Table of Contents
Advertisement
Fault codes
(cont.)
Display fault
System char-
code
acteristics
bd
Control mode
without remote
control
bE
Control mode
bF
Control mode
C2
Control mode
C5
Control mode,
max. pump
speed
C6
Control mode,
max. pump
speed
C7
Control mode,
max. pump
speed
Cd
Control mode
CE
Control mode
Cause
Communication fault
Vitotrol remote control,
heating circuit with mixer
M2
Vitotrol remote control in-
correctly encoded
Incorrect LON communi-
cation module
Communication fault
solar control unit
Communication fault
ternal variable speed
pump
Communication fault
variable speed circulation
pump, heating circuit with
mixer M2
Communication fault
variable speed circulation
pump, heating circuit A1
Communication fault
Vitocom 100 (KM BUS)
Communication fault
ext. extension
Troubleshooting
Measures
Check remote
control DIP switch
setting (see
page 97)
Replace the LON
communication
module
Check connec-
tions and coding
address "54"
in-
Check coding ad-
dress "30" set-
tings; check the
heating circuit
pump DIP switch
settings
Check coding ad-
dress "E5" set-
tings; check the
heating circuit
pump DIP switch
settings
Check coding ad-
dress "E5" set-
tings; check the
heating circuit
pump DIP switch
settings
Check the
Vitocom 100 and
connections
Check connec-
tions and coding
address "2E" set-
tings
71
Advertisement
Table of Contents
