Viessmann Vitodens 200-W Series Installation And Service Instructions Manual page 83

Fault codes
(cont.)
Displayed Const.
fault code
EA X
Eb X
EC X
Ed X
EE X
Weath.- System characteris-
comp. tics
X Burner in a fault state Ionisation current
X Burner in a fault state Repeated flame
X Burner in a fault state Parameter fault
X Burner in a fault state Internal fault
X Burner in a fault state Flame signal is not
Cause Measures
Check flue system; reme-
outside permissible dy flue gas recirculation if
range during cali- required.
bration (deviation In open flue operation,
from previous level prevent high incidence of
too great) dust in the combustion air.
Press reset button R.
Following several unsuc-
cessful reset attempts, re-
place boiler coding card
and press reset button R.
Check gap between ioni-
loss during calibra- sation electrode and burn-
tion er gauze assembly (see
page 32).
Check allocation of gas
type (see page 26).
Check flue system; reme-
dy flue gas recirculation if
required.
Press reset button R.
Press reset button R
during calibration or
Replace boiler coding
card and Press reset but-
ton R.
Replace control unit.
Check gas supply (gas
present or too pressure and gas flow
weak at burner switch).
start. Check gas train.
Check ionisation elec-
trode and connecting ca-
ble.
Check ignition:
Connecting leads to ig-
■
nition module and igni-
tion electrode
Ignition electrode gap
■
and contamination (see
page 32).
Check condensate drain.
Press reset button R.
Troubleshooting
83