Viessmann 7513244, Инструкция по установке и обслуживанию

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98
Fault code dis-
played System characteristics Cause Measures
EA Burner in a fault state Ionisation current outside
permissible range during
calibration (excessive de-
viation from previous lev-
el) Check flue system; remedy flue
gas recirculation if required.
In open flue operation, prevent
high incidence of dust in the com-
bustion air.
Press reset button
R .
Following several unsuccessful re-
set attempts, replace the boiler
coding card and press reset button
R .
Eb Burner in a fault state Repeated flame loss dur-
ing calibration Check gap between ionisation
electrode and burner gauze as-
sembly (see page 50).
Check assignment of gas type (see
page 43).
Check flue system; remedy flue
gas recirculation if required.
Press reset button
R .
EC Burner in a fault state Parameter fault during cal-
ibration Press reset button R or
replace boiler coding card and
press reset button
R .
Ed Burner in a fault state Internal fault Replace control unit.
EE 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 electrode and
connecting cable.
Check ignition:
■
Connecting leads to ignition
module and ignition electrode
■
Ignition electrode gap and con-
tamination (see page 50).
Check condensate drain.
Press reset button
R .
EF Burner in a fault state Flame is lost immediately
after it has formed (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 necessary):
■
Distance to burner gauze assem-
bly (see page 50)
■
Electrode contamination
Press reset button R .
F0 Burner blocked Internal fault Replace control unit.
F1 Burner in a fault state Flue gas temperature lim-
iter has triggered. Check heating system fill level.
Vent the system.
Press reset button
R after flue sys-
tem has cooled down.
Troubleshooting
Fault codes
(cont.)
5773 238 GB
Diagnosis