75
15.1.1 Relationship between the condition of the air conditioner and pressure and
electric current
Cooling Mode
Condition of the
air conditioner
Low Pressure
High Pressure
Electric current during operation
Insufficient refrigerant
(gas leakage)
Ô
Ô
Ô
Clogged capillary tube or
strainer
Ô
Ô
Ô
Short circuit in the indoor unit
Ô
Ô
Ô
Heat radiation deficiency
of the outdoor unit
Ò
Ò
Ò
Inefficient compression
Ò
Ô
Ô
• Carry out the measurement of pressure, electric current, and temperature fifteen minutes after an operation is started.
15.1.2 Diagnosis methods of a malfunction of a compressor
Nature of fault
Symptom
Insufficient compressing of a compressor
• Electric current during operation becomes approximately 20% lower than the normal value.
• The discharge tube of the compressor becomes abnormally hot (normally 70°C to 90°C).
• The different between high pressure and low pressure becomes almost zero.
Locked compressor
• Electric current reaches a high level abnormally, and the value exceeds the limit of an
ammeter. In some cases, a breaker turns off.
• The compressor has a humming sound.
Summary of Contents for CS-C12MKV
Page 12: ...12 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...
Page 13: ...13 5 Dimensions 5 1 Indoor Unit 5 1 1 CS C9MKV CS C12MKV ...
Page 14: ...14 5 1 2 CS C18MKV CS C24MKV CS C28MKV ...
Page 15: ...15 5 2 Outdoor Unit 5 2 1 CU C9MKV 5 2 2 CU C12MKV ...
Page 16: ...16 5 2 3 CU C18MKV CU C24MKV CU C28MKV ...
Page 17: ...17 6 Refrigeration Cycle Diagram ...
Page 18: ...18 7 Block Diagram 7 1 1 CS C9MKV CU C9MKV CS C12MKV CU C12MKV ...
Page 19: ...19 7 1 2 CS C18MKV CU C18MKV CS C24MKV CU C24MKV ...
Page 20: ...20 7 1 3 CS C28MKV CU C28MKV ...
Page 26: ...26 9 Electronic Circuit Diagram 9 1 CS C9MKV CU C9MKV ...
Page 27: ...27 9 2 CS C12MKV CU C12MKV ...
Page 28: ...28 9 3 CS C18MKV CU C18MKV ...
Page 29: ...29 9 4 CS C24MKV CU C24MKV ...
Page 30: ...30 9 5 CS C28MKV CU C28MKV ...
Page 32: ...32 10 1 1 2 CS C18MKV CS C24MKV CS C28MKV ...
Page 34: ...34 10 1 6 Human Activity Sensor Printed Circuit Board ...
Page 77: ...77 Figure 3 Figure 4 16 1 1 3 To remove discharge grille Figure 5 ...
Page 79: ...79 Figure 9 Figure 10 ...
Page 81: ...81 16 2 1 3 To remove power electronic controller Figure 13 Figure 14 Figure1 5 ...
Page 83: ...83 Figure 19 Figure 20 Figure 21 ...
Page 85: ...85 16 3 1 3 To remove power electronic controller Figure 24 Figure 8 Figure 9 ...
Page 87: ...87 Figure 30 Figure 31 Figure 32 ...
Page 88: ...88 17 Technical Data 17 1 Thermostat Characteristics Cooling Soft Dry ...
