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14. Servicing Mode
14.1 Auto OFF/ON Button
Auto OFF/ON
Button Pressed
Auto OFF/ON
Button Pressed
Auto OFF/ON
Button Pressed
5 sec
5 sec
Auto Operation Test Run Operation
(Forced Cooling Operation)
Stop Various Setting Mode Stop
1 AUTO OPERATION MODE
The Auto Operation will be activated immediately once the Auto OFF/ON button is pressed. This operation
can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.
2 TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)
The Test Run Operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5
seconds. A “beep” sound will be heard at the fifth seconds, in order to identify the starting of this operation.
3 VARIOUS SETTING MODE
The Various Setting Mode will be activated if (within 20 seconds of Test Run Operation) the Auto OFF/ON
button is pressed for more than 5 seconds. 2 “beep” sounds will be heard to identify the starting of this
operation.
Under Various Setting Mode, user could perform the following operation:
i. Press Auto OFF/ON button to toggle remote control receiving sound.
- Short “beep”: Turn ON remote control receiving sound.
- Long “beep”: Turn OFF remote control receiving sound.
After Auto OFF/ON button is pressed, the 20 seconds counter for Remote Control Receiving Sound OFF/ON
Mode is restarted.
ii. Remote Control Number Switch.
- There are 4 types of remote control transmission code could be selected and stored in EEPROM of
indoor unit. The indoor unit will only operate when received signal with same transmission code from
remote control. This could prevent signal interference when there are 2 or more indoor units installed
nearby together.
- To change remote control transmission code, short or open jumpers at the remote control printed circuit
board.
Remote Control Printed Circuit Board
Jumper A (J-A) Jumper B (J-B) Remote Control No.
Short Open A (Default)
Open Open B
Short Short C
Open Short D
- During Various Setting Mode, press any button at remote control to transmit and store the desired
transmission code to the EEPROM.
- After signal is received, the Various Setting Mode is cancelled and return to normal operation.
- If there is no code is transmitted of Auto OFF/ON button is not pressed within 20 seconds, the
Various Setting Mode will be cancelled.
J_A
J_B
J - A
J - B