Panasonic CU-2E15GBE User Manual

 

54 

In order to diagnose malfunctions, ensure the air conditioner is free 
from electrical problems before inspecting 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 conditions, the standard values for them are 
shown in the table to the right. 
 
 
 

 

Normal Pressure and Outlet Air Temperature (Standard)

 

Gas Pressure 

Mpa 

(kg/cm

2

G) 

Outlet air 

Temperature 

(°C) 

Cooling Mode

0.9 ~ 1.2 (9 ~ 12) 

15 ~ 17 

Heating Mode 2.3 ~ 2.8 (23 ~ 28) 

35 ~ 41 

Condition:  - Indoor fan speed = High 
                  - Outdoor temperature = 35°C at cooling mode 
                     and 7°C at heating mode. 
                  - Compressor operates at rated frequency 

Different in the intake 

and outlet 

air temperatures 

Normal 

Value of electric current 

during operation 

Dusty condenser 

preventing heat radiation

Excessive amount 

of refrigerant 

Gas Side 

pressure 

Inefficient compressor 

Insufficient refrigerant 

Clogged strainer or 

capillary cube 

•  Measuring the air 

temperature different 

•  Measuring electric current 

during operation 

•  Measuring gas side 

pressure 

More than 8°C 

(15 minutes after an 

operation is started) for 

cooling mode. 

Above 14°C  

(15 minutes after an 

operation is started) for 

heating mode. 

Less than 8°C at the cooling mode 

Less than 14°C at the heating mode

Higher than specified 

Heating 

Mode 

High 

Low 

Low 

Lower than specified 

Inefficient compressor 

Insufficient refrigerant 

Clogged strainer or 

capillary cube 

Cooling 

Mode 

Low 

Low 

Low