Fault
code
on the
display
Const.
weath.-
comp.
System char-
acteristics
Cause
Measures
E9
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.
Check the flue
gas system for
tightness.
Press "
E
RESET".
EA
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".
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.
F1
X
X
Burner in a
fault state
Flue gas
temperature
limiter has
responded.
Check the heating
system fill level.
Vent the system.
Press "
E
RESET" after the
flue gas system
has cooled down.
Fault codes
(cont.)
79
Troubleshooting
5692
673
GB
Summary of Contents for VITODENS 300-W
Page 111: ...Parts lists cont 111 Parts lists 5692 673 GB...
Page 112: ...Parts lists cont 112 Parts lists 5692 673 GB...
Page 113: ...Parts lists cont 113 Parts lists 5692 673 GB...
Page 114: ...Parts lists cont 114 Parts lists 5692 673 GB...
Page 121: ...121 5692 673 GB...
Page 122: ...122 5692 673 GB...
Page 123: ...123 5692 673 GB...
