Heating Mode Operation; Hot-Start Control - LG A2UN186FA0 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.
Intake Air temp.
Setting temp.+3°C
(Compressor OFF)
Setting temp.
(Compressor ON)
INDOOR FAN
• A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed, when
it becomes lower than 40˚C fan stops.
• B point; When the indoor Heat-Exchanger temperature is higher than 31°C, fan operates at selected fan
speed, when it becomes lower than 31°C, the fan operates at low speed for 10sec, after 10sec, it
operates at selected fan speed.

Hot-Start Control

The indoor fan stops until the evaporator piping temperature will be reached to 25°C.
The operation diagram is as following.
minimum 3min
1min
Selecting
Hot Start Low
Fan Speed
PIPING
TEMPERATURE
25°C
22°C
INDOOR FAN
COMPRESSOR
A
minimum minimum
10sec.
1min.
Low OFF Low
1min
OFF LOW
ON
- 24 -
B
minimum
10sec.
Selecting fan
Low
speed
Selected Fan
A
OFF