Viessmann Vitodens 333-F Service Instructions Manual page 84

Troubleshooting
Fault codes
(cont.)
Fault Const. weath.-
code comp.
on the
display
EA X X
Eb X X
EC X X
Ed X X
F0 X X
F1 X X
84
System char- Cause
acteristics
Burner in a The ionisa-
fault state tion current
lies outside
the permissi-
ble range
during cali-
bration
Burner in a Heat draw-
fault state off repeat-
edly too low
during cali-
bration
Burner in a The ionisa-
fault state tion current
lies outside
the permissi-
ble range
during cali-
bration
Burner in a Internal fault
fault state
Burner Internal fault
blocked
Burner in a Flue gas
fault state temperature
limiter has
responded.
Measures
Check the ionisa-
tion electrode and
cable.
Press "E
RESET".
Initiate heat draw-
off and trigger
manual calibra-
tion (see page 97)
Press "E
RESET".
Check the ionisa-
tion electrode and
cable.
Press "E
RESET".
Replace the con-
trol unit.
Replace the con-
trol unit.
Check the heating
system fill level.
Vent the system.
Press "E
RESET" after the
flue gas system
has cooled down.