26
S E R V I C E
M A N U A L
L A S E R H E A T I N G S Y S T E M S
4-2
Control Circuit Board
Time Chart
L A S E R H E A T I N G S Y S T E M S
Trouble Shooting
Section 4
Sequence : MA-252 series Laser300 / Laser530 / Laser560 / Laser730
Basic Operation
(
normal operation 1
)
Fuel Recovery
Figure1
ON/OFF sw
ON
ON
AUTO button
▲MIN. button
Within T23
▼HOUR button
SET button
TIMER button
Flame sensor
Detected
Bm speed sensor
Detected
⑤
①
②
④
⑤
T7
T1
T2
T3
T4
T9
T8
T8
T9
T9
T11
ON
L1
H
M1
M2
H
M
L
M
H
M
M1
M2
H1
H
H
M
L
M
H
T5
T6
T21
T10
T10
H
M
H
M
L
M
H
M
A
B
A
B
Flash3
Lit
Lit
Flash1
Flash2
Flash2
FlashB
LitC
LitC
LitB
LitA
LitB
LitC
time
set temperature,room temperature
time
set temperature,room temperature
time
room temperature and set temperature
Flashing frequency
Burning mode indicator
①RT>ST
Flash1 : 2
.0Hz
A :
②RT>ST+1.0℃
Flash2 : 0
.5Hz
B :
③RT>ST+2.0℃
Flash3 : 1
.0Hz
C :
④RT≦ST
⑤RT≦ST-1.0℃
B
uzzer
⑥RT>ST+6.0℃
A : on 100msec
B : on 500msec
Title
Class
Remarks
Burning mode
indicator
On lamp
CHILD LOCK
indicator
Room thermistor
DAY SELECT button
POWER SAVER button
CLEAR button
CHILD LOCK button
Igniter
Blower motor
Fuel pump
Fan motor
Buzzer
AUTO
indicator
TIMER
indicator
other
indicator
POWER SAVER
indicator