Block Diagram - Sharp AH-S22AW2 Service Manual

AH-S22AW2
AH-S25AW2
INDOOR UNIT for AH-S22AW2 and AH-S25AW2
DC power supply circuit
Fan motor phase control circuit
Rotation pulse input circuit
AC clock circuit
Louvre motor drive circuit
Remote controller signal
reception circuit
Buzzer drive circuit
CPU reset circuit
CPU oscillator circuit
Room temp. detect circuit
CPU
Heat exchanger pipe thermo circuit
Compensation circuit/
select circuit
Compensation circuit
Switchover circuit
Serial I/O circuit
Compressor relay drive circuit
LED drive circuit
Auto restart circuit
Test run circuit
Auxiliary mode
Power on circuit
BLOCK DIAGRAMS
Room fan motor
Fan motor pulse detect
Flow direction control
(louvre motor)
Wireless remote control
operation
Audible operation confirmation
Room temp. thermistor
Heat exchanger pipe thermistor
Blower temperature,
fan speed, model select
Outdoor ratings
Wireless, preheat
Indoor/outdoor control signal I/O
Outdoor unit power supply
on/off control
LED display
Test run (forced operation)
Auxiliary mode button ON/OFF
Self diagnostics,
fault diagnosis
8
AC power
2.5 A
FUSE
Unit-unit
wiring (AC
power and
serial
signals)