LMO EQUIPMENT
The release pushbutton on the equipment is the main component for accessing all the diagnostic functions (activation and
deactivation) as well as for releasing the control and checking device.
The release pushbutton has a multicoloured led which indicates the state of the control and checking device during ope-
ration and when the diagnostic function is in use.
EQUIPMENT STATE INDICATORS
Description
Condition
Standby, other intermediate states
Fuel preheating "on", waiting time 5s.max
Ignition stage
Correct operation
Incorrect operation, current level of
flame detector below permitted minimum
Drop in voltage
Burner lock out
Fault (see table on page 8)
Stray light before burner ignition
Rapid flashing for diagnostics
If the burner is locked out, there will be a steady red light on the lock out pushbutton.
By pressing the transparent pushbutton, the control and checking device will be released.
By pressing it for more than 3 seconds, the diagnosis stage will be activated (red light flashes rapidly).
The table below describes the causes of the lock out or fault in relation to the number of flashes (always red).
The diagnosis function is interrupted by pressing the release button for at least 3 seconds.
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
Colour sequence
No light
Yellow
Yellow, flashing
Green
Green, flashing
Alternating yellow red
Red
Red, flashing
Alternating green red
Red, rapid flashing
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