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Viessmann Manuals
Boiler
Vitodens 200-W WB2B Series
Service instructions for contractors
Viessmann VITODENS 200-W WB2B Service Instructions For Contractors page 75
80 and 105 kw, wall mounted gas fired condensing boiler, natural gas version
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Also See for VITODENS 200-W WB2B
:
Installation instructions manual
(92 pages)
,
Start-up/service instructions
(82 pages)
,
Technical data manual
(44 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Fault codes
(cont.)
Fault
Const.
Weath.-
code
comp.
on the
display
bF
X
C2
X
X
C5
X
X
C6
X
C7
X
X
Cd
X
X
CE
X
X
System char-
Cause
acteristics
Control mode
Incorrect
LON com-
munication
module
Control mode
Communica-
tion fault,
solar control
unit
Control mode,
Communica-
max. pump
tion fault,
speed
variable
speed circu-
lation pump
in the heat-
ing circuit
connection
set
Control mode,
Communica-
max. pump
tion fault,
speed
variable
speed circu-
lation pump,
heating
circuit M2
Control mode,
Communica-
max. pump
tion fault,
speed
variable
speed circu-
lation pump,
heating
circuit A1
Control mode
Communica-
tion fault
Vitocom 100
(KM BUS)
Control mode
Communica-
tion fault
ext. exten-
sion
Troubleshooting
Measures
Replace the LON
communication
module.
Check connec-
tions and coding
address "54".
Check the setting
of coding address
"30"
Check setting of
coding address
"E5"
Check setting of
coding address
"E5"
Check connec-
tions and the
Vitocom 100.
Check connec-
tions and settings
of coding address
"2E".
75
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Table of Contents
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