IVT 12PHR-N Service Manual page 8

12PHR-N
2. Outdoor unit
AC clock circuit
Pulse amplitude modulation circuit
Power supply circuit
CPU oscillator circuit
DC overvoltage detection circuit
Outdoor fan drive circuit
4-way walve relay drive circuit
DC overcurrent detection circuit
Power transistor module drive circuit
Serial I/O circuit
CPU reset circuit
Position detection circuit
CPU
AC overcurrent detection circuit
Compressor thermo circuit
Heat exchanger pipe thermistor circuit
Outdoor temp thermo circuit
EEPROM
LED drive circuit
Test mode circuit
Expansion valve drive circuit
Suction temp,thermo,circuit
2-way walve temp,thermo,circuit
Terminal board,Terminal fuse,circuit
Select Circuit
12PHR-N_S530612PHRN.indd 2
IGBT
Smoothing Power factor
circuit converter circuit
Outdoor fan
4-way valve
Power transistor module
Compressor
Current transformer
Compressor thermistor
Heat exchanger pipe thermistor
Outdoor temperature thermistor
LED
Expansion valve
Suction pipe themistor
2-way valve themistor
Terminal board,Terminal fuse
MAX f, Winter Cool
2-2
20A
protecition
Unit-unit wiring (AC
Filter
powewr and serial
circuit
signals)
3.15A
protecition
15A
protecition
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