LGRED Heat General Service Manual

Part 2 Functions & Controls

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Only for training and service purposes

LGE Internal Use Only

5.1 Hot start

• When heating is started, the indoor fan is stopped or very slow to prevent the cold air carry out

• When the temp. of heat exchanger reach 30°C(model by model), indoor fan is started.

5.2 Self-diagnosis Function

• The air conditioner installed can self-diagnosed its error status and then transmits the result to the central control.

Therefore, a rapid countermeasure against failure of the air conditioner allows easy management and increases the

usage life of air conditioner.

• Refer to trouble shooting guide.

5.3 Soft dry operation

• When the dehumidification operation input by the remote control is received, the intake air temperature is detected and

the setting temp is automatically set according to the intake air temperature.

• While compressor off, the indoor fan repeats low airflow speed and stop.

• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification opera-

tion and 4-min compressor off repeat.

Compressor ON Temp. ‘ Setting Temp+0.5°C

Compressor OFF Temp. ‘ Setting Temp-0.5°C

• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

5. Reliability

Intake air Temp. Setting Temp.

26°C ≤ intake air temp. 25°C

24°C ≤ intake air temp.< 26°C intake air temp. -1°C

22°C ≤ intake air temp. < 24°C intake air temp. -0.5°C

18°C ≤ intake air temp. < 22°C intake air temp.

intake air temp. < 18°C 18°C