Haier AU96NFTAHA - Page 105

102
Block diagram of indoor unit control
(MCC-1256 MCC-1234-01: relay speed regulating)
Remote
controller
(Master)
Remote
controller
(Slave)
Central
controller
Timer
Transformer
Indoor controller
Central
manageme
nt system
Serial com-
munication
BUS comm-
unication circuit
BUS comm-
unication circuit
Cool control
system
Power
supply
Power
supply
loop
Multiplex
convertor
Zero cross
detection
choice of
airflow
Float
switch
Optical
coupler
Louver
AC contactor
Drain
pump
Relay
driver
Switch for
function, type
LEDdisplaying
abnormal indoor
and outdoor
communication
Switch for
function, type
PMV
driving loop
Fan
motor
Capacitor
Selectable function
BA C D BA C D
X
Y
P
Q
T A
TC1A
TC1B
TC2
PMV
CN06
CN13
HA
CN17
CN19
E2PROM
TB4051BP
5A
L
N
5V
MCU
TMP87PM40AN
A B D
X Y
Compressor
Running
Abnormal
Heating
Humidifying
Interlocking
temperature
sensor OFF
Pressure
sersor
12V AC
CN12
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