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17. Troubleshooting Guide
17.1 Refrigeration Cycle System
In order to diagnose malfunctions, make sure that there are no
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 on the right.
Normal Pressure and Outlet Air Temperature (Standard)
Cooling Mode
Heating Mode 2.0 ~ 2.7 (20 ~ 27)
*Condition: • Indoor fan speed = High
• Outdoor temperature 35°C at the cooling
• Compressor operates at rated frequency
91
Gas pressure
MPa
temperature
2
(kg/cm
G)
0.9 ~ 1.2 (9 ~ 12)
mode and 7°C at the heating mode
Outlet air
(°C)
13 ~ 17
32 ~ 42
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