Hitachi RAS-14JH4 - Page 31

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Wireless receive
circuit
Filter.
Operation.
Timer
Self Clean.
Two Way Air Exchange.
.
Auto
Ventilation damper motor
Ventilation fan motor
sweep motor
Remote controller
Heat exchanger
thermistor
Room temperature
thermistor
Reset circuit
Initial setting circuit
Te mporary switch
Two Way Air Exchange
Selection switch
Outdoor microcomputer (AX-8T11)
RAS-10JH3 / RAC-10JH3MODEL
RAS-14JH3 / RAC-14JH3
Indoor microcomputer (AX-7T12)
INDOOR UNIT OUTDOOR UNIT
POWER RELAY
POWER
SWITCH
Inrush current
Protection circuit
HARMONICS
IMPROVEMENT
CIRCUIT
IPM
Rotor magnetic
pole position
detection circuit
lp
ld
ls
Buzzer circuit
Indicating lamp
Indoor/Outdoor
interface circuit
DC fan moter drive
circuit
Microcomputer clock
circuit
Indoor DC
fan moter
Overheat thermistor
Defrost thermistor
Outdoor temperature thermistor
Indoor/Outdoor
interface circuit
Reversing valve coil
Power circuit
Reset
circuit
Outdoor DC fan motor
RECTIFIER
DC compressor
motor
Relay drive circuit
Electric expansion valve
Reversing valve
control circuit
Power source
1ø 50Hz 220-230V
BLOCK DIAGRAM