34
Installation and Maintenance
Service Manual
point of outdoor unit
Leakage detection
point of indoor unit
Fig.29
8.8 Check after Installation and Test
Operation
8.9 Installation of Anti-tilting Chain
Check according to the following requirement after finishing
installation.
1. Preparation of test operation
● Do not switch on power before installation is nished completely.
● Electric wiring must be connected correctly and securely.
● Gas vale and liquid valve should be opened.
2. Test operation method
● Switch on power, press ON/OFF button on the remote controller
to start operation.
● Press MODE button to select COOL, HEAT and FAN to check
whether the operation is normal or not.
In order to prevent tilting due to an accident, please install the
anti-tilting chain.(As show in Fig.30)
Installation steps:
1. Remove the screw in the anti-tilting hole at the top cover of
indoor unit.
2. Take out the anti-tilting chain from the accessories; put it into
the anti-tilting hole and then x it with screw.
3. Fix the other end of anti-tilting chain on the wall with
screw(ST4.2X38).
Check after installation
Test operation
No. Items to be checked Possible malfunction
1
Has the unit been
installed rmly?
The unit may drop, shake or emit
noise.
2
Have you done the
refrigerant leakage test?
It may cause insufcient cooling
(heating) capacity.
3
Is heat insulation of
pipeline sufcient?
It may cause condensation and
water dripping.
4 Is water drained well?
It may cause condensation and
water dripping.
5
Is the voltage of power
supply according to the
voltage marked on the
nameplate?
It may cause malfunction or
damage the parts.
6
Is electric wiring and
pipeline installed
correctly?
It may cause malfunction or
damage the parts.
7
Is the unit grounded
securely?
It may cause electric leakage.
8
Does the power cord
follow the specication?
It may cause malfunction or
damage the parts.
9
Is there any obstruction
in air inlet and air outlet?
It may cause insufcient cooling
(heating).
10
The dust and
sundries caused
during installation are
removed?
It may cause malfunction or
damaging the parts.
11
The gas valve and liquid
valve of connection pipe
are open completely?
It may cause insufcient cooling
(heating) capacity.
12
Is the inlet and outlet
of piping hole been
covered?
It may cause insufcient cooling
(heating) capacity or waster
eletricity.
screw
anti-tilting hole
anti-tilting
chain
Fig.30