Haier HSU-18HEA03/R2(DB)-I Service Manual page 5

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
the connections securely and route the cable properly so that there is no force pulling the
cable at the connection terminals.
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
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.
system.
If air enters the refrigerating 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
When replacing the coin battery in the remote controller, be sure to disposed of the old
battery to prevent children from swallowing it.
If a child swallows the coin battery, see a doctor immediately.
Caution
Installation of a leakage breaker is necessary in some cases depending on the conditions of
the installation site, to prevent electrical shocks.
Do not install the equipment in a place where there is a possibility of combustible gas leaks.
Be sure to install the packing and seal on the installation frame properly. If the packing and
HSU-18HEA03/R2(DB)-I
3
Introduction
For integral
units only
Domestic Air Conditioner