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• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidifica-
tion operation and 4-min compressor off repeat.
Compressor ON Temp.
Compressor OFF Temp.
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
I Heating Mode Operation
• When the intake air temp reaches +3°...above the setting temp, the compressor is turned off. When below
the setting temp, the compressor is turned on.
Compressor ON Temp.
Compressor OFF Temp.
• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 26°C, when above 28°C , it
operates with the low or setting airflow speed (while in sleep mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C , it
operates with the low airflow speed.
• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the
outdoor fan is turned on/off according to the indoor pipe temp.
• While in defrost control, both of the indoor and outdoor fans are turned off.
I Defrost Control
• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,
reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.
• Defrost control is available 60 min. later since heating mode operation started, and it will not prolong over 12
min.
• Defrost control is carried out according to the following priority order while in heating mode operation.
1st priority: Defrost control is carried out according to the indoor pipe temp 60 min. later since heating mode
operation started.
2nd priority : The temp differences between the indoor pipe temp and the intake air temp 25 min. later (∆T1)
and 60 min. later (∆T2) since heating mode operation started are measured, then defrost control
is carried out according to the difference (∆T=∆T1-∆T2).
3rd priority : Defrost control is carried out according to the temp difference (∆TE=TE1-TE2) between the
indoor pipe temperatures of 25 min later (TE1) and 60 min later (TE2) after heating mode opera-
tion started.
• When the indoor pipe temp is 41°C or above, defrost control is not carried out even if the condition is one of
the defrost conditions above.
• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
➲ Setting Temp+0.5°C
➲ Setting Temp-0.5°C
➲ Setting Temp.
➲ Setting Temp.+3°C
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LGE Internal Use Only
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