Displayed
fault code
Const.
Weat-
her-
comp.
System
character-
istics
Cause
Remedy
F1
X
X
Burner in
fault state
Flue gas tempera-
ture limiter has
responded
Check the
heating sys-
tem water
level. Vent
the heating
system.
Press reset
E
no sooner
than after
20 minutes.
F2
X
X
Burner in
fault state
Temperature limiter
has responded
Check the
heating sys-
tem water
level. Check
the circula-
tion pump.
Vent the heat-
ing system.
Check the
temperature
limiter and
leads.
Press
E
.
F3
X
X
Burner in
fault state
The flame signal is
already present at
burner start
Check the
ionisation
electrode and
leads.
Press
E
.
Checking and acknowledging faults
(cont.)
82
Troubleshooting
56
92
550
GB
Summary of Contents for VITODENS 300 WB3A
Page 10: ...Opening the control unit housing 10 5862 570 GB...
Page 14: ...Closing control unit housing and inserting user interface 14 5862 570 GB...
Page 129: ...Parts lists cont 113 Parts lists 5692 550 GB...
Page 130: ...Parts lists cont 114 Parts lists 5692 550 GB...
Page 131: ...Parts lists cont 115 Parts lists 5692 550 GB...
Page 132: ...Parts lists cont 116 Parts lists 5692 550 GB...
Page 133: ...Parts lists cont 117 Parts lists 5692 550 GB...
Page 145: ...129 5692 550 GB...
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