Chapter 2. Explanation Of Circuit And Op; Block Diagarm; Eration 1] Block Diagarm - Sharp AE-X2M14LR Service Manual

CHAPTER 2.
AEX2M14LR
EXPLANATION OF CIRCUIT AND OPERATION

[1] BLOCK DIAGARM

Power supply circuit
CPU oscillator circuit
DC over voltage detection circuit
Expansion valve A drive circuit
Expansion valve B drive circuit
Expansion valve C 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
AC overcurrent detection
Compressor thermo. circuit
Heat exchanger pipe thermo. circuit
Outdoor temp. thermo. circuit
Suction pipe thermo. circuit
Heat sink thermo. circuit
Unit A thermo. circuit
Unit B thermo. circuit
LED drive circuit
Pump down switch circuit
Wire check switch circuit
Position detection circuit
Thermal fuse circuit
1 A
Fuse
Smoothing circuit
DC power supply circuit
Expansion valve A
Expansion valve B
Expansion valve C
4-way valve
Outdoor fan motor
Power transistor module
Compressor
Current transformer
Compressor thermistor
Heat exchanger pipe thermistor
Outdoor temperature thermistor
Suction pipe thermistor
Heat sink thermistor
Thermistor unit A
Thermistor unit B
LED
Compressor
Thermal fuse in terminal board
2 – 1
Service Manual
Filter circuit
Active filter circuit
3.15 A
Fuse
2 A
Fuse
20 A
Fuse
(RE)
(OR)
(G)
(BK)
(BK)
(BL)
(WH)
CN5
AEX2M14LR
20 A
Fuse
AC power
Unit - unit wiring
(AC power and serial
signals)
CN8A
CN8A
CN8A
CN8A
CN8B
Suction thermistor CN8C