Haier Unitary smart series Service Manual page 250

Electrical functions of wired controller:
1.Function difference between master wired controller and slave one:
Contrastive items
Function
2. Function difference between simple wired controller and the standard one:
Contrastive item
Function
Master/Slave
selection
3. 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.
B. One wired controller controls one indoor unit, and the indoor unit connects
with the wired controller through 3 pieces of polar wire.
C. Two wired controllers control one indoor unit. The wired controller
Master wired controller
All of functions
Standard wired controller
With all functions
Can be either of Master
and Slave controller
indoor 2
wired controller
polar wire
wired controller
a__WcU S^
Slave wired controller
Only
ON/OFF, MODE, FAN SPEED,
SET TEMP., SWING
Simple wired controller
Only can control ON/OFF, MODE,
FAN, TEMP.,SWING.
Only can be Master controller
indoor N
wired controller
C
indoor 1
wired controller
polar wire
polar wire
wired controller
c a`V e a`Wc
with below functions:
indoor 15
wired controller
control wiring of wired controller, polar.
wired controller
indoor 16
(master unit)
wired controller
wired controller