Introduction 
4  Domestic air conditioner 
1.2.3  Cautions Regarding Products after Repair 
Warning 
Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to
●
 
conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools can
cause an electrical shock, excessive heat generation or fire.
When relocating the equipment, make sure that the new installation site has sufficient strength to 
withstand the weight of the equipment. 
If the installation site does not have sufficient strength and if the installation work is not conducted 
securely, the equipment can fall and cause injury.
Be sure to install the product correctly by using the provided standard installation frame. 
Incorrect use of the installation frame and improper installation can cause the equipment to fall, resulting
in injury.
For 
integral 
units only
●
Be sure to install the product securely in the installation frame mounted on a window frame.
●
 
If the unit is not securely mounted, it can fall and cause injury.
For 
integral 
units only
Warning 
Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to
the electrical equipment, the internal wiring regulations and the instruction manual for installation when 
conducting electrical work. 
Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. 
Be sure to use the specified cable to connect between the indoor and outdoor units. Make the 
connections securely and route the cable properly so that there is no force pulling the cable at the 
connection terminals. 
Improper connections can cause excessive heat generation or fire. 
When  connecting  the  cable  between  the  indoor and  outdoor  units, 
●
make sure  that the terminal  cover 
does not lift off or dismount because of the cable. 
If the cover is not mounted properly, the terminal connection section can cause an electrical shock,
●
 
excessive heat generation or fire. 
Do not damage or modify the power cable. 
Damaged or modified power cable can cause an electrical shock or fire. Placing heavy items on the 
power cable, and heating or pulling the power cable can damage the cable. 
Do not mix air or gas other than the specified refrigerant (R-410A / R22) in the refrigerant system. 
If air enters the cooling system, an excessively high pressure results, causing equipment damage 
and injury. 
If the refrigerant gas leaks, be sure to locate the leak and repair it before charging the refrigerant. After 
charging refrigerant, make sure that there is no refrigerant leak. 
If the leak cannot be located and the repair work must be stopped, be sure to perform pump-down and 
close the service valve, to prevent the refrigerant  gas from leaking into the room. The refrigerant  gas 
itself is harmless, but it can generate toxic gases when it contacts flames, such as fan and other heaters,
.