Hitachi RAD-25NH4 - BLOCK DIAGRAM

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Wireless receive
circuit
Operation.
Timer.
Auto sweep motor for
Air deflector
Drain Pump Motor
LCD wireless
Heat exchanger
thermistor
Room temperature
thermistor
Reset circuit
Initial setting circuit
Temporary switch
Electric Expansion valve
drive circuit
Electric
Expansion
valve
Outdoor microcomputer / HIC (AX-8N00)
Trip signal
synthesis circuit
L
N
RAD-25NH4 / RAC-25NH4
RAD-40NH4 / RAC-50NH4
SPM2
Outdoor
unit
Terminal
board
Indoor microcomputer (AX-7R11)