3. Diagnosing malfunctions
(1) Tracing faults
FAULT SYMPTOM CAUSE SOLUTION
1. Compressor
Unusual sound
Input sound
Output sound
Lack of lubricant Add
Loose belt Adjust
Loose console
Tighten the
screws
Clutch failure Check
Abnormal speed
Input cause
Damaged parts Check, replace
Clutch slips Check, replace
No lubricant Add
Output cause Belt loosened Adjust
Refrigerant or oil
leakage
Refrigerant or oil
leakage
Sealing washer damaged Replace
Loose screw on the head Tighten
O-Ring damaged Replace
Excessive pressure
Low, high
pressure
Lack of refrigerant Adjust
Compressor Replace
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