CS-C120TE, CS-C180TE, CS-C240TE, CU-C120TE, CU-C180TE, CU-C240TE - Panasonic Air Conditioner Service Manual (repair manual). Page 20

– 18 –

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 or 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 on the right.

Normal Pressure and Outlet Air Temperature (Standard)

Cooling mode

Outlet air

temperature

(

°

C)

12 ~ 16

●

●

●

Higher than specified

Difference in the intake

and outlet

air temperatures

Normal

Above 8

°

C

(15 minutes after an

operation is started.)

Less than 8

°

C at 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

★

 Condition: Indoor fan speed; High

Outdoor temperature 35

°

C

Untitled-5

6/25/00, 2:23 PM

18