Haier AB242ACBEA Service Manual page 82

Electrical functions of wired controller:
1.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
3 pieces of polar wire must connect the wired controller and the master
unit (the indoor unit connected with wired controller directly), the others
connect with the master unit through 2 pieces of polar wire.
Master wired controller
All of functions
indoor 2
wired controller
1 2 3
polar wire
A B C
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
polar wire
A B C
wired controller
with below
indoor 15
wired controller
control wiring of wired controller, polar.
A B C
wired controller
functions:
indoor 16
(master unit)
wired controller
A B C
wired controller