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57 

 

 

Deice starts to prevent frosting at outdoor heat exchanger. 
 

š Normal 

Deice 

Deice operation detection commences in Heating operation starts or 60 minutes after previous deice operation. If 
the outdoor piping temperature drops to -4°C for 50 sec. continuously during compressor is in operation, deice 
will start. 
(There is no detection during Outdoor Fan stops.) 
 

š Overload 

Deice 

š  During heating operation, if the outdoor Fan OFF duration (due to overload protection control) is accumulated up 

to 60 minutes and after compressor starts for 1 minute, deice starts. 
 

š Deice 

ends 

when 

(a) 12 minutes after deicing operation starts; 
(b) The outdoor piping temperature rises to about 12°C. 
 

š  After deice operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

58 

 

 

 

 

 

 

 

 

59 

 

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 

 

 

“Beep” 

 

2 x “Beep” 

 

 
 

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 (J1) 

Jumper B (D2) 

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. 

 
 
 
 
 
 
 

60 

š  To check current remote control transmission code and store the transmission code to EEPROM: 

o

  Press “Set” button continuously for 10 seconds by using pointer. 

o

  Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code change. 

š  To change the air quality sensor: 

o

  Press and release by using pointer 

o

  Press the Timer Decrement button to select sensitivity: 

1. Low sensitivity 
2. Standard (Default) 
3. Hi sensitivity 

o

  Confirm setting by pressing Timer Set button, a “beep” sound will be heard. LCD returns to original display 

after 2 seconds. 

o

  LCD returns to original display if remote control does not operate for 30 seconds. 

 

š  To clear and restore the remote control setting to factory default. 

o

  Press once to clear the memory 

 

š  To change indoor unit indicators’ intensity: 

o

  Press continuously for 5 seconds. 

 

š  To change remote control display from Degree Celsius (°C) to Degree Fahrenheit (°F) 

o

  Press continuously for 10 seconds.