Haier AB36NACBEA Service Manual page 82

Electrical functions of wired controller:
1.Switch over method: wired control master unit/wired control slave
unit/remote control unit
Control method
Socket
/jumper
CN23
CN30
CN21
J19
Signal terminal block
Function difference between master wired controller and slave one:
Contrastive items
Function
2. Wiring connections of wired controller:
A
indoor 1
wired controller
B
indoor 1
wired controller
There are three methods to connection wired controller and the indoor
units:
A. One wired controller can control max. up to 16 sets of indoor units, and
Wired
master unit
Short circuit
Short circuit
Blank
Short circuit
A,B,C connected
to wired controller
Master wired controller
All of functions
indoor 2
wired controller
1 2 3
polar wire
A B C
wired controller
control Wired
slave unit
Not short circuit
Short circuit
Blank
Short circuit
B,C connected to
wired controller
Slave wired controller
Only
ON/OFF, MODE, FAN SPEED,
SET TEMP., SWING
indoor N
wired controller
C
indoor 1
wired controller
1 2 3
polar wire
A B C
wired controller
control Remote control unit
Not short circuit
Not short circuit
To remote
board
Cut circuit
A,B,C not connected
to wired controller
with below
indoor 15
wired controller
control wiring of wired controller, polar.
polar wire
A B C
wired controller
receiver
functions:
indoor 16
(master unit)
wired controller
A B C
wired controller
1