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ENGLISH
LME SWITCHGEAR: DIAGNOSIS OF CAUSES OF MALFUNCTION AND BLOCKAGE
To activate the diagnosis phase (red light blinking fast) press the button for more than 3 seconds. The table below indicates the meaning of the
block or fault cause according to the number of flashings (always red).
Holding the reset button down for at least 3 seconds, the diagnostics function will be interrupted.
The diagram below shows the operations to be carried out to activate the diagnostic functions even with communication interface through the
"OCI400" connection cable.
Operating position
O n
Visual indication
2 blinks
●●
3 blinks
●●●
4 blinks
●●●●
5 blinks
●●●●●
6 blinks
●●●●●●
7 blinks
●●●●●●●
8 blinks
●●●●●●●●
9 blinks
●●●●●●●●●
10 blinks
●●●●●●●●●●
14 blinks
●●●●●●●●●●●●●●
•
During the fault-finding time, the device is disabled.
•
- The burner is off.
•
- The alarm signal AL "is on terminal 10 which is under voltage.
•
Press the lockout reset button for about 1 second (< 3 seconds) to reactivate the device and start a new cycle.
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Operating position
Visual indication
E K
Colour code table
> 3 s
x x x x xx x x
x x x x xx x x
x x x x xx x x
x x x x xx x x
x x x x xx x x
x x x x xx x x
"AL" to terminal 10
Possible causes
On
No flame at the end of the safe ignition time<TSA>
- Fuel valves malfunctioning
- Flame detector malfunctioning
- Incorrect burner calibration, no fuel
- No ignition faulty ignition transformer
On
- Faulty LP air pressure switch
- No pressure switch signal after T10
- Contact of the LP pressure switch stuck in standby position
On
Extraneous light during the ignition phase
On
- No signal of the LP air pressure switch
- Contact of the LP pressure switch stuck in the operation position
On
Not used
On
No flame signal during normal operation, ignition repetition (limitation of ignition repeti-
tions)
- Faulty fuel valves
- Faulty flame detector
- Incorrect burner calibration
On
Not used
On
Not used
On
Wiring problems or internal device damages
On
CPI contact not closed
Operating position
PC / analyser interface
diagnostics
E K
> 3 s
R e se t
E K
< 3 s
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