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15 - OUTDOOR/INDOOR UNIT REFRIGERANT CIRCUIT ADDRESS

Indoor units that are part of a multisplit system must be properly configured to be able to communicate with the

outdoor unit over different channels (Indoor A, Indoor B, etc...) of the communication bus.

Each indoor unit address must correspond to the physical connection of the indoor unit to the outdoor unit refrigerant

circuit, i.e.:

Refrigerant Circuit A <--> Indoor Unit Address A

Refrigerant Circuit B <--> Indoor Unit Address B

...

There are three methods to set the address of an indoor unit:

(1) Dip-switch setting: the address is set by mean of a dip-switch located on the indoor unit pcb.

(2) Remote controller procedure: the address is set with the remote control via parameter P08.

(3) Automatic addressing procedure: the address is automatically set on every indoor unit of the system starting the

automatic addressing procedure via parameter P30.

(1) ADDRESS SETTING THROUGH DIP-SWITCHES (UP TO 4 INDOOR UNITS)

Disconnect the power

Check that the setting of switch SW2 (PCB) corresponds to the figure:

SW2

1=off

2=off

SW2

1=off

2=on

INDOOR UNIT A

(PCB factory state)

INDOOR UNIT C

PCB

INDOOR UNIT B

SW2

1=on

2=off

INDOOR UNIT D

SW2

1=on

2=on

PCB