Fault code
on the dis-
play
System character-
istics
Cause
Measures
E5
Burner in a fault
state
Internal fault
Press "
E
RESET".
Replace the control unit
if the burner will not re-
start.
E6
Burner in a fault
state
The oil preheater
does not respond
inside the toler-
ated time
Check oil pre-heater and
supply line and replace
if necessary.
Press "
E
RESET".
F0
Burner blocked.
Internal fault
Replace the control unit.
F1
Burner in a fault
state
Flue gas tem-
perature limiter
has responded
Check the heating sys-
tem fill level. Vent the
system.
Press "
E
RESET" after
the flue gas system has
cooled down.
F2
Burner in a fault
state
The temperature
limiter has re-
sponded
Check the heating sys-
tem fill level. Check the
circulation pump. Vent
the system. Check the
temperature limiter and
connecting cables.
Press "
E
RESET".
F3
Burner in a fault
state
Flame signal is al-
ready present at
burner start
Check ignition electro-
des, electrode gaps and
connecting lines.
Press "
E
RESET".
F4
Burner in a fault
state
The flame is not
established at the
end of the safety
time
Check oil supply, igni-
tion electrodes, elec-
trode gaps and
connecting lines,
check nozzle, check so-
lenoid valve coil.
Correct all settings, if re-
quired; clean all con-
taminated parts and
replace faulty compo-
nents.
Press "
E
RESET".
Fault codes
(cont.)
72
Troubleshooting
5692
779
GB
Summary of Contents for VITOLADENS333-F
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