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ENGLISH
DIAGNOSIS OF CAUSE OF DEFECTS LMO 44
After blockage the red warning light LR will remain constantly on. In these conditions it is possible to activate the visual dia-
gnosis of cause of defects according to the table of error codes by pressing unblock button PS for more than 3 seconds.
Press the unblock button again for at least 3 seconds to activate interface diagnosis.
The following sequence will activate the diagnosis of the cause of defect:
Blinking code
Probable cause
2 blinks
Flame not stabilised by the end of T2
••
Faulty or dirty fuel valves
Faulty or dirty
fl
ame detector
Scarce burner regulation, no fuel
Faulty ignition
3 blinks
Free
•••
4 blinks
Unexpected lights at burner ignition
••••
5 blinks
Free
•••••
6 blinks
Free
••••••
7 blinks
Too much
fl
ame loss during operation (repetition limitation)
•••••••
Faulty or dirty fuel valves
Faulty or dirty
fl
ame detector
Scarce burner regulation
8 blinks
Pre-heater oil control time
•••••••••
9 blinks
Free
•••••••••
10 blinks
Electrical connection error or internal error, output contacts
••••••••••
Table of error codes
The cause of the error will eventually be diagnosed and the control outputs will be deactivated.
- The burner remains still
- The fault warning lamp LR is activated at terminal 10
The diagnosis of the cause of defect will stop and the burner will start working again by resetting the burner control device.
Press the reset button for about 1 second (< 3 seconds).