24
Installation and Maintenance
Service Manual
NO.
Items to be checked
Possible malfunction
1
Has the unit been installed firmly?
The unit may drop, shake or emit noise.
2
Have you done the refrigerant leakage
test?
It may cause insufficient cooling (heating) capacity.
3
Is heat insulation of pipeline sufficient?
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
specification?
It may cause malfunction or damage the parts.
9
Is there any obstruction in air inlet and air
outlet?
It may cause insufficient 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 insufficient cooling (heating) capacity.
1. Check after Installation
Check according to the following requirement after finishing installation.
8.8 Check after Installation and Test
Operation
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 can’t start cooling.
