Fault
code
on the
display
Const.
Weath.-
comp.
System char-
acteristics
Cause
Measures
Eb
X
X
Burner in a
fault state
Heat draw-
off repeat-
edly too low
during cali-
bration
Initiate a heat
draw-off. Switch
the boiler OFF
and ON again.
Press "
E
RESET".
EC
X
X
Burner in a
fault state
The ionisa-
tion current
lies outside
the permissi-
ble range
during cali-
bration
Check the ionisa-
tion electrode and
cable.
Press "
E
RESET".
Ed
X
X
Burner in a
fault state
Internal fault
Replace the con-
trol unit.
F0
X
X
Burner
blocked.
Internal fault
Replace the con-
trol unit.
F2
X
X
Burner in a
fault state
The tem-
perature lim-
iter has
responded.
Check the heating
system fill level.
Check the circula-
tion pump. Check
the temperature
limiter and con-
necting cables.
Vent the system.
Press "
E
RESET".
F3
X
X
Burner in a
fault state
Flame signal
is already
present at
burner start.
Check the ionisa-
tion electrode and
connecting cable.
Press "
E
RESET".
Fault codes
(cont.)
78
Troubleshooting
5692
761
GB
Содержание Vitodens 200-W WB2B Series
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