Fault
code
on the
display
Const.
weath.-
comp.
System char-
acteristics
Cause
Measures
28
X
X
Regulates
without flow
temperature
sensor (low
loss header)
System flow
temperature
sensor lead
broken
Check the low
loss header sen-
sor (see page 89)
30
X
X
Burner
blocked
Boiler water
temperature
sensor
shorted out
Check the boiler
water tempera-
ture sensor (see
page 89)
38
X
X
Burner
blocked
Boiler water
temperature
sensor lead
broken
Check the boiler
water tempera-
ture sensor (see
page 89)
40
X
Mixer closes
Heating cir-
cuit with
mixer M2
flow tem-
perature
sensor
shorted out
Check flow tem-
perature sensor
48
X
Mixer closes
Heating cir-
cuit M2 flow
temperature
sensor lead
broken
Check flow tem-
perature sensor
50
X
X
No DHW heat-
ing
Cylinder
temperature
sensor
shorted out
Check sensors
(see page 89)
51
X
X
No DHW heat-
ing
Outlet tem-
perature
sensor
shorted out
Check sensors
(see page 89)
58
X
X
No DHW heat-
ing
Cylinder
temperature
sensor lead
broken
Check sensors
(see page 89)
Fault codes
(cont.)
78
Troubleshooting
56
92
682
GB
Содержание Vitodens 333-F
Страница 5: ...Keyword index 133 Index cont 5 Index 5692 682 GB ...
Страница 119: ...A1 Main PCB A2 Power supply unit Connection and wiring diagram external connections 119 Designs 5692 682 GB ...
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