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8. Malfunction diagnosis
Fault
1. Oil firing unit
Fault signal lamp is not lighting
Fault signal lamp is lighting
2. Motor
Motor will not start
Motor is running with heavy noise
3. Ignition
No build up of ignition spark
Slight ignition spark existing
4. Oil pump
Fluctuating oil pressure, oil pump runs with Leaking suction line (air entry)
heavynoise, oil pressure does not build up Oil supply is not in accordance with standard settings
5. Solenoid valve
Solenoid valve does not open
6. Flame monitoring (optically)
Fault shutdown without flame formation
Fault shutdown with flame formation
7. Flame monitoring (Ionisation)
Fault shutdown with/without
formation of flame
8. Nozzle
Irregular spraying, high emissions
of CO
and soot
²
9. Mixing device
Air nozzle / re-circulation tube
has heavy contamination
10. Gebläse
Blower provides too little air
Blower runs with heavy noise
Cause
No voltage is present
Boiler temperature control has not
been set correctly
Oil firing unit set to malfunction
Oil firing unit is defective
Terminal socket wring is not correct
Decode cause of malfunction through LED flashing diode Remedy of decoded malfunction
according to Chapter. 2.6 (only for Siemens LMO 14)
Defective release thermostat in oil pre-heater
Capacitor is defective
Tight bearing
Tight oil pump
Defective motor
Defective bearing
Defective oil pump
Defective ignition unit
Defective ignition wire
Defective oil firing unit
Defective insulator
Improper position of ignition electrodes
Very dirty ignition electrodes
Suction line is not de-aerated
Oil stop valve is locked
Defective coupling
Dirty oil pump filter
Dirty preliminary filter
Defective oil pump gear
Discharge of paraffin (+4°C)
Heating oil no longer free-flowing (-1°C)
Defective solenoid valve coil
Defective oil firing unit
Secondary light
Defective flame detector
Dirty glass insert of flame detector /
light tube
Sensitivity setting of the flame detector
is not correct (only for Honeywell IRD)
Earth contact on the combination electrode
for ignition and ionisation
Defective nozzle
Oil pressure not in accordance with requirements
Defective diaphragm valve
Setting of burner is not correct
Nozzle sprays irregular
Nozzle is after-dripping
Improper type of nozzle
(spray angle, spraying characteristic curve, size)
Contaminated blower wheel
Damaged blower wheel
Blower wheel not properly positioned
Remedy
Check wiring
Adjust properly
Correct the fault
Exchange
Check wiring
Check oil pre-heater
according to error diagnosis, point 2 ... 10
Exchange oil pre-heater
Exchange capacitor
Exchange motor
Exchange oil pump
Exchange motor
Exchange motor
Exchange oil pump
Exchange ignition unit
Exchange ignition wire
Exchange oil firing unit
Exchange ignition electrode
Position ignition electrodes
Clean ignition electrodes carefully
Check oil supply (see Chapter 3.5)
Check oil supply (see Chapter 3.5)
De-aerate suction line
Open oil stop valve
Exchange coupling
Carefully clean oil pump filter
Clean / exchange preliminary filter
Exchange oil pump
Install cold insulation
Install cold insulation
Exchange solenoid valve coil
Exchange oil firing unit
Remove secondary light
Exchange flame detector
Clean carefully glass insert of flame detector /
light tube
Adjust sensitivity of flame detector according
to specifications (see Chapter 2.4)
Remove moisture in the vicinity of the com-
bination electrode for ignition and ionisation
Exchange combination electrode for ignition
and ionisation, remove deposits as well as
coating from the electrodes
Exchange nozzle
Adjust oil pressure
Exchange diaphragm valve
Adjust burner in accordance with
basic setting table (see Chapter 5)
Exchange nozzle, or replace diaphragm valve
Exchange diaphragm valve
Use nozzle in accordance with the
requirements (see Chapter 4)
Clean blower wheel carefully
Exchange blower wheel
Position blower wheel properly
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