Power Failure Recovery System; Reigniting Operation; Backup Life; Deleting The Error Code History - Toyotomi Laser 300 Service Manual

L A S E R
Section 1
cycle, before turning back on. The circulation fan motor
will remain on during this time.

1-31 Reigniting Operation

Start to reignite (T1) by turning the operation switch ON
if the reigniting time becomes over 3 seconds after
turning the operation switch OFF during combustion.
(Include the unit OFF from the Save Mode and Timer
Operation Mode.) Also, the fan motor keeps operating in
this condition.
1-32 Error Codes History
To show the error codes history, first turn the unit off (if
not already in off), then push the "DOWN" and "UP"
button at the same time for 3 seconds, and a buzzer will
sound. To get out of the error codes history, press the
"DOWN" and "UP" button again at the same time for 3
seconds. This will indicate the past 9 error codes. The
error codes are indicated as "XE YY". (X stands for 1~9
with 1 being the most recent. Error codes more then 9
codes ago will be deleted. YY stands for the error code
or Altitude Setting – see High Altitude Setting Mode.)
If you press the "DOWN" button, the display shows
"AL YY"➞"9E YY"➞····➞"1E YY"➞"AL YY"➞····
If you press the "UP" button, the display shows
"AL YY"➞"1E YY"➞····➞"9E YY"➞"AL YY"➞"1E
YY"➞····
When the unit is turned ON during Error Codes History,
the unit exits the Error Code History and starts normal
operation.
1-33 Igniting Failure Error Lock
If the igniting fault error "E-2" occurrs 3 times in a row,
then the display will show "E-22", and it is not able to
reset by the power button but it can be reset by
unpluging the power cord for at least 30 minutes.
Burner Thermistor Normal Detecting
1-34
Temperatures
L300 / L530 : above 120°C or 248 F normal
L560 / L730 : above 100°C or 212 F normal

1-35 Power Failure Recovery System

The error codes, weekly timer setting, ˚C/˚F setting,
Power Saver operation, and fuel pump flow setting are
stored in the involatile memory, and will not be erased
6
S E R V I C E M A N U A L
H E A T I N G
due to power failure. The time, however, is stored by the
capacitor, and will only last for so long. This could be 30
minutes or longer.
Back up time is more than 30 minutes(reference value)
The life guarantee is more than 10 years.
To clear the error code history press the "AUTO" switch
for 3 seconds while in the Error Codes History. The
display will show "Er CL", which will flash 3 times, and
then switch to time display.
When the electrical frequency of the power supplied to
the unit is abnormal and the power button is ON the unit
will display an error code of "E-0" and the unit will not
start. To reset, turn the power button OFF and then
back ON.
The judging range for the frequency is 55Hz
<65Hz. Normal frequency is 60Hz.
If there is a problem with the power button the unit will
make a long buzzer beep sound (by 100msec. interval.),
which will indicate that a short circuit has occurred.
If the power button short circuit condition occurs for
more than 30 seconds, then the following happens:
• Flash all on display
• Flash the power LED
• Make a beep sound
• A ll buttons are invalid. No beep sound by pressing
T o c a n c e l b e e p i n g n o i s e turn the power button
OFF.
The unit will turn OFF with "E-0" when the low voltage
condition keeps for more than 10 seconds +/- 2
seconds.
If the flame is detected when the power button is turned
S Y S T E M S

1-36 Backup Life

1-37 Deleting The Error Code History

1-38 Detection of Abnormal Electrical
Frequency Condition
1-39 Power Button Malfunction
buttons.
1-40 Low Voltage Detection
1-41 Forced Flame Detection
Description
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