Block Diagram - Hitachi RAK-25NH4 Service Manual

RAK-25NH4 / RAC-25NH4
RAK-35NH4 / RAC-35NH4
RAK-50NH4 / RAC-50NH4
Wireless receive
LCD wireless
circuit
Room temperature
thermistor
Heat exchanger
thermistor
Temporary switch
Initial setting circuit
Reset circuit
Power source
1ø, 50Hz, 220~230V
L
N
Outdoor
unit
Terminal
board
Filter.
Operation.
Timer.
Auto sweep motor for
Air deflector
SPM2
Trip signal
synthesis circuit
Electric
Expansion
valve
Electric Expansion valve
drive circuit
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