GREE                                                          DC Inverter Multi VRF System II Service Manual 
84 
LED 
Function 
Function code  Display 
Current status  Blink  Quiet mode setting 
Current status  Blink  Heat pump function setting 
Current status  Blink  Defrosting period K 1 setting 
Current status  Blink  Setting of upper limit of IDU/ODU capacity distribution ratio
n3 ON  Compulsory defrosting 
Current status  Blink  Limit setting for max. capacity/output capacity 
n5  ON  IDU number offset setting 
Current status  Blink  Adjusting target of high pressure 
Current status  Blink  Adjusting target of low pressure 
nU  ON  Clearing IDU remote shield 
Current status  Blink  Temperature in Fahrenheit 
Current status  Blink  Corrective value b for low discharge temperature 
Current status  Blink  Refrigerant recovery 
A8 ON  Vacuum pump mode 
Current status  Blink  Defrosting mode setting 
Low pressure  ON  Compulsory cooling 
Current status  Blink  Static Pressure Function 
Press SW1 button (▲) and SW2 button (▼) to select the corresponding functions to adjust the 
numberˈpress SW4 to quit Function setting modeʽ 
2.3.6 ODU Quiet Function 
This function is suitable for projects that have strict requirements for noise. It includes two modes: 
smart night silent mode, compulsory silent mode. 
When unit enters function setting, main board of outdoor unit will display as below: 
LED 
Function code  Display 
00~12 Blink 
Codes 00~12 refer to the corresponding functions. Press SW1 button (Ʒ) and SW2 button () to 
select the following silent modes.When applicable mode is selected, press SW3 to confirm. Main board 
of outdoor unit will display as below: