Perfect Aire 3PAMSHHQC18-MZO2, Technical & Service Manual

Page: 70 / 74

1 5
. CHECKING COMPONENTS
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:
Notes
：
1)
Don’t put a compressor on its side or turn over.
2)
Please assembly the compressor in your air conditioner rapidly after removing the plugs.
Don’t place the comp. In air for a long time.
3)
Avoiding 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.
1) Compressor motor lock.
2) Discharge pressure value approaches static pressure value.
3) Compressor motor winding abnormality.
3 . Inductance
Familiar error:
1
）
Sound abnormality
2
）
Insulation resistance disqualification.
4 . Step motor
5
4
2
1
Test in resistance.
TOOL: Multimeter.
Test the resistance of winding. The stepper motor fails if the resistance of winding is 0
(short circuit) or ∞
（
open circuit
）
.
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