97
Installation and Maintenance
Service Manual
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) capacity.
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.
1. Check after Installation
Check according to the following requirement after finishing
installation.
2. Test Operation
(1) Preparation of test operation
● The client approves the air conditioner installation.
● Specify the important notes for air conditioner to the client.
(2) Method of test operation
● Put through the power, press ON/OFF button on the remote
controller to start operation.
● Press MODE button to select AUTO, COOL, DRY, FAN and
HEAT to check whether the operation is normal or not.
● If the ambient temperature is lower than 16
℃
, the air
conditioner cant start cooling.
8.8 Check after Installation and Test operation
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