The multicolour «LED» is the key indicating element for both
visual diagnosis and interface diagnosis.
s
Red
l
Yellow
o
Green
Key
m
Off
l
Yellow
o
Green
s
Red
Diagnosis of cause of fault
After lock-out, the red fault signal lamp remains steady on.
In that condition, the visual diagnosis of the cause of fault according to the
error code table can be activated by pressing the lock-out reset button for
more than 3 seconds.
During the time the cause of fault is diagnosed, the control outputs are
deactivated.
z
Burner remains shut down
z
Fault status signal «AL» at terminal 10 is activated
The diagnosis of the cause of fault is quit and the burner switched on
again by resetting the burner control.
Press lock-out reset button for about 1 second (< 3 seconds).
Connection diagram and internal diagram
LMO14
LMO24 - LMO44
Control sequence
LMO14
Colour code table
Status
Colour code
Colour
Oil pre-heater heats,
waiting time «tw»
lllllllllll
Yellow
Ignition phase, ignition
controlled
lmlmlmlmlml
Yellow-off
Operation, flame o.k.
oooooooooooo
Green
Operation, flame not o.k.
omomomomomo
Green-off
Undervoltage
lslslslslsl
Yellow-red
Fault, alarm
sssssssssss
Red
Output of fault code (refer
to Fault code table)
smsmsmsmsm
Red-off
Extraneous light prior to
burner start-up
osososososo
Green-red
Interface diagnosis
ssssssssssssss
Red flicker light
Error code table
Blink code
Possible cause
2 blinks **
No establishment of flame at the end of TSA
z
Faulty or soiled fuel valves
z
Faulty or soiled flame detector
z
Poor adjustment of burner, no fuel
z
Faulty ignition
3 blinks ***
Free
4 blinks ****
Extraneous light on burner startup
5 blinks *****
Free
6 blinks ******
Free
7 blinks *******
Too manny losses of fleme during operation
(limitattion og the number of repetitions)
z
Faulty or soiled fuel valves
z
Faulty or soiled flame detector
z
Poor adjustment of burner
8 blinks ********
Time supervision oil pre-heater
9 blinks *********
Free
10 blinks **********
Wiring error or internal error, output contacts
1
2
6
7
4
5
10
11
12
W
SB
R
L
N
M
Z
BV1
AL
Si
8
3
OW
OH
N
8
3
QRB
QRC
br
bl
sw
1
7130a01e/0700
9
EK2
EK1
μC control
K1
K2
K3
FSV
μC2
LED
kbr
μC1
1
2
6
7
4
5
10
11
12
W
SB
R
L
N
M
Z
BV1
AL
Si
8
3
O W
O H
N
8
3
Q R B
Q R C
br
bl
sw
1
7130a02e/0700
9
EK2
EK1
µC control
K1
K2
K3
K4
BV2
LED
kbr
FSV
µC 2
µC 1
R
W
SB
OH
OW
M
Z
BV1
FS
A´
A
B
C
D
1
8
3
3
6
4
11
12
t1
t3
t3n
TSA
tw
Z
FS
6
11
12
7130d02e/0700
Only with LMO14.113A2: re-ignition
t3n
t3n
