Viessmann Vitovalor PT2 E11T Installation And Service Instructions Manual page 119

Fault messages for gas condensing module
Fault number System characteristics
on the display
F.385 Burner in a fault state
F.386 Burner in a fault state
F.387 Burner in a fault state
F.388 Burner in a fault state
F.391 Burner in a fault state
F.392 Burner in a fault state
F.395 Burner in a fault state
F.396 Burner in a fault state
F.399 Burner in a fault state
F.400 Burner in a fault state
F.401 Burner in a fault state
(cont.)
Cause
Short circuit, signal 1, ioni-
sation current
Lead break, signal 1, ioni-
sation current
Short circuit, signal 2, ioni-
sation current
Lead break, signal 2, ioni-
sation current
Short circuit, flow temper-
ature sensor 2
Lead break, flow tempera-
ture sensor 2
Short circuit, flame tem-
perature signal 1
Lead break, flame temper-
ature signal 1
Short circuit, ionisation
voltage, signal 1
Lead break, ionisation
voltage, signal 1
Short circuit, ionisation
voltage, signal 2
Troubleshooting
Measures
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check flow temperature sensor
(see page 130).
Reset burner.
Check flow temperature sensor
(see page 130).
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
Check ignition electrodes and con-
necting cables.
Check ionisation electrode and
connecting cable.
Reset burner.
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