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Model No:AC -S13CK_S13HK
Version 1.0
CHAPTER 9: TROUBLESHOOTING
1. REFRIGERATION CYCLE SYSTEM
l In order to diagnose malfunctions, make sure that there is no electrical problems
before inspecting the refrigeration cycle. Such problems include insufficient
thermal insulation, problem with the power supply, malfunction of a compressor
and indoor or outdoor fan motor.
l The normal indoor outlet air temperature and pressure of the refrigeration cycle
depends upon various conditions. The standard values for them are shown in the
following table.
Normal Pressure and Outlet Air Temperature
Gas Pressure
MPa(kg/cm
2
.g)
Outlet Air Temperature
Cooling Mode 0.4~0.6(4~6) 12~16
*Condition: Indoor fan speed: High ; Outdoor DB temperature:35
l Checking procedure
Less than 8
o
C at the cooling operation
Difference in the intake
And outlet air temperature
Value of electric current
during operation
Normal
l Measure the air temp.
difference (
o
C)
Dusty condenser
Preventing heat
radiation
Excessive amount of
refrigerant
Inefficient
compressor
Insufficient refrigerant
Clogged strainer or
capillary tube
Gas side
pressure
l Measure
electric
current
during
operation
l
Measure gas side
pressure from the
service port of
the
3-way valve
42


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