Block Diagram - Hitachi RAK-35RPD Service Manual

BLOCK DIAGRAM

MODEL
RAK-15QPD,RAK-18RPD,RAK-25RPD,RAK-35RPD,RAK-42RPD,RAK-50RPD
Wireless remote
controller
Control
Power circuit
Reset circuit
Wireless receive
/send circuit
Room temperature
thermistor
Heat exchanger
thermistor
EEPROM
Oscillator clock
circuit
INDOOR UNIT
DC fan motor
drive circuit
Indicating lamp
Buzzer circuit
(AX17H721V20)
35
1
2
Outdoor unit
Indoor / Outdoor
interface circuit
3
Indoor DC fan motor
Operation
Timer
Eco sensor
Vertical sweep motor
Horizontal sweep motor