En-8
(6) Set the switches on the PCB.
1
Indoor unit address
Rotary switch (IU AD × 1)...Factory setting “0”
Rotary switch (IU AD × 10)...Factory setting “0”
When connecting multiple indoor units to 1 refrigerant system, set the address at
IU AD SW as shown in the Table A.
2
Refrigerant circuit address
Rotary switch (REF AD × 1)...Factory setting “0”
Rotary switch (REF AD × 10)...Factory setting “0”
In the case of multiple refrigerant systems, set REF AD SW as shown in the Table
A for each refrigerant system.
Set to the same refrigerant circuit address as the outdoor unit.
Rotary switch
(Example: “0”)
Rotary switch
(Example: “0”)
Controller PCB
IU AD ×10
IU AD ×1
REF AD ×10
REF AD ×1
RC AD ×1
Table A
Setting
Setting
range
Type of switch
Indoor unit
address
0 to 63
Setting example 2
IU AD × 10
IU AD × 1
Refrigerant circuit
address
0 to 99
Setting example 63
REF AD × 10
REF AD × 1
• If working in an environment where the wireless remote controller can be used, the
addresses can also be set using the remote controller.
• If setting the addresses using the wireless remote controller, set the indoor unit
address and refrigerant circuit address to “00”.
Address
Rotary
Address
Rotary
Switch Setting
Switch Setting
Refrigerant
circuit
REF AD SW
Indoor unit
IU AD SW
× 10
× 1
× 10
× 1
0
0
0
0
0
0
1
0
1
1
0
1
2
0
2
2
0
2
3
0
3
3
0
3
4
0
4
4
0
4
5
0
5
5
0
5
6
0
6
6
0
6
7
0
7
7
0
7
8
0
8
8
0
8
9
0
9
9
0
9
10
1
0
10
0
0
11
1
1
11
1
1
12
1
2
12
1
2
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
99
9
9
63
6
3
Do not set the indoor unit address (IU AD SW) at 64 to 99.
It may result in failure.
6. FIELD SETTING
There are 3 methods for address setting by FIELD SETTING as follows.
Set by either of the methods.
Each setting method is described (1) to (3) below.
(1) IU AD, REF AD SW settings ...... This section (6.1. Setting the address)
(2) Remote controller settings .. Refer to the wired or wireless remote controller manual for
detailed setting information. (Set IU AD, REF AD SW to 0)
(3) Automatic address settings ....... Refer to the outdoor unit manual for detailed setting in-
formation. (Set IU AD, REF AD SW to 0)
6.1. Setting the address
Manual address setting method
CAUTION
When setting the DIP switch, use an insulated screw driver.
When handling the PCB, static electricity charged in the body may cause malfunction
of the PCB. Follow the cautions below:
• Touch metal part of the indoor and outdoor units for more than 10 seconds to
discharge static electricity charged in the body.
• Do not touch terminals of parts and patterns implemented on the PCB.
(1) Remove the cable clamp and the piping cover.
Piping cover
Screw
Screw
Cable clamp
(2) Remove screws of the heat exchanger, and then remove earthing (grounding) wire.
(3) Remove the shield and the connector cover.
(4) Remove 3 thermistors and 4 connectors.
Screw
Thermistors
Connectors
Earthing
(Grounding)
wire
Connector
Shield
Connector cover
Screw
(5) Remove screws, then remove the control unit.
Control unit
Screws
9373370192_IM.indb Sec1:8
9373370192_IM.indb Sec1:8
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2/16/2013 11:13:09 AM
