104
Dis-
played
fault
code
Const.
Weath.-
comp.
System char-
acteristics
Cause
Measures
dF
X
Control mode
without room
influence
Lead break,
room temper-
ature sensor,
heating circuit
3 (with mixer)
Check room tem-
perature sensor for
heating circuit 3
and remote control
settings (see
page 132)
E0
X
Control mode
Fault external
LON sub-
scriber
Check connections
and LON subscrib-
ers
E4
X
X
Burner blocked Fault, supply
voltage 24 V
Replace the control
unit.
E5
X
X
Burner blocked Fault, flame
amplifier
Replace the control
unit.
E8
X
X
Burner in a fault
state
The ionisa-
tion current
lies outside
the permissi-
ble range
Check the ionisa-
tion electrode and
cable.
Press reset button
R.
E9
X
X
Burner in a fault
state
The ionisa-
tion current
lies outside
the permissi-
ble range dur-
ing calibra-
tion
Check the ionisa-
tion electrode and
cable.
Check the flue gas
system for tight-
ness.
Press reset button
R.
EA
X
X
Burner in a fault
state
The ionisa-
tion current
lies outside
the permissi-
ble range dur-
ing calibra-
tion
Check the ionisa-
tion electrode and
cable.
Press reset button
R
.
Troubleshooting
Fault codes
(cont.)
5692 843 GB
Summary of Contents for Vitodens 200 WB2C 45
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