Haier AU96NFTAHA - 9. Block diagram of indoor unit control

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9. Block diagram of indoor unit control
Remote contro-
ller (Master)
Remote contro-
ller (Slave)
Timer
Central
controller
Transformer
Indoor controller
Central
management
system
Serial com-
munication
BUS communic-
ation circuit
Cool
control
system
Power
supply
Power
supply
loop
Multiplex
convertor
Zero cross
detection
Choice of
airflow
Float
switch
Optical coupler
BA C D BA C D
X
Y
P
Q
TA
TC1A
TC1B
TC2
PMV
CN06
CN13
HA
CN17
CN19
temperature
sensor OFF
E2PROM
PMV
TB4051BP
5A
L
N
5V
MCU
TMP87PM40AN
A B D
X Y
DC
Pressure
sensor
Louver
fan
Drain
pump
AC
contactor
AC contactor
Mg.sw
Relay
driver
Switch for
function, type
driving loop
Switch for
function, type
Fan
motor
Capacitor
Hell element
Noise filter
Silicon
control
drive
LED displaying
abnormal indoor
and outdoor
communication
Selectable function
Compressor
Running
Abnormal
Heating
Humidifying
Interlocking
(MCC-1333-02: speed regulating of silicon control )
BUS communic-
ation circuit
12V AC
CN12
TA: room temperature sensor TC1A: pipe temperature sensor
TC1B: same TC1A TC2: pipe sensor
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