Toyotomi Laser 300 Service Manual page 34

L A S E R L A S E R
Section 4
Control Circuit Board
4-2
Time Chart
Sequence : MA-252 series
High Limit
ON/OFF sw
ON
AUTO button
▲MIN. button
▼HOUR button
SET button
TIMER button
DAY SELECT button
POWER SAVER button
CLEAR button
CHILD LOCK button
Flame sensor
Detected
Bm speed sensor
Detected
High limit
ON
Burner
thermistor
Room thermistor
⑤
Igniter
OFF
Blower motor
Fuel pump
Fan motor
Buzzer
On lamp
Burning mode
indicator
AUTO
indicator
TIMER
indicator
POWER SAVER
indicator
CHILD LOCK
indicator
set temperature
room temperature
other
indicator
room temperature and set temperature
①RT＞ST
②RT＞ST+1.0℃
③RT＞ST+2.0℃
④RT≦ST
⑤RT≦ST-1.0℃
⑥RT＞ST+6.0℃
Title
32
S E R V I C E M A N U A L
H E A T I N G H E A T I N G
Laser300 / Laser530 / Laser560 / Laser730
Burner Thermistor
ON
Not Detected Detected
Detected
OFF
less than Ⓐ
⑤
T11
over T26
H M
H M2
H M
D
Lit Flash2
LitC
FlashB
set temperature
E - 12 time
room temperature
Flashing frequency
Flash1 : 2.0Hz
Flash2 : 0.5Hz
Flash3 : 1.0Hz
Buzzer D : on 100msec off 100msec 25times
Burner thermistor Ⓐ
Laser300 / 530 : 200±40kΩ
Laser560 / 730 : 450±90kΩ
S Y S T E M S S Y S T E M S
Trouble Shooting
Not Detected
more than Ⓐ
T25 T11
H M
H1 H
H M
D
Lit Flash2
LitC
E - 13
Burning mode indicator
A :
B :
C :
Class Remarks
Figure7
time