Operating instructions

124
Dis-
played
fault
code
Const. Weath.-
comp.
System char-
acteristics
Cause Measures
EA X X Burner in a fault
state
Ionisation
current out-
side permissi-
ble range dur-
ing calibration
(deviation
from previous
level too
great)
Check flue system;
remedy flue gas re-
circulation if re-
quired.
In open flue opera-
tion, prevent high
incidence of dust in
the combustion
air.
Press reset button
R.
Following several
unsuccessful reset
attempts, replace
boiler coding card
and press reset
button R.
Eb X X Burner in a fault
state
Repeated
flame loss
during cali-
bration
Check gap be-
tween ionisation
electrode and
burner gauze as-
sembly (see
page 42).
Check allocation of
gas type (see
page 35).
Check flue system;
remedy flue gas re-
circulation if re-
quired.
Press reset button
R.
EC X X Burner in a fault
state
Parameter
fault during
calibration
Press reset button
R
or
Replace boiler cod-
ing card and press
reset button R.
Troubleshooting
Fault codes
(cont.)
5772 909 GB