Herrmann HLZ 45 A/BV Montage- Und Betriebsanleitung Seite 31

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8. Malfunction diagnosis
Diagnosis
1. Ontrol box/Communication interface − Issued error codes
3: Time-out rotational speed.
4: No formation of flame during the safety time. Oil supply: Excessive low pressure in the
5: Flame blow-off during the burner's operation. Oil supply: Excessively low pressure
10: Error of remote unlocking.
11: Formation of flame during the pre-aeration
and pre-ignition.
15: Time-out of oil pre-heater.
32: Power supply.
48: Interruption of bus communication.
2. Blower
Blower is rotating at maximum speed.
Blower doesn't start.
Blower is running with heavy noise.
3. Pump motor
Motor doesn't start.
4. Ignition
No formation of ignition spark.
Cause
Electrical wiring between oil firing unit and
blower is defective.
Defective blower.
suction line.
Excessive pressure in the combustion
chamber.
Defective electrical wiring.
Defective pump motor.
No development of the ignition spark.
Defective oil pump.
Depending on start-up adjustment:
Defective coil of solenoid valve -
defective 1./2. stage
Defective fire eye.
Defective oil nozzle.
in the suction line.
Defective flame monitoring.
Defective motor for the pump.
Defective oil pump.
Depending on start-up adjustment:
Defective coil of solenoid valve -
defective 1st/2nd stage.
Leaking air/exhaust system.
Burner is running unstable and requires
repeated external corrective actions
(5 x suppressions within 15 minutes).
Depending on start-up adjustment:
Defective coil of solenoid valve -
defective 1st/2nd stage.
Defective fire eye.
Defective oil pre-heater.
Defective electrical wiring of oil pre-heater.
Under-voltage < 190 VAC ,
over-voltage > 260 V AC, voltage cut-off
Automatic re-start (no fault shutdown).
Bus communication wiring is defective or
interrupted.
Defective electrical wiring.
Defective electrical wiring.
Defective arrangement of the motor shaft.
Defective condensator.
Sluggishness of bearing.
Sluggishness of oil pump.
Defective ignition device.
Defective ignition cable.
Defective oil firing unit.
Defective insulating of the initiating electrode. Exchange the initiating electrodes.
The position of the initiating electrodes
are not correct.
The initiating electrodes are very dirty.
Rectification
Exchange the cables.
Exchange the blower.
Check oil supply in accordance with the
specification.
Check the flue gas system.
Check the level of pollution of the boiler's
heat exchanger and carry out cleaning, if
necessary.
At condensing value boilers: Secure outflow
of condensation.
Check electrical wiring.
See 3: Pump motor.
See 4: Ignition.
See 5: Oil pump.
See 6: Solenoid valve.
See 7: Fire eye.
See 8: Oil nozzle.
Check oil supply in accordance with the
specification.
See 7: Flame monitoring.
Exchange the pump motor.
Exchange the oil pump.
Exchange the coil of solenoid valve for the
first/second stage.
Check the air/exhaust system.
Exchange the coil of the solenoid valve
for the first/second stage.
Exchange the flame monitor.
Exchange the oil pre-heater.
Check the electrical wiring.
Check the power supply.
Check the electrical wiring.
Check the electrical wiring.
Check the electrical wiring.
Exchange the blower.
Exhcnage of condensator.
Exhcange of motor.
Exhcange of oil pump.
Exchange the ignition device.
Exchange the ignition cable.
Exchange the oil firing unit.
Adjust the position of the initiating electrodes .
by means of a setting gauge
Clean the initiating electrodes.