Connect Communication Wire Of Wired Controller - Gree GMV-NX140P/A(X1.2)-K Owner's Manual

wiring screw
(4) Fix the communication cable with clamp of electric box.
(5) For more reliable communication, make sure connect the terminal resistor to the most
downstream IDU of the communication bus (terminal D1 and D2), as shown in fig 5.3.2,
terminal resistor is provided with each ODU.

5.4 Connect Communication Wire of Wired Controller

(1) Open electric box cover of indoor unit.
(2) Let the communication wire go through the rubber ring.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Fix the communication wire with wire clip on the electric box.
(5) Wiring instructions of remote receiving light board and wired controller:
1) Fig 5.4.1 shows the installation of wired controller.
(Standard)
Fig 5.4.1
2) Fig 5.4.2 shows the installation of remote controller.
3) Wired controller and receiving light board can be installed at the same time. When operating
through a remote controller, both wired controller and the receiving light board can receive the
signals, as shown in Fig 5.4.3.
Multi Variable Air Conditioners Duct Type Indoor Unit
terminal board
Fig 5.3.1
(Optional)
Fig 5.4.3
19
indoor unit
(Optional)
Fig 5.4.2
IDU PCB
communication
interface CN12
D1 D2 H1 H2
1
H1 H2
D1 D2
match resistance
previous IDU
for communication
Fig 5.3.2