Viessmann VITODENS 200-W Service Instructions Manual page 96

Troubleshooting
Fault codes
(cont.)
Dis- Const.
played
fault
code
bd
bE
bF
C1 X
C2 X
C3 X
C4 X
Cd X
96
Weath.- System char-
comp. acteristics
X Control mode
without remote
control
X Control mode
without remote
control
X Control mode
X Control mode
X Control mode
X Control mode
X Control mode
X Control mode
Cause Measures
Communica- Check connec-
tion error, tions, lead, coding
remote con- address "A0" and
trol Vitotrol remote control set-
heating circuit tings (see
2 (with mixer) page 127).
Communica- Check connec-
tion error, tions, lead, coding
remote con- address "A0" and
trol Vitotrol remote control set-
heating circuit tings (see
3 (with mixer) page 127).
Incorrect Replace LON com-
LON commu- munication module
nication mod-
ule
Communica- Check electrical
tion error connections
extension
EA1
Communica- Check solar control
tion error, module or
solar control Vitosolic
module or
Vitosolic
Extension Check electrical
AM1 commu- connections
nication error
Communica- Check Open
tion error, Therm extension
Open Therm
extension
Communica- Check connec-
tion error, tions, Vitocom 100
Vitocom 100 and coding
(KM BUS) address "95"