Hitachi RPIL-1.0PNN1DH Service Manual page 38

3. CHECKING COMPONENTS
3. Compressor
Compressor examine and repair
1.0/1.5HP(9K/12K): ASN108D43UFZA
2.0HP(18K): ATM150D23UFZ
3.0HP(24K): EATF250D22UMT
4.0HP(36K): ATF310D43UMT
Power
Test in resistance.
TOOL: Multi-meter.
Test the resistance of the winding. The compressor fails if the resistance of winding is 0
(short circuit)or∞(open circuit).
Familiar error:
1) Compressor motor lock.
2) Discharge pressure value approaches static pressure value.
3) Compressor motor winding abnormality.
Notes：
1)
Don't put a compressor on its side or turn over.
2)
Please assemble the compressor in your air conditioner rapidly after removing the plugs.
Don't place the comp. in air for a long time.
3)
Avoid compressor running in reverse caused by connecting electrical wire incorrectly.
4)
Warning! In case AC voltage is impressed to compressor, the compressor performance will
decrease because of its rotor magnetic force decreasing.
3. Inductance
Familiar error:
1)Sound abnormality
2)Insulation resistance disqualification
DC Inverter
&
Controller
Thermal Sensor
Compressor
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