Reliability; Hot Start; Self-Diagnosis Function; Soft Dry Operation - LG Single A Svc Manual

5. Reliability

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.
Intake air Temp.
26°C ≤ intake air temp.
24°C ≤ intake air temp.< 26°C
22°C ≤ intake air temp. < 24°C
18°C ≤ intake air temp. < 22°C
intake air temp. < 18°C
• 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
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by Micom Control.
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Setting Temp.
intake air temp. -1°C
intake air temp. -0.5°C
intake air temp.
- 19 -
Part 2 Functions & Controls
25°C
18°C
LGE Internal Use Only