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 91)
30
X
X
Burner
blocked
Boiler water
temperature
sensor
shorted out
Check the boiler
water tempera-
ture sensor (see
page 91)
38
X
X
Burner
blocked
Boiler water
temperature
sensor lead
broken
Check the boiler
water tempera-
ture sensor (see
page 91)
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
Comfort sen-
sor shorted
out
Check sensors
(see page 91)
51
X
X
No DHW heat-
ing
Outlet tem-
perature
sensor
shorted out
Check sensors
(see page 91)
58
X
X
No DHW heat-
ing
Comfort sen-
sor lead bro-
ken
Check sensors
(see page 91)
59
X
X
No DHW heat-
ing
Outlet tem-
perature
sensor lead
broken
Check sensor
(see page 91)
Fault codes
(cont.)
82
Troubleshooting
5592
817
GB
Summary of Contents for VITOPEND 200
Page 12: ...Opening the control unit casing 12 Installation sequence 5592 817 GB...
Page 16: ...Fitting the programming unit into the control unit 16 Installation sequence 5592 817 GB...
Page 17: ...Fitting the front panel 17 Installation sequence 5592 817 GB Installation...
Page 113: ...Connection and wiring diagram internal connections 113 Designs 5592 817 GB Service...
Page 119: ...Parts lists cont 119 Parts lists 5592 817 GB Service...
Page 120: ...Parts lists cont 120 Parts lists 5592 817 GB...
Page 121: ...Parts lists cont 121 Parts lists 5592 817 GB Service...
Page 122: ...Parts lists cont 122 Parts lists 5592 817 GB...
Page 130: ...130 5592 817 GB...
Page 131: ...131 5592 817 GB...