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 
  Appliance shall be stored in a room without 
continuously operating open flames (for 
example an operating gas appliance) and 
ignition sources (for example an operating 
electric heater). 
  Installation 
  Do not install the unit at place where 
leakage of flammable gas may occur. In case 
gas leaks and accumulates at surrounding of 
the unit, it may cause fire. 
  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 fore 
or 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, all naked 
flames shall be removed or extinguished. 
  If strange sounds or smoke comes 
from product, turn the breaker off or 
disconnect the power supply cable. 
There is risk of electric shock or fire. 
  Stop operation and close the window in 
storm or hurricane. If possible, remove the 
product from the window before the hurricane 
arrives. 
There is risk of property damage, failure of 
product, or electric shock. 
  Do not open the inlet grill of the 
product during operation. (Do not touch the 
electrostatic filter, if the unit is so equipped.) 
There is risk of physical injury, electric shock, or 
product failure. 
  When the product is soaked, contact an 
authorized service center. 
There is risk of fire or electric shock. 
  Be caution that water could not enter 
the product. 
There is risk of fire, electric shock, or product 
damage. 
  Ventilate the product from time to time 
when operating it together with a stove etc. 
There is risk of fire or electric shock. 
  Turn the main power off when cleaning 
or maintaining the product.   
There is risk of electric shock. 
  When the product is not be used for a 
long time, disconnect the power supply plug