Night Low Noise Function - LG MULTI V IV ARNU07GTU 2 Series Service Manual

4.13 Night Low Noise Function

In cooling mode, this function makes the ODU fan operate at low RPM to reduce the fan noise of ODU at night
which has low cooling load.
Night low noise function setting method
RPM / Time Settings
Step Judgment Time(Hr)
op1 8
op2 6.5
op3 5
op4 8
op5 6.5
op6 5
op7 8
op8 6.5
op9 5
op10
op11 Continuous operation
op12
CAUTION
• Request installer to set the function during installation.
• In case the function is not used, set the dip S/W OFF and reset the power.
• If ODU RPM changes, cooling capacity may go down.
Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Master unit PCB DIP switch on : No.5
Select the mode using ʻ▶ʼ, ʻ◀ʼ Button : "Func" Push
the ʻ●ʼ button
Select the Function using ʻ▶ʼ, ʻ◀ʼ Button : "Fn3"
Push the ʻ●ʼ button
Select the Option using ʻ▶ʼ, ʻ◀ʼ Button : "op1~op12"
Push the ʻ●ʼ button
Start the Night low noise function :
Save the selected option value in EEPROM
Operation Time(Hr)
9
10.5
12
9
10.5
12
9
10
12
- 45 -
Noise
Heat Pump 8~12HP
Step
op1~op3, op10
op4~op6, op11
op7~op9, op12
Function
Capacity
14~20HP
Noise(dB)
55 59
52 56
49 53
LGE Internal Use Only