Check after installation
Test operation
● Check according to the following requirement after nishing installation.
Items to be checked Possible malfunction
Has the unit been installed rmly? The unit may drop, shake or emit noise.
Have you done the refrigerant leakage 
test?
It may cause insufcient cooling 
(heating) capacity.
Is heat insulation of pipeline sufcient?
It may cause condensation and water 
dripping.
Is water drained well?
It may cause condensation and water 
dripping.
Is the voltage of power supply accord-
ing to the voltage marked on the
nameplate?
It may cause malfunction or damaging 
the parts.
Is electric wiring and pipeline installed
correctly?
It may cause malfunction or damaging 
the parts.
Is the unit grounded securely? It may cause electric leakage.
Does the power cord follow the speci-
cation?
It may cause malfunction or damaging 
the parts.
Is there any obstruction in the air inlet 
and outlet?
It may cause insufcient cooling 
(heating) capacity.
The dust and sundries caused during 
installation are removed?
It may cause malfunction or damaging 
the parts.
The gas valve and liquid valve of 
connection pipe are open completely?
It may cause insufcient cooling 
(heating) capacity.
1. Preparation of test operation
    ● The client approves the air conditioner.
    ● 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 can’t   
       start cooling.