LG ATNH126ELFB Service Manual page 27

Installation
Auto addressing
Auto addressing work should be done for simultaneous operation.
Addressing work assigns address to each Indoor Unit.
When firstly installing product or replacing the Indoor Unit PCB.
AUUW4860/AUUW6060
Main PCB
(Outdoor PCB Board)
1. Indoor unit connection numbers separation s/w
Accordingly insert the Number pin numbers as below in
accordance with the indoor unit connection numbers.( A )
(Inserting order is irrespective.)
Connection
numbers
AUUH488B/AUUH7280/AUUH10080
Main PCB
JIG_SW
A
Fig.a Outdoor PCB diagram
1. JIG_SW Setting
Check the JIG_SW to the right, or not set the JIG_SW to
the right.( A )
2. ZONE SW1 Setting
Set the ZONE SW1 as below Table.a ( B )
❈ S/W1 is not used.
❈ 1 means S/W up.
0 means S/W down.
60 Synchro Air Conditioner
LED01T
TEST_SW1
ZONE SW1
C
1 2 3 4
B
2. Operation method of pipe length s/w
Convert the s/w toward "long pipe" direction when
installing more than main pipe of 30m ( B ).
3. Auto Addressing Method
1) Turn main power on.
2) Press the S/W_ADDRESSING for about
5~7 seconds( C )
3) Turn the Indoor unit on after 1~2minutes after
pressing
the s/w.(If performing the ADDRESSING work at the
PCB, the green LED rapidly flickers.)
Table.a ZONE SW1 Setting
Indoor Unit No.
ZONE SW1
1(Single)
1 2 3 4
x 0 0 0
2(Duo)
1 2 3 4
x 1 0 0
3(Trio)
3 4
1 2
x
1 1 0
4(Quartet)
1 2 3 4
x
1 1 1
3. Auto Addressing Method
* Work procedure
1) Set JIG_SW and ZONE SW1 correctly.
2) Turn on main power.
3) Press the TEST_SW1 for about 3 seconds within 3minutes After
main power on.( C )
4) After step 3), the LED01T(green LED) rapidly flickers.
When Addressing work is done, green LED is off, else LED stops
flickering and lights continuously.
5) If you fail to perform the Addressing work,
repeat step 2),3).