Haier FlexFit Pro Series Service Manual page 114

A TYPE 1, FOR AL24/36/42/48LP2VHA, AM24LP2VHA
Indoor 1 Indoor N
Indoor 2
Wire controller
Wire controller Wire controller
port
port port
TYPE 2, FOR AM36/42/48LP2VHA
Indoor 1 Indoor N
Indoor 2
Wire controller Wire controller
Wire controller
port port
port
B
C
Indoor 1 Indoor 1
Wire controller Wire controller
port wire port wire
Wire controller 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, for Flexifit Pro series indoor units, there are two
connection method ：
Type 1: for model AL24/36/42/48LP2VHA,AM24LP2VHA,the
wiring connection between wired controller - the master unit
(directly connected to the wired controller), master unit -
slave unit, slave unit-slave unit should be one to one match of
all three lines.
Type 2: for model AM36/42/48LP2VHA,The wiring connection
between wired controller-the master unit (directly connected
to the wired controller) should be three polar wire, and the
wiring between master unit - slave unit, slave unit-slave unit
should be one to one match of two polar lines.
Note: PCB DIP switches are used for setting slave units, please refer
to indoor unit wiring diagram.
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.
Note: There are PCB DIP switches for slave or master units
selection, please refer to the indoor unit wiring diagram to get
details.
About the wire:
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.
Indoor 15 Indoor16
(master unit)
Wire controller Wire controller
port port
control wiring of
Wire controller
Wire controller
Indoor16
Indoor 15
(master unit)
Wire controller
Wire controller
port port
control wiring of
Wire controller
Polar wire
Wire controller
Wire controller
The communication wiring is 189ft (4.8 meter) long; if the
actual length is more than it, please distribute wiring
according to below table:
*One side of the shielded sheet of communication wire
must be earthed.
110
FlexFit Pro
Indoor PCB port.
For location
number ,refer
to indoor unit wiring
diagram.