2) Turn on
DIP
switch 2 of SW30 on the interface P.C. board of the outdoor unit if the switch is OFF.
(Leave it as it is if it has already been set to ON.)
2
Turn on the indoor and outdoor units of the refrigerant line
to be initialized in addresses.
About one minute after turning on the power, confirm that the 7-segment display on the outdoor
unit indicates “U.1. - - -” and operate the interface P.C. board on the outdoor unit of the
refrigerant line as follows.
3
Confirm that the 7-segment display indicates “A.d. c.L.” and set SW01, SW02 and SW03 to 1, 1, 1
respectively.
4
After a time “U.1.L08” appears on the 7-segment display if the address clearing has been
completed successfully.
If the 7-segment display indicates “A.d. n.G.”, the outdoor unit may still connected with other
refrigerant lines. Check the connection of the relay connectors between [U1, U2] and [U3, U4].
NOTE
Take care to carry out the procedure above correctly; otherwise, addresses in other refrigerate lines may also be
cleared.
5
Set the addresses again after finishing the clearance.
s
e
s
s
e
r
d
d
a
e
l
b
a
r
a
e
l
C
4
0
W
S
3
0
W
S
2
0
W
S
1
0
W
S
2
1
2
Confirm that the 7-segment display indicates
“A.d.buS” and turn SW04 ON for more than five
seconds.
System/indoor unit/group address
2
2
2
Confirm that the 7-segment display indicates
“A.d.nEt” and turn SW04 ON for more than five
seconds.
Central control address
U3 U4
U1 U2
U1 U2
A
B
U1 U2
A
B
U3 U4
U1 U2
U1 U2
A
B
U1 U2
A
B
U3 U4
U1 U2
U1
U3
U2
U4
U1 U2
A
B
Central remote
controller
Outddor
unit
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Indoor units to have their addresses initialized
Outdoor
unit
Outdoor
unit
- 93 -
