75
Fault code dis-
played
System characteristics
Cause
Measures
EB
Burner in a fault state
Repeated flame loss dur-
ing calibration
Check gap between ionisation
electrode and burner gauze as-
sembly (see page 21).
Check flue system; remove flue
gas recirculation if required.
Press reset button
R
.
EC
Burner in a fault state
Parameter error during
calibration
Press reset button
R
.
or
Replace coding card and then
press reset button
R
.
ED
Burner in a fault state
Internal fault
Replace control unit.
EE
Burner in a fault state
Flame signal is not
present or insufficient at
burner start.
Check gas supply (gas pressure
and gas flow switch).
Check gas train.
Check ionisation electrode and
connecting cable.
Check ignition:
■
Connecting cables to ignition
module and ignition electrode
■
Ignition electrode gap and con-
tamination (see page 21).
Check condensate drain.
Press reset button
R
.
EF
Burner in a fault state
Flame is lost immediately
after it has built (during
safety time).
Check gas supply (gas pressure
and gas flow switch).
Check balanced flue system for
flue gas recirculation.
Check ionisation electrode (replace
if required):
■
Distance to burner gauze assem-
bly (see page 21)
■
Contamination on electrode
Press reset button
R
.
F0
Burner blocked
Internal fault
Replace control unit.
F1
Burner in a fault state
Flue gas temperature lim-
iter has responded.
Check heating system fill level.
Vent the system.
Press reset button
R
after flue sys-
tem has cooled down.
F2
Burner in a fault state
Temperature limiter has
responded.
Check heating system fill level.
Check circulation pump. Vent the
system. Check temperature limiter
and connecting cables.
Press reset button
R
.
F3
Burner in a fault state
Flame signal is already
present at burner start.
Check ionisation electrode and
connecting cable.
Press reset button
R
.
F6
Burner in a fault state
Temperature values of the
boiler water temperature
sensors vary too widely
from one another.
Replace boiler water temperature
sensors
Troubleshooting
Fault codes
(cont.)
5792 925 GB
Diagnosis
Содержание Vitocrossal 100 CI1
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