The  gas-side  and  liquid-side  stop  values 
are both opened. 
  The air conditioner is pre-heated by turning 
on the power. 
3  Test operation 
Set  the  air  conditioner  under  the  mode  of 
"COOLING"  by  remote  controller,  and  check 
the following points. 
Indoor unit 
  Whether the switch on the remote controller 
works well. 
  Whether  the  buttons  on  the  remote 
controller works well. 
  Whether  the  air  flow  louver  moves 
normally. 
  Whether the room temperature is adjusted 
well. 
  Whether the indicator lights normally. 
  Whether the temporary buttons works well. 
  Whether the drainage is normal. 
  Whether  there  is  vibration  or  abnormal 
noise during operation. 
Outdoor unit 
  Whether  there  is  vibration  or  abnormal 
noise during operation. 
  Whether  the  generated  wind,  noise,  or 
condensed  of  by  the  air  conditioner  have 
influenced your neighborhood. 
  Whether any of the refrigerant is leaked.