10
EN
420010268002
Blu 700.1 P Low Nox
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
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
«LP» faulty
- Loss of air pressure signal after «t10», - «LP» welded in normal position
4 blinks
on
Extraneous light when burner is started up
5 blinks
on
Time out «LP»
- «LP» welded in working position
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
Free
9 blinks
on
Free
10 blinks
off
Wiring error or internal error, output contacts, other faults.
14 blinks
on
CPI contact not closed
