420010291600 Max 1 - 4 Low NOx
EN
Connection diagram and internal diagram LMO14...
EK1
µC1
LED
K1
K3
2
10
1
SB
R
W
AL
Si
L
N
7130a01e/0700
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
Status
Waiting time «tw», other waiting states
Oil preheater on, waiting time «tw»
Ignition phase, ignition controlled
Operation, flame o.k.
Operation, flame not o.k.
Extraneous light on burner startup
Undervoltage
Fault, alarm
Error code output (refer to «Error code
table»)
Interface diagnostics
Legend:
Red blink code of
signal lamp (LED))
2 blinks
3 blinks
4 blinks
5 blinks
6 blinks
7 blinks
8 blinks
9 blinks
10 blinks
µC control
µC2
K2
8
3
4
5
6
7
9
kbr
8
3
OW
EK2
OH
N
1
M
Z
BV1
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
Color code table for multicolor signal lamp (LED)
Color code
❍ ...................................................................................
● ...................................................................................
● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍ ● ❍
❑...................................................................................
❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍ ❑ ❍
❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲ ❑ ▲
● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲ ● ▲
▲...................................................................................
▲ ❍
▲
▲
....... Steady on
❍
Off
Error code table
«AL» at
Possible cause
term. 10
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
on
Free
on
Extraneous light on burner startup
on
Free
on
Free
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.
on
Time supervision oil preheater
- Oil preheater failed 5 times during prepurging
on
Free
off
Wiring fault or internal fault, output contacts,other faults.
on
3 times temporary fault of the output contacts
Control sequence LMO14...
A´
A
R
W
SB
tw
OH
FSV
OW
M
11
12
BV1
Z
QRB
FS
Only with LMO14.113B2: re-ignition
QRC
bl
sw
Z
br
FS
▲ ❍
▲ ❍
▲ ❍
▲ ❍
▲ ❍
▲
▲
▲
▲
▲
▲
▲
▲
Red
●
Yellow
12
B
C
t3n
t1
TSA
t3
t3n
t3n
7130d02e/1002
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»
Flashing yellow
Flashing green
Green-red
Yellow-red
▲ ❍
▲ ❍
Flashing red
▲
▲
▲
Red flicker light
❑
Green
D
1
8
3
3
4
6
11
12
6
11
12
Color
Off
Yellow
Green
Red