154-EN153-EN
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Switch setting (setting example when controlling 2 or more refrigerant lines centrally)
Outdoor units (setting manually)
*The items in bold font must be set manually.
Outdoor unit’s
interface
P.C. board
Header unit
Follower
unit
Header unit
Follower
unit
Header unit Factory default
SW13, 14
(Line (system) address)
1
(No setting
required)
2
(No setting
required)
31
DIP switch 2 of SW30
(Terminator of indoor/
outdoor communication
line and central control
line)
ON
(No setting
required)
Set to OFF
after setting
addresses.
(No setting
required)
Set to OFF
after setting
addresses.
ON
Relay connector
Connect
after setting
addresses.
Open
Connect
after setting
addresses.
Open
Connect
after setting
addresses.
Open
A
U1 U2
U3 U4 U3 U4
2U1U6U5U2U1U6U5U U1U2 U5U6 U1U2 U5U6 U5U6
2U1U2U1U2U1U2U1U2U1U
BAB AB
U3 U4 U3 U4 U3 U4
AB AB
Header unit Header unit Header unitFollower unit Follower unit
Central
control
controller
Relay
connector
Relay
connector
Relay
connector
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Individual Group
Indoor units
(automatic setting)
Line (system) address 1 1223
Indoor unit address 1 2121
Group address 0 0120
CAUTION
Relay connector connection
Never connect relay connectors between the [U1, U2] and [U3, U4] terminals before completing address setting of
all the refrigerant lines. Otherwise, the addresses cannot be set correctly.
Manual address setting using the remote controller
Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed
and outdoor wiring has not been started (manual setting using the remote controller)
q Wiring example of 2 refrigerant lines
Outdoor
unit
Outdoor
unit
Indoor unit 1 Indoor unit 1Indoor unit 2 Indoor unit 2Indoor unit 3
Remote
controller
Refrigerant line 1 Refrigerant line 2
Line (system) address 1 1 1 2 2
Indoor unit address 1 2 3 1 2
Group address
1
Header unit
2
Follower unit
2
Follower unit
2
Follower unit
2
Follower unit
In the example above, disconnect the remote controller connections between the indoor units and
connect a wired remote controller to the target unit directly before address setting.
ON / OFF
TEMP.
TIME
SET CL
FILTER
RESET
TEST
TIMER SET
CODE No.
UNIT No.
SETTING
DATA
SET
R.C. No.
11
4, 7, 10
2, 5, 8
3, 6, 9
1
SET DATA CODE No.
Pair the indoor unit to set and the remote controller one-to-one.
Turn on the power.
1
Push and hold the , , and buttons at the same time for more than 4 seconds.
LCD starts flashing.
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