13.1.1. Relationship between the condition of the air conditioner and pressure and
electric current
Cooling Mode
Heating Mode
Condition of the air
conditoner
Low Pressure
High Pressure
Electric current
during operation
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
•
•
•
•
Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.
13.1.2. Diagnosis methods of a malfunction of a compressor and 4-way valve
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 is a humming sound.
•
•
•
•
Electric current during operation becomes approximately 80% lower than the normal value.
Insufficient switches of the 4-way valve
•
•
•
•
The temperature different between from the discharge tube to the 4-way valve and from
suction tube to the 4-way valve becomes almost zero.
69
CS-W18CKE CU-W18CKE / CS-W24CKE CU-W24CKE
Summary of Contents for CS-W18CKE
Page 10: ...4 Dimensions 10 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 11: ...11 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 12: ...5 Refrigeration Cycle Diagram 12 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 13: ...6 Block Diagram 13 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 14: ...7 Wiring Diagram CS W18CKE CU W18CKE CS W24CKE CU W24CKE 14 ...
Page 34: ...34 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 36: ...39 40 41 38 36 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 37: ...39 37 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 38: ...35 37 38 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 39: ...38 39 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 40: ...39 40 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 41: ...41 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 70: ...14 Technical Data 70 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 72: ...72 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 73: ...73 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 82: ...SCHEMATIC DIAGRAM 5 5 82 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
Page 84: ...19 1 REMOTE CONTROL 84 CS W18CKE CU W18CKE CS W24CKE CU W24CKE ...
