Haier 1U71S2SG1FA Service Manual page 102

Parts and Functions
Installation Manual For Wire Controller
5. Wiring connections of wire controller:
There are three methods to connection wire controller and the indoor units:
A.One wired controller can control max. up to 16 sets of indoor units, and 3 pieces of polar wire must connect the
wire controller and the master unit (the indoor unit connected with wire controller directly), the others connect with
the master unit through 2 pieces of polar wire
B. One wire controller controls one indoor unit, and the indoor unit connects with the wire controller through 3
pieces of polar wire.
C. Two wired controllers control one indoor unit. The wire controller connected with indoor unit is called master
one, the other is called slave one. Master wire controller and indoor unit; master and slave wire controllers are all
connected through 3 pieces of polar wire.
6. Communication wiring:
The wire controller is equipped with special communication wiring in the accessories. 3-core terminal (1-white
2-yellow 3-red) is connected with the terminal A, B, C of wire controller respectively.
The communication wiring is 5 meter long; if the actual length is more than it, please distribute wiring according to
below table:
Communication wiring length (m)
< 100
≥100 and <200
≥200 and <300
≥300 and <400
≥400 and <600
Wired Controller & Indoor PCB Connection (One For One Wiring Type):
.
INDOOR UNIT PCB
CN22
Note: When do the wired controller & indoor PCB wiring work for model AD50/71S2SM1FA, do not connect
the shielded wired to the unit's shell, do not parallel wiring with strong electric lines within 0.3 meters, please
keep strong lines and the signal lines separately.
Dimensions of wiring
0.3mm
0.5mm
0.75mm
1.25mm
2mm
A
B
C
99
AD90S2SM3FA AD90S2SM4FA
AD105S2SM3FA AD105S2SM4FA
AD125S2SM3FA AD125S2SM4FA
AD140S2SM3FA AD140S2SM4FA
2
x3-core shielded wire
2
x3-core shielded wire
2
x3-core shielded wire
2
x3-core shielded wire
2
x3-core shielded wire
WIRED
CONTROLLER
A
CON1
B
C