44
14.1.1.
Relationship between the condition of the air conditioner and pressure and electric
current
• Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.
14.1.2.
Diagnosis methods of a malfunction of a compressor
Cooling Mode
Condition of the air
conditioner
Low Pressure
High Pressure
Electric current during operation
Insufficient refrigerant
(gas leakage)
Clogged capillary tube or
Strainer
Short circuit in the indoor unit
Heat radiation deficiency of the
outdoor unit
Inefficient compression
Nature of fault
Symptom
• Electric current during operation becomes approximately 20% lower than the normal value.
Insufficient compressing of a compressor
• The discharge tube of the compressor becomes abnormally hot (normally 70 to 90
°
C).
• The difference between high pressure and low pressure becomes almost zero.
• Electric current reaches a high level abnormally, and the value exceeds the limit of an
ammeter. In some cases, a breaker turns off.
Locked compressor
• The compressor has a humming sound.
Summary of Contents for CS-C12GKF
Page 9: ...9 5 Dimensions 5 1 Indoor Unit Remote Control 5 1 1 CS C12GK ...
Page 10: ...10 5 2 Outdoor Unit 5 2 1 CU C12GK ...
Page 11: ...11 6 Refrigeration Cycle Diagram ...
Page 12: ...12 7 Block Diagram ...
Page 14: ...14 9 Electronic Circuit Diagram ...
Page 15: ...15 10 Printed Circuit Board 10 1 Indoor Unit TOP VIEW ...
Page 16: ...16 BOTTOM VIEW ...
Page 17: ...17 10 2 Indicator TOP VIEW BOTTOM VIEW ...
Page 46: ...46 ...
Page 47: ...47 15 2 Indoor Fan Motor and Cross Flow Fan Removal Procedures ...
Page 48: ...48 ...
Page 49: ...49 16 Technical Data 16 1 Thermostat Characteristics Cooling Soft Dry ...
Page 50: ...50 16 2 Operation Characteristics 16 2 1 CS C12GK CU C12GK ...
Page 51: ...51 ...
Page 53: ...53 ...