Heating Mode Operation - LG Universal System Air Conditioner Service Manual

Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
35°C
Heat-Exchanger
temperature
32°C
29°C
21°C
17°C
Intake Air Temperature
Setting Temperature
+4°C(Unit Sensing)
+2°C(Remo Sensing)
(Thermo OFF)
Setting Temperature
+2°C(Unit Sensing)
0°C(Remo Sensing)
(Thermo ON)
COMP
Outdoor fan
Indoor fan
4way valve
Hot-start Control
The indoor fan does no rotate until the evaporator piping temperature will be reached to 21°C.
The operation diagram is as following.
temperature
1min
ON
ON
Setting
Lo
fan
Off Low
Low
spped
Pipe
32 °C
29 °C
23 °C
21 °C
17 °C
LO
LOW
Indoor fan
OFF LOW
speed
COMP
3min
Minimum
3min
OFF
OFF
Setting
fan
Low Low Off
spped
ON
SELECTED
LOLOW
LOW
FAN
ON
Ceiling Cassette Type
A
B Low fan during 10sec
1min
ON
ON
Setting
fan
Off Low
spped
Service Manual 119