12
420010291600
Max 1 - 4 Low NOx
EN
Connection diagram and internal diagram LMO14...
Control sequence LMO14...
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
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/1002
Only with LMO14.113B2: re-ignition
t3n
t3n
AL Alarm
device
BV... Fuel
valve
EK1
Lockout reset button
EK2
Remote lockout reset button
FS
Flame signal
FSV
Flame signal amplifier
K...
Contacts of control relay
kbr Cable link (required only
when no oil preheater is used)
LED
3-color signal lamp
M Burner
motor
OW
Release contact of oil preheater
OH Oil
preheater
QRB... Photoresistive flame detector
QRC... Blue-flame detector
bl = blue, br = brown, sw = black
R
Control thermostat or
pressurestat
SB
Safety limit thermostat
Si
External primary fuse
W
Limit thermostat or pressure
switch
Z Ignition
transformer
TSA
Ignition safety time
tw Waiting
time
t1 Prepurge
time
t1´ Purge
time
t3 Preignition
time
t3n Postignition
time
t4
Interval from flame signal to
release of «BV2»
A´
Start of startup sequence with
burners using an «OH»
A
Start of startup sequence with
burners using no «OH»
B
Time of flame establishment
C Operating
position
D
Controlled shutdown by «R»
Color code table for multicolor signal lamp (LED)
Status Color
code
Color
Waiting time «tw», other waiting states
❍
...................................................................................
Off
Oil preheater on, waiting time «tw»
●
................................................................................... Yellow
Ignition phase, ignition controlled
● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍
Flashing yellow
Operation, flame o.k.
❑
................................................................................... Green
Operation, flame not o.k.
❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍
Flashing green
Extraneous light on burner startup
❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲
Green-red
Undervoltage
● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲
Yellow-red
Fault, alarm
▲
................................................................................... Red
Error code output (refer to «Error code
table»)
▲ ❍ ▲ ❍ ▲ ❍ ▲ ❍ ▲ ❍ ▲ ❍ ▲ ❍ ▲ ❍
Flashing red
Interface diagnostics
▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
Red flicker light
Legend:
....... Steady on
▲
Red
❑
Green
❍
Off
●
Yellow
Error code table
Red blink code of
«AL» at
Possible cause
signal lamp (LED))
term. 10
2 blinks
on
No establishment of flame at the end of «TSA»
- Faulty or soiled fuel valves - Faulty or soiled flame detector
- Poor adjustment of burner, no fuel - Faulty ignition equipment
3 blinks
on
Free
4 blinks
on
Extraneous light on burner startup
5 blinks
on
Free
6 blinks
on
Free
7 blinks
on
Too many losses of flame during operation
(limitation of the number of repetitions)- Faulty or soiled fuel valves.
- Faulty or soiled flame detector - Poor adjustment of burner.
8 blinks
on
Time supervision oil preheater
- Oil preheater failed 5 times during prepurging
9 blinks
on
Free
10 blinks
off
Wiring fault or internal fault, output contacts,other faults.
on
3 times temporary fault of the output contacts
