Troubleshooting - Desa MASTER BV 69 Manual Del Proprietário

4
GB

TROUBLESHOOTING

OBSERVED FAULT
The fan does not come on
and the flame does not light
The fan comes on but the
flame does not light or does
not remain lit
The fan comes on and the
flame lights, but produces
smoke
The heater does not switch
off
The fan does not switch off
POSSIBLE CAUSE
1. No electric current
2. Motor winding burnt out or broken
1. Ignitor is not functioning
2. Faulty flame cut out mechanism
3. Non-functioning photoelectric cell
4. Fuel is not reaching the burner or a suffi-
cient a mount is not arriving
5. Electric valve is not functioning
1 Insufficient air for combustion
2 Too much air for combustion
3 Fuel is dirty or contains water
4 Air has filtered into the fuel circuit
5 Inadequate quantity of fuel in burner
6 Too much fuel in burner
1.Defective electric valve seal
1.Faulty fan thermostat
SOLUTION
1a Check the characteristics of the electrical system
(220-240V - 50 Hz)
1b Check that the switch works and is in the correct
position
1c Check that the fuse has not blown
2 Replace the motor
1a Check the connections of the ignition cables to
the electrodes and transformer
1b Check the position of the electrodes and the
distance between them, in accordance with the
diagram
1c Check that the electrodes are clean
1d Replace the ignition transformer
2 Replace the mechanism
3 Clean or replace the photoelectric cell
4a Check that the connection between the pump and
the motor is intact
4b Check that air has not filtered into the fuel circuit,
checking the tubes and the filter seal
4c Clean or, if necessary, replace the nozzle
5a Check the electrical connection
5b Check the TS thermostat (Fig. 8)
5c Clean or, if necessary, replace the electricvalve
1a Remove anything blocking or obstructing theaspi-
ration and/or airflow ducts
1b Check the position of the air regulation ring
1c Clean the burner disc
2 Check the position of the air regulation ring
3a Replace the fuel with clean fuel
3b Clean the fuel filter
4 Check the condition of the tubes and the sealof the
fuel filter
5a Check the pump pressure
5b Clean or replace the nozzle
6a Check the pump pressure
6b Replace the nozzle
1.Replace the electric valve part
2.Replace the TR thermostat (Fig. 8)