Color code table for multicolor signal lamp (LED)
Status
Color code
Color
Waiting time «tw», other waiting states
❍
...................................................................................
Off
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
Connection diagram and control sequence of LME21…
RESET
M
V1
V2
Z
AL
T
T
R / W
GP
STB
7101a22e/0609
LP
EK2
K1
K2/1
K3
K4
K2/2
H
Si
N
SB / R
W / GP
AL
LP
V1
(LR) V2
Z
FS
tw
t1
t3n
TSA
t4
7101d05/0409
A
B
B´
C
D
t3
t10
M
AGK25... PTC resistor
AL
Error message (alarm)
V...
Fuel valve
CPI
Closed Position Indicator
DBR...
Wire link
EK
Lockout reset button (internal)
EK2
Remote lockout reset button
ION
Ionization probe
FS
Flame signal
FSV
Flame signal amplifier
GP
Pressure switch
H
Main switch
HS
Auxiliary contactor, relay
K1...4
Internal relays
KL
Low-fire
LK
Air damper
LKP
Air damper position
LP
Air pressure switch
LR
Load controller
M
Fan motor
R
Control thermostat / pressurestat
SA
Actuator
STB
Safety limit thermostat
Si
External pre-fuse
t
Time
W
Limit thermostat / pressure
switch
Z
Ignition transformer
ZV
Pilot gas valve
A
Start command (switching on
by «R»)
B-B´
Interval for establishment of
flame
C
Operating position of burner
reached
C-D
Burner operation (generation
of heat)
D
Controlled shutdown by «R»
t1
Prepurge time
t3
Preignition time
t3n
Postignition time
t4
Interval between ignition
«Off» and release of «V2»
t10
Specified time for air pressure
signal
t11
Programmed opening time for
actuator «SA»
t12
Programmed closing time for
actuator «SA»
TSA
Ignition safety time
tw
Waiting time
CONTROL BOXES LME21-LME22
Connection diagram and control sequence LME22… / LME23…
NT
µ
C control
RESET
EK
FSV
ION
1
2
3
M
4
BV1
5
BV2
7
Z
10
AL
T
12
R / W
GP
STB
9
7101a02e/0606
pa
6
LP
8
EK
11
K1
K2/1
K3
K4
K2/2
H
Si
SA
L
N
QRC
br bl
sw
1
2
12
Nur LME23...
SB / R
W / GP
AL
LP
SA
BV1
(LR) BV2
Z
FS
tw
t1
t3n
TSA
t4
7101d02/0606
t11
t12
EK2
12
10
3
7
4
5
6
1
8
A
B
B´
C
D
9
t3
t10
LK
M
I
11
EN
420010318203
Max Gas 350 - 500 P/P AB
18