LG ARUB230BT2 Installation Manual page 73

Night silent operation 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.
Max. RPM setting method
Main PCB Power Reset
Note 1)
Setting the Fan Max. RPM
Example of Max. RPM Setting
Fan Max. RPM : Step 1
- Night silent operation start
© 8 hours after max. ODU temp. sensing, the fan max. RPM is operated setting RPM.
- Night silent operation end
© 9 hours after Night silent operation is started, the function should be stopped automatically.
CAUTION
1. Request installer to set the function during installation.
2. In case the function is not used, set the dip S/W OFF and reset the power.
3. If ODU RPM changes, cooling capacity may go down.
[Note]
1. Select appropriate RPM referencing noise table.
Step
Black button
1 1 time
2 2 times
3 3 times
4 4 times
5 5 times
6 6 times
7 7 times
8 8 times
9 9 times
Dip S/W No.12+14 ON
Setting Complete
Setting
Judgment
Fan Max
RPM
(hr)
Red button
1 time 510 8
1 time 510 6.5
1 time 510 5
1 time 450 8
1 time 450 6.5
1 time 450 5
1 time 400 8
1 time 400 6.5
1 time 400 5
Master ODU
SW01B
Master ODU
SW01S
SW01V
SW02V
Operation
(hr)
9
10.5
12
9
10.5
12
9
10.5
12
Test Run
Installation Manual 73