18
Faults with flash code indication
Fault
Red flash
code
Cause of fault
Action
Burner does not start (with
fault indication), indicator il-
luminates
10 x
Wiring fault or internal burner
fault; not all consumers were rec-
ognised; other error
Check the electrical connection
Burner does not start (with
fault indication)
2
×
Motor faulty
Replace motor
2
×
Coupling between motor and oil
pump faulty
Replace coupling
2
×
Oil pump seized up or sluggish
Clean the oil pump, or replace if
necessary
6
×
Servomotor faulty
Replace the servomotor
Burner starts, but no flame
is formed
2
×
Ignition electrodes incorrectly ad-
justed
Set correctly (see chapter
"Checking and adjusting the igni-
tion electrodes")
2
×
Ignition electrodes damp and
contaminated
Clean ignition electrode block
2
×
Insulation body of ignition electro-
des cracked
Replace ignition electrode block
2
×
Ignition transformer faulty
Replace ignition transformer
2
×
Ignition cable faulty
Replace ignition cable
2
×
Pump does not supply oil
Mount pressure and vacuum
gauges at the pump and check
build-up of pressure (see follow-
ing paragraph)
Pump does not supply oil
2
×
Shut-off valves closed at filter or
in oil line
Open valves
2
×
Filter blocked
Clean filter (pre-filter and pump
filter), replace if necessary
2
×
Coupling between motor and
pump faulty
Replace coupling
2
×
Leak in suction line or filter bowl
Retighten fittings. Check the oil
lines for leaks; seal if necessary.
2
×
Oil flow and return hoses inter-
changed
Connect correctly acc. to mark-
ings on pump
2
×
Vacuum in suction line too high
(above 0.35 bar)
Check sizing of oil line cross-sec-
tion. Replace filter. Check the ex-
ternal oil valve.
2
×
External oil valve faulty
Check external oil valve and re-
place if required
Burner starts, but no oil is
injected
2
×
Solenoid valve coil faulty
Replace solenoid valve coil
2
×
Oil pump faulty
Replace oil pump
2
×
Nozzle blocked
Replace nozzle
External light during the
pre-purge phase
4
×
Oil pump solenoid valve fails to
close
Replace oil pump
4
×
Flame monitor faulty
Replace flame monitor
4
×
Ignition electrodes incorrectly ad-
justed or worn
Check the ignition electrodes; re-
place if necessary
Troubleshooting
Diagnosis
5831447
