Operating instructions

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
The 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.)
76
Troubleshooting
5692 672 GB