Viessmann Series B2HA 40, Инструкция по установке и обслуживанию

Страница: 130 / 180

130
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 mode,
prevent very dusty
conditions for 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 46).
Check allocation of
gas type (see
page 37).
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 .
Ed X X Burner in a fault
state Internal fault Replace control
unit.
Troubleshooting
Fault codes
(cont.)
5623 520 GB