Gree MULTI VRF SYSTEM II GMV-120WL/A-T

11
DC Inverter Multi VRF System II
Service Manual
CONTROL
2.2.3 Removal method
1 2 3 4
H1H2
H1H2
Fig.2.1.3 Removal of Wired Controller
2.2.4 Connection of communication cord
There are 4 ways to connect wired controller with indoor units’ network:
D
1
D
2
H
1
H
2
D1 D2
Indoor unit
Outdoor unit
D
1
D
2
H
1
H
2
D1 D2
Outdoor unit
Indoor unit
Fig. 2.2.4.1 One wired controller
controls one indoor unit
Fig. 2.2.4.2 Two wired controllers
control one indoor unit
D
1
D2
H
1
H2
D1
D
2
H1
H2
D
1
D
2
H
1
H2
D1 D2
Indoor unit 1 Indoor unit 2
Indoor unit 16
Outdoor unit
Fig. 2.2.4.3 One wired controller controls multiple indoor units simultaneously