Electronic Expansion Valve Control; Test Operation Control; Prevent To Restart For 3 Minutes ( 3 Minutes St ); Four-Way Valve Extension Select - Fujitsu AS G09LTCA Series Service Instruction

10. ELECTRONIC EXPANSION VALVE CONTROL

The most proper opening of the electronic expansion valve is calculated and controlled under the present
operating condition based on the Table16.
The compressor frequency, the detected temperature by the discharge temperature sensor,
the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.
( Table16 : The pulse range of the electronic expansion valve control )
AO*G07LUC/LUCA
AO*G09LUC/LUCB
AO*G12LUC
AO*G14LUC
AO*G09LTC
AO*G12LTC
The expansion valve is set at 480 pulses 110seconds after the compressor had stopped.
Initialization will start after 24 hours pass from the last initialization, and the compressor stops
At the time of supplying the power to the outdoor unit, the initialization of the electronic
expansion valve is operated (528 pulses are input to the closing direction).

11. TEST OPERATION CONTROL

[ Operation method ]
The outdoor unit, may not operate, depending on the room temperature.
In this case, keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds.
The Operation lamp and Timer lamp will begin to flash simultaneously during cooling test run.
Then, heating test run will begin in about 3 minutes when HEAT is selected by the remote control operation.
(When the air conditioner is running by pressing the test run button, the Operation lamp and Timer lamp
will simultaneously flash slowly.)
[ Release ]
Perform the test operation for 60 minutes.
Pressing the MANUAL AUTO button of the indoor unit for more than 3 seconds.
[ Using the Wired remote control (Option) ]
If the Operation lamp is on, press the START/STOP button to turn it off.
Press the MODE and the FAN buttons at the same time for more than two seconds
to start the test operation.
The operation lamp will light up and "o1" will be displayed on the set temperature display.
[ Release ]
Perform the test operation for 60 minutes.
Pressing the START/STOP button will stop the test operation.

12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )

The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is stopped,
even if any operation is given.

13. FOUR-WAY VALVE EXTENSION SELECT

At the time when the air conditioner is switched from the cooling mode to heating mode, the
compressor is stopped, and the four-way valve is switched in 3 minutes later after
the compressor stopped.
Operation mode
Cooling / Dry mode
Between 60 to 480 pulses.
Heating mode
Cooling / Dry mode between 60 to 480 pulses.
Heating mode between 45 to 480 pulses.
01-13
Pulse range