Block Diagram - Hitachi RAK-15QPC Service Manual

BLOCK DIAGRAM

MODEL RAK-15QPC,RAK-18RPC,RAK-25RPC
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
( AX-13D722)
35
1
2
Outdoor unit
Indoor / Outdoor
interface circuit
3
Indoor DC fan motor
Operation
Timer
Vertical sweep motor
Horizontal sweep motor