13.2. Relationship Between The Condition Of The Air Conditioner AndPressure And Electric CurrentCooling ModeCondition of the airconditoner Low Pressure High Pressure Electric current duringoperationInsufficient refrigerant (gas leakage)Clogged capillary tube or StrainerShort circuit in the indoor unitHeat radiation deficiency of the outdoor unitInefficient compression• Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.13.3. Diagnosis Methods Of A Malfunction Of A Compressor And 4-wayValveNature 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 anammeter. In some cases, a breaker turns off.Locked compressor• The compressor is a humming sound.60CS-V18DKE CU-V18DKE / CS-V24DKE CU-V24DKE
