1. Precaution 
1.1 Safety Precaution 
  To prevent injury to the user or other 
people  and  property  damage,  the  following 
instructions must be followed. 
  Incorrect  operation  due  to  ignoring 
instruction will cause harm or damage.   
  Before  service  the  unit,  be  sure  to 
read this service manual at first. 
 
1.2 Warning 
 Installation 
  Do not use a defective or underrated 
circuit  breaker.  Use  this  appliance  on  a 
dedicated circuit. 
There is risk of fire or electric shock. 
  For electrical work, contact the dealer, 
seller,  a  qualified  electrician,  or  an 
authorized service center. 
Do  not  disassemble  or  repair  the  product, 
there is risk of fire or electric shock. 
  Always ground the product. 
There is risk of fire or electric shock. 
  Install  the  panel  and  the  cover  of 
control box securely. 
There is risk of fire of electric shock. 
  Always install a dedicated circuit and 
breaker. 
Improper  wiring  or  installation  may  cause 
electric shock. 
  Use  the  correctly  rated  breaker  of 
fuse. 
There is risk of fire or electric shock. 
  Do  not  modify  or  extend  the  power 
cable. 
There is risk of fire or electric shock. 
  Do not install, remove, or reinstall the 
unit by yourself (customer). 
There is risk of fire, electric shock, explosion, 
or injury. 
  Be  caution  when  unpacking  and 
installing the product. 
Sharp edges could cause injury, be especially 
careful of the case edges and the fins on the 
condenser and evaporator. 
  For  installation,  always  contact  the 
dealer or an authorized service center. 
  Do  not  install  the  product  on  a 
defective installation stand. 
  Be sure the installation area does not 
deteriorate with age. 
If the base collapses, the air conditioner could 
fall with it, causing property damage, product 
failure, and personal injury. 
  Do not let the air conditioner run for a 
long  time  when  the  humidity  is  very  high 
and a door or a window is left open. 
  Take care to ensure that power cable 
could not be pulled out or damaged during 
operation. 
There is risk of fire or electric shock. 
  Do  not  place  anything  on  the  power 
cable. 
There is risk of fire or electric shock. 
  Do  not  plug  or  unplug  the  power 
supply plug during operation. 
There is risk of fire or electric shock. 
  Do not touch (operation) the product 
with wet hands. 
  Do  not  place  a  heater  or  other 
appliance near the power cable. 
There is risk of fire and electric shock. 
  Do  not  allow  water  to  run  into 
electrical parts. 
It  may  cause  fire,  failure  of  the  product,  or 
electric shock. 
  Do not store or use flammable gas or 
combustible near the product. 
There is risk of fire or failure of product. 
  Do  not  use  the  product  in  a  tightly 
closed space for a long time. 
Oxygen deficiency could occur. 
  When  flammable  gas  leaks,  turn  off 
the  gas  and  open  a  window  for  ventilation 
before turn the product on.