Explanation Of Circuit And Operation; Block Diagram - Sharp AE-X4M30PU Service Manual

AE-X4M30PU

EXPLANATION OF CIRCUIT AND OPERATION

CPU oscillator circuit
DC over voltage detection circuit
Expansion valve A drive circuit
Expansion valve B drive circuit
Expansion valve C drive circuit
Expersion valve D drive circuit
4-way valve relay drive circuit
Outdoor fan motor drive circuit
Power transistor module drive circuit
Serial I/O circuit
CPU reset circuit
CPU
DC overcurrent detection circuit /
Power transistor module overheat
AC overcurrent detection circuit
Compressor thermo circuit
Heat exchanger pipe thermo circuit
Outdoor temp. thermo. circuit
Suction pipe thermo circuit
Unit A thermo. circuit
Unit B thermo. circuit
Unit C thermo. circuit
Unit D thermo. circuit
LED drive circuit
DIP SW1
DIP SW2
Pump down switch circuit
Wire check switch circuit
Position detection circuit

BLOCK DIAGRAM

2A
Fuse
Power supply
Smoothing
circuit
circuit
PFCM
Filter
module
circuit
DC power supply circuit
Expansion valve A
Expansion valve B
Expansion valve C
Expansion valve D
3.15 A
Fuse
4-way valve
2 A
Fuse
Outdoor fan motor
20 A
Fuse
Power transistor
module
Compressor
Current transformer
Compressor thermistor (RED)
Heat exchanger pipe thermistor (OR)
Outdoor temperature thermistor (GN)
Suction pipe thermistor (BK)
Thermistor unit A (BL)
Thermistor unit B (WT)
Suction thermistor
CN8M
Thermistor unit C (BN)
Thermistor unit D (YL)
LED
Compressor
12
20 A
Fuse
AC power
Unit - unit wiring
(AC power and
serial signals)
CN8A
CN8A
CN8A
CN8A