87
Fault code
displayed
Const.
Weather-
comp.
System characteris-
tics
Cause
Measures
EA
X
X
Burner in a fault state Ionisation current
outside permissible
range during cali-
bration (excessive
deviation from pre-
vious level)
Check flue system; reme-
dy flue gas recirculation if
required.
In open flue operation,
prevent high incidence of
dust in the combustion air.
Press reset button
R
.
Following several unsuc-
cessful reset attempts, re-
place the boiler coding
card and press reset but-
ton
R
.
Eb
X
X
Burner in a fault state Repeated flame
loss during calibra-
tion
Check gap between ioni-
sation electrode and burn-
er gauze assembly (see
page 37).
Check assignment of gas
type (see page 37).
Check flue system; reme-
dy flue gas recirculation if
required.
Press reset button
R
.
EC
X
X
Burner in a fault state Parameter fault
during calibration
Press reset button
R
or
Replace boiler coding
card and press reset but-
ton
R
.
Ed
X
X
Burner in a fault state Internal fault
Replace control unit.
EE
X
X
Burner in a fault state Flame signal at
burner start not
present or insuffi-
cient.
Check gas supply (gas
pressure and gas flow
switch).
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 37).
Check condensate drain.
Press reset button
R
.
Troubleshooting
Fault codes
(cont.)
5773 216 GB
Diagnosis
Содержание B2TA
Страница 12: ...12 2 5 1 4 2x 3 Fig 5 Installing the boiler Removing the front panels 5773 216 GB Installation ...
Страница 13: ...13 1 2 SW17 Fig 6 Installing the boiler Siting and levelling the boiler 5773 216 GB Installation ...
Страница 23: ...23 4 1 5 2 2x 3 Fig 16 Installing the boiler Fitting the front panels 5773 216 GB Installation ...
Страница 101: ...101 Parts lists Overview of assemblies 5773 216 GB Components ...
Страница 107: ...107 Parts lists Hydraulics 5773 216 GB Components ...
Страница 118: ...118 0004 0002 0005 0006 0001 0003 Fig 77 Parts lists Miscellaneous 5773 216 GB Components ...
Страница 142: ...142 5773 216 GB ...
Страница 143: ...143 5773 216 GB ...