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Fault
code
on the
display
Const.
Weath.-
comp.
System char-
acteristics
Cause
Measures
b8
X
X
Burner
blocked
Flue gas
temperature
sensor lead
broken
Check the flue
gas temperature
sensor
bA
X
Mixer M2 reg-
ulates to a
flow tempera-
ture of 20 °C.
Communica-
tion fault, ex-
tension kit
for heating
circuit M2
Check the exten-
sion kit connec-
tions and coding.
Start the exten-
sion kit.
bC
X
Control mode
without remote
control
Communica-
tion fault,
Vitotrol re-
mote control,
heating cir-
cuit A1
Check connec-
tions, cable/lead
and coding ad-
dress "A0"
bd
X
Control mode
without remote
control
Communica-
tion fault,
Vitotrol re-
mote control,
heating cir-
cuit M2
Check connec-
tions, cable/lead
and coding ad-
dress "A0"
bE
X
Control mode
Vitotrol re-
mote control
incorrectly
programmed
Check remote
control DIP switch
setting (see
page 105)
bF
X
Control mode
Incorrect
LON com-
munication
module
Replace the LON
communication
module
C2
X
X
Control mode
KM BUS
lead broken
to solar heat-
ing control
unit
Check the KM
BUS cable, the
solar control unit
and coding ad-
dress "54"
Fault codes
(cont.)
77
Troubleshooting
5692
731
GB
Содержание VITODENS 333-F WS3A
Страница 109: ...A1 Main PCB A2 Power supply unit Connection and wiring diagram external connections 109 Designs 5692 731 GB ...
Страница 113: ...Parts lists cont 113 Parts lists 5692 731 GB ...
Страница 114: ...Parts lists cont 114 Parts lists 5692 731 GB ...
Страница 115: ...Parts lists cont 115 Parts lists 5692 731 GB ...
Страница 116: ...Parts lists cont 116 Parts lists 5692 731 GB ...
Страница 117: ...Parts lists cont 117 Parts lists 5692 731 GB ...