Viessmann Vitodens 200 WB2C 45, Service Instructions Manual

Page: 101 / 148

101
Dis-
played
fault
code Const. Weath.-
comp. System char-
acteristics Cause Measures
bd X Control mode
without remote
control Communica-
tion error,
remote con-
trol Vitotrol
heating circuit
2 (with mixer) Check connec-
tions, lead, coding
address "A0" and
remote control set-
tings (see
page 132)
bE X Control mode
without remote
control Communica-
tion error,
remote con-
trol Vitotrol
heating circuit
3 (with mixer) Check connec-
tions, lead, coding
address "A0" and
remote control set-
tings (see
page 132)
bF X Control mode Incorrect
LON commu-
nication mod-
ule Replace the LON
communication
module
C1 X X Control mode Communica-
tion error
extension
EA1 Check electrical
connections
C2 X X Control mode Communica-
tion error,
solar control
module or
Vitosolic Check solar control
module or
Vitosolic
C3 X X Control mode Extension
AM1 commu-
nication error Check electrical
connections
C4 X X Control mode Communica-
tion error,
Open Therm
extension Check Open
Therm extension
C5 X X Control mode,
max. pump
speed Communica-
tion error, var-
iable speed
internal pump Check the setting
of coding address
"30"
Troubleshooting
Fault codes
(cont.)
5692 843 GB