Indoor Unit Wiring Diagram; Indoor Control Board - Haier AU482FIBHA Service Manual

Ceiling concealed type：
electronic
expansion valve
black
gas pipe temp.
sensor
liquid pipe temp.
blue
sensor
ambient temp.
sensor
1 2
float switch
CN2
LED3 LED2 LED1
SW1
CN1
receive display
A B C D
wired controller
outdoor
communication

Indoor unit wiring diagram

M M
refresh air fan
motor
1 2 3 4 5 6 1 2 3
CN6 CN9
CN5
serial
CN11
unit code setting
CN16

indoor control board

CN15
2 1
CN13
RL7 RL6 RL5 RL4
CN14
CN1 CN10 CN4
2 1 7 6 5 4 3 2 1 3 2 1
red red
fan capacitor
connector
M
earthing
yellow/green
indoor fan motor
negative ion generator or high
pressure accumulator
electronic
expansion valve
box power supply
and communication
NOTE：
Must connect electronic expansion valve
indoor power
box power and communication from
corresponding indoor,wiring sequence must
correspond with the label
respectively,other wise, will cause PCB
of indoor and electronic expansion valve
box not work and damaged.
blue blue
1 2 3
CN8
CN17
CN23
FUSE
3.15A/250VAC
RL3 RL2 RL1
CN7 CN12 CN19 CN20
3 2 1 3 2 1
black red red
M M
pump motor swing motor
FUSE
T15A/250VAC
resumeable heat
protector
80℃，10A/250VAC
one-off heat
protector
105℃，10A/250VAC
only applicable for unit with
auxiliary electric heater
NOTE:the dashed "－－－"in indoor controll
board is PCB inner wiring.
About control board outer connector:
in the diagram,gas pipe temp. sensor
、liquid pipe temp. sensor、indoor fan motor
、transformer are necessary parts；wired
controller、receive display、electronic
expansion valve、float switch、pump motor
、swing motor are parts matched with the
model(combined usage）；auxiliary electric
heater、refresh air fan motor、negative ion
generator、high pressure accumulator are
transformer
optional parts for health and comfort
（combination usage arbitrarily).wired
controller and receive display only can
choose one at will.
brown the unit with remote controller is matched
CN25
with receive display:
CN18
white
short connected with a jump wire；
CN22 switch and pump motor；
switch、pump motor and swing motor；
connected with a jump wire，connected with
swing motor；
the unit with wired controller(equipped
with wired controller，can make remote
operation on wired controller with remote
CN3
controller such as YR-H39)：
1 2
jump wire，other parts are as the same as
remote control unit.。
bulit-out electronic expansion valve
setting(MP3)：CN23 is cut circuit，CN25 is
connected with electronic expansion valve
communication,and the electronic expansion
valve box(MP3) control indoor refrigerant
flow.
built-in electronic expansion valve
setting：CN23 is short connected with a jump
wire，CN6 is connected with electronic
expansion valve，and indoor unit control
refrigerant flow itself。
auxiliary heater
indicator（running－red）
LED3
indicator（timer－yellow）
LED2
LED1 indicator（power－green）
1.ceiling concealed type:CN11 must be
2.duct type：connected with float
3.cassette type:connected with float
4.cabinet type:CN11 must be short
short connect CN15、CN17 together with
SW1
emergency switch(ON/OFF)
indoor fan motor
RL7
low-speed relay
indoor fan motor
RL6
Mid-speed relay
indoor fan motor
RL5
High-speed relay
health function module
RL4
relay
RL3 pump motor relay
RL2 swing motor relay
auxiliary eletric
RL1
heater relay