Viessmann CT3U, Инструкция по эксплуатации

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33
Fault code *1 Shown on
display System characteristics Cause of fault Measure
F AE F AE Burner control unit in a
fault state Valve 1 leaking Replace gas train.
F AF F AF Burner control unit in a
fault state Valve 2 leaking Replace gas train.
F A0 and F A1 F A0 and
F A1 Status duration too long,
fan ramp-up Internal fault; fan cannot
reach its set value. Replace the burner con-
trol unit or fan.
F A2 9 Burner control unit in a
fault state Interruption, safety chain
has been opened (strap-
ping plug
fJ
)
Check safety chain (strap-
ping plug
fJ
)
F A3 c00 No password for parame-
ter memory stick entered
within 3 min Values in burner control
unit and parameter mem-
ory stick differ. Timeout
due to password not be-
ing entered. Enter password.
Installation instruc-
tions for burner
components
F A4 and F A5 F A4 and
F A5 Burner control unit in a
fault state Internal error in feedback
from gas safety valves;
output relay does not re-
spond. Replace burner control
unit.
F A6 F A6 Ionisation flame monitor
reports external light in-
gress during start-up or
after post-purge. Gas train is leaking. Gas
is escaping and burning
off. Replace gas train.
F A7 F A7 No flame reported during
safety time; ionisation
flame monitor reports no
flame signal. Ionisation electrode set
incorrectly; ionisation ca-
ble not plugged in Adjust ionisation elec-
trode setting (see
page 19), plug in ionisa-
tion electrode.
F A7 F A7 No flame reported during
safety time; ionisation
flame monitor reports no
flame signal. Ignition electrodes set in-
correctly Adjust ignition electrode
setting (see page 19)
F A7 F A7 No flame reported during
safety time; ionisation
flame monitor reports no
flame signal. Insulation body of igni-
tion electrodes cracked Replace ignition electro-
des.
F A7 F A7 No flame reported during
safety time; ionisation
flame monitor reports no
flame signal. Incorrect gas type selec-
ted Adjust gas type setting
(see page 10)
F A7 F A7 No flame reported during
safety time; ionisation
flame monitor reports no
flame signal. Gas train does not open. Check the gas train and
replace if required.
*1 All fault codes are saved to the fault memory and the last 10 can be called up.
Troubleshooting
Diagnosis
(cont.)
5783 337 GB
Diagnosis