– 37 –
MAC9512086C2
CS-C73KE
Refrigeration cycle system
In order to diagnose malfunctions, make sure that
there are no electrical problems before inspect-
ing the refrigeration cycle. Such problems include
insufficient insulation, problem with the power source,
malfunction of a compressor and a fan.
The normal outlet air temperature and pressure
of the refrigeration cycle depends on various condi-
tions, the standard values for them are shown in the
table to the right.
Normal Pressure and Outlet Air Temperature (Standard)
Cooling mode
Outlet air
temperature
(°C)
12 ~ 16
●
Measuring electric current
during operation
●
Measuring gas side pressure
●
Measuring the air temperature
difference
Higher than specified
Difference in the intake
and outlet
air temperatures
Normal
More than 8°C
(15 minutes after an
operation is started.)
Less than 8°C at the cooling mode
Value of electric
current during operation
Excessive amount
of refrigerant
Lower than specified
Gas side
pressure
Insufficient refrigerant
Inefficient compressor
Gas pressure
MPa
(kg/cm
2
G)
0.4 ~ 0.6 (4 ~ 6)
High
Low
Low
Cooling Mode
Clogged strainer or
capillary tube
Dusty condenser
preventing heat radiation
Troubleshooting Guide
★
Condition: Indoor fan speed; High
Outdoor temperature 35°C
Untitled-8
6/28/00, 5:19 PM
37