31
UK
DIAGNOSIS OF LMO EQUIPMENT FAULTS AND LOCK OUT
Description of operating anomalies
Visual indication
Possible causes
2 flashes
¬¬
No flame signal
•
Faulty fuel valves
•
Faulty flame detector
•
Incorrect burner setting, no fuel
•
No ignition
3 flashes
¬¬¬
Not used
4 flashes
¬¬¬¬
Stray light on ignition
5 flashes
¬¬¬¬¬
Not used
6 flashes
¬¬¬¬¬¬
Not used
7 flashes
¬¬¬¬¬¬¬
No flame signal during operation
•
Faulty fuel valves
•
Faulty flame detector
•
Incorrect burner setting, no fuel
8 flashes
¬¬¬¬¬¬¬¬
Anomalies in fuel preheating time
9 flashes
¬¬¬¬¬¬¬¬¬
Not used
10 flashes
¬¬¬¬¬¬¬¬¬¬
Incorrect electrical connection or damage to
equipment
MAINTENANCE
WARNING.
All operations should be performed with the electrical supply disconnected. After
removing the casing, it is possible to clean the photo resistance, inspect the motor, the elec
-
tromagnetic valve and the transformer.
PHOTORESISTOR
Remove and clean the sensor carefully. Use a clean, dry cloth. When replaced make sure it
is properly attached.
FUEL PUMP FILTER
Close the fuel aspiration gate, remove the pump cover, take out the mesh cartridge, wash it
with petrol and re-assemble carefully.