Fan Control; Fan Mode - LG ARUV Series Service Manual

1.4 Fan control

The fan motors of the main unit are operated by the inverter drive with fuzzy control rules. Those of the sub
units are all step motors. The operating status of the fan motors is shown below for each step.

2 - Fan Mode

Fan Step
0
1
2
3
4
5
1 - Fan Mode (Half size)
Fan Step
0
1
2
The main unit has two inverter motors and both operate together .
• The sub unit has two tap motors and run in steps of stop , low and high .
• The tap motor functioning is decided as per the frequency of the inverter motors of the main unit.
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Sub unit
Left fan Right fan
Stop Stop
Low Stop
High Stop
Low Low
High Low
High High
Fan
Stop
Low
High
- 199 -
Main unit
Fan frequency
<5 Hz
5 Hz ≤
f < 10Hz
10 Hz ≤ f
< 20Hz
20 Hz ≤ f
< 30Hz
30 Hz ≤ f
< 40Hz
f ≥ 40Hz
Fan frequency
< 5Hz
5 Hz ≤
f < 20Hz
≤
f 20 Hz
LGE Internal Use Only
Function