Viessmann 7513244, Инструкция по установке и обслуживанию

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97
Fault code dis-
played System characteristics Cause Measures
db Control mode without room
influence Short circuit, room tem-
perature sensor, heating
circuit 2 (with mixer) Check room temperature sensor,
heating circuit 2
dC Control mode without room
influence Short circuit, room tem-
perature sensor, heating
circuit 3 (with mixer) Check room temperature sensor,
heating circuit 3
dd Control mode without room
influence Lead break, room temper-
ature sensor, heating cir-
cuit 1 (without mixer) Check room temperature sensor
for heating circuit 1 and remote
control configuration (see
page 123)
dE Control mode without room
influence Lead break, room temper-
ature sensor, heating cir-
cuit 2 (with mixer) Check room temperature sensor
for heating circuit 2 and remote
control configuration (see
page 123)
dF Control mode without room
influence Lead break, room temper-
ature sensor, heating cir-
cuit 3 (with mixer) Check room temperature sensor
for heating circuit 3 and remote
control configuration (see
page 123)
E1 Burner in a fault state Ionisation current too high
during calibration Check gap between ionisation
electrode and burner gauze as-
sembly (see page 50).
In open flue operation, prevent
high incidence of dust in the com-
bustion air.
Press reset button
R .
E3 Burner in a fault state Heat transfer too low dur-
ing calibration.
Temperature limiter has
shut down. Ensure adequate heat transfer.
Press reset button
R .
E4 Burner blocked 24 V power supply fault Replace control unit.
E5 Burner blocked Flame amplifier fault Replace control unit.
E6 Burner blocked System pressure too low Top up with water.
E7 Burner in a fault state Ionisation current too low
during calibration Check ionisation electrode:
■
Distance to burner gauze assem-
bly (see page 50)
■
Electrode contamination
■
Connecting lead and plug-in con-
nections
Check flue system; remedy flue
gas recirculation if required.
Press reset button
R .
E8 Burner in a fault state Ionisation current lies out-
side the permissible range Check gas supply (gas pressure
and gas flow switch), gas train and
connection pipe.
Check assignment of gas type (see
page 43).
Check ionisation electrode:
■
Distance to burner gauze assem-
bly (see page 50)
■
Electrode contamination
Press reset button R .
Troubleshooting
Fault codes
(cont.)
5773 238 GB
Diagnosis