
sor shorted
out
Check the sensor
(see page 85)
58
X
X
No DHW heat-
ing
Cylinder tem-
perature sen-
sor lead bro-
ken
Check the sensor
(see page 85)
92
X
X
Control mode
Collector
temperature
sensor shor-
ted out; con-
nects to the
Vitosolic at
S1
Check the sensor
at the Vitosolic
93
X
X
Control mode
Cylinder tem-
perature sen-
sor shorted
out; connects
to the
Vitosolic at
S3
Check the sensor
at the Vitosolic
94
X
X
Control mode
Temperature
sensor shor-
ted out; con-
nects to the
Vitosolic at
S2
Check the sensor
at the Vitosolic
Troubleshooting
Fault codes
(cont.)
5692 760 GB
Summary of Contents for VITOCONTROL-S, WB2B
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