Viessmann VITODENS 200-W Installation And Service Instructions Manual page 124

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