Electronic Expansion Valve Control; Test Operation Control; Prevent To Restart For 3 Minutes (3 Minutes St) - Fujitsu AU G12LVLB Series Service Instruction

1-10. 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 following values.
The compressor frequency, the temperatures detected by the discharge temperature sensor, the
indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.
(1) Pulse range of EEV
AO*G12LALL
AO*G14LALL
AO*G18LALL
(2) The EEV is set up at 480 pulses when the compressor is stopped.
(3) Intialization ( Input of 528 pulses toward closing direction) is operated under
the following condition.
* When the power is turned on.
* 4 hours has passed since the last initialization, and 3 minutes has passed after the compressor stop.
(If 12 hours has passed since the last initialization, the compressor is compulsorily stopped.)

1-11. TEST OPERATION CONTROL

With Wired Remote Controller
Under the condition where the air conditioner stops, press the MODE button and the FAN button
simultaneously for 2 seconds or more, and the test operation control mode will appear.
During test running, "
Set the test operation mode, and the compressor will continue to run regardless of whatever
the room temperature sensor detects.
The test operation mode is released if 60 minutes have passed after setting up the test operation.
With Wireless Remote Controller
Under the condition where the air conditioner runs, press the TEST RUN button, and
the test operation control mode will appear.
During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously.
Set the test operation mode, and the compressor will continue to run regardless of whether the room
temperature sensor detects.
The test operation mode is released if 60 minutes have passed after setting up the test operation.
With Wired Remote Controller
With "Monitor Mode Screen" displayed, press and hold the [MENU] button,
[<] button and [ENTER] button simultaneously for at least 2 seconds.
Setting item selection screen is displayed.
Select the number"09" of the item to be set with the [< ] or [> ] button,
press the [ENTER] button to switch to the Setting Screen.
The test operation screen is displayed.
Press the [ENTER ] button to test operation begins.
Test operation is completed after about an hour.
1-12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )
The compressor won't enter operation status for 3 minutes after the compressor is stopped,
even if any operation is given.
1-13. 4-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 4-way valve is switched in 3 minutes later after the compressor stopped.
Operation Pulse range
Cooling/ Dry
60 480 pulse
Heating
(3-wire)
" will display on the remote controller display.
(2-wire)
01-18