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14 Servicing Mode
14.1. Auto OFF/ON Button
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 heard at the fifth seconds, in order to identify the starting of Test Run operation (Forced cooling operation). Within 5
minutes after Forced cooling operation start, the Auto OFF/ON button is pressed for more than 5 seconds. A 2 “beep” sounds
will heard at the fifth seconds, in order to identify the starting of Forced heating operation.
The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air conditioner
operation.
3. REMOTE CONTROL NUMBER SWITCH MODE
The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed continuously for more than
11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby
condition) and press “AC RESET” button and then press any button at remote control to transmit and store the desired
transmission code to the EEPROM.
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.
• During Remote Control Number Switch Mode, press any button at remote control to transmit and store the transmission
code to the EEPROM.
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