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L A S E R
Section 1
ON or the unit comes back on from a power failure, the
operation lamp will flash (0.5 Hz) and both the blower
motor and circulation fan motor will turn to high
revolution. The heater will turn ON if the flame goes out
within 30 seconds from turning ON or returning back
from power failure. The heater will be turned OFF for
safety with the error code of "E-23" if the flame is
detected for more than 30 seconds. However, both the
blower motor and circulation fan will continue to run on
high, until the flame is no longer detected.
1-42 Manual Ignitor Cleaning System
When the power button is OFF, press the "SET" and
"CLEAR" buttons at the same time for 3 seconds, the
unit will make a beep sound, indicating it is in Cleaning
Mode. LCD display will show "CL: 10" ~ "CL: 01" (colon
flashing) and make a countdown at every minute.
The countdown is shown on the right side of the
indicator in double figures as "10, 09 ... 02, 01". The
blower motor turns at Low revolution while the igniter
is on for ten minutes. When the "SET and CLEAR"
buttons are pressed at the same time for 3
seconds during the Manual Igniting Cleaning modes,
the unit will make a beep sound and cancel Cleaning
Mode. When the heater is in operation and the "SET and
CLEAR" switches are pressed at the same time for 3
seconds, the heater will make a beep sound, but the
Manual Ignitor Cleaning mode will not accepted. If
the unit is in the Manual Ignitor Cleaning mode and
the power button is turned ON then the cleaning mode
will be cancelled and the heater will turn on.
1-43 Automatic Ignitor Cleaning System
The heater will turn OFF automatically when the time
becomes 2 AM during operation. After the post purge
finishes, the ignitor will be turned on and the blower
motor turns at Low revolution for cleaning operation
mode. LCD display will change to show "CL:10" ~
"CL:01" (colon flashing) and make a countdown at every
minute. The countdown is shown on the right side of the
display as "10, 09 ... 02, 01". After the countdown
finishes the unit will shift back to normal operation.
1-44 Manual Combustion Operation Mode
To put the unit in Manual Fuel Pump Operation Mode,
first have the power button "ON", and then push and
hold the "DOWN" and "UP" button at the same time for
3 seconds. A buzzer sound will occur. To return to
H E A T I N G
normal operation push these buttons again at the same
time for 3 seconds, the unit will then shift back to the
Normal Operation Mode and will make a buzzer sound.
Manual Fuel Pump Operation Mode cannot be cancelled
by turning off the power button. The unit will turn
off, however, when unit is turned back on, it will be in
Manual Fuel Pump Operation Mode again.
Combustion Indicator.
P3: High Combustion P2: Middle Combustion P1: Low
Combustion
The first display in the SET field is the Combustion
Indicator which starts as "P3". To change down to P2
use the HOUR button, and to change up use the MIN
button There are 2 kinds of sub modes in Manual Fuel
Pump Operation Modes. To shift into these modes push
the "TIMER" button for 5 seconds. Room display can be
switched between the Burner Thermistor Temperature
AD Value and Flame Electric Current AD Value by
pressing the "DAY SELECT" button. The first display is
the Burner Thermistor Temperature AD Value (BTTADV)
mode and is indicated by a flashing °C in the bottom
right corner. The Flame Electric Current AD Value
(FECADV) is indicated by a flashing °F top right side.
Both BTTAD Value and the FECAD Valve are always
updating and are shown on the display. The colon ":"
symbol will flash indicating preheat mode. Once unit
reaches it's set pump mode ":" will disappear.
All units are shipped from factory with the altitude setting
at Low. To change the Altitude Setting, turn the unit off (if
not already off), press the "DOWN" and "UP" button at
the same time for 3 seconds (this is the same for getting
into the Error Codes History), then press the "DOWN"
button once. The display will show "AL Lo". Press the
"AUTO" and "TIMER" button at the same time for 3
S Y S T E M S
SET
Normal Operation
Set
Mode
Temperature
1
Manual
Combustion
Fuel Pump
Indicator
Operation Mode
2
1-45 High Altitude Setting Mode
Description
ROOM
Room
Temperature
Room Temperature
Value
Burner Theremistor
Temp. AD Value
Flame Electric Current
AD Value
7
S E R V I C E M A N U A L
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Troubleshooting
