Panasonic CS-C18GKV Service Manual

Contents

Panasonic CS-C18GKV Service Manual Manual pdf 48 page image

4814.1.1. Relationship between the condition of the air conditioner and pressure and electriccurrent• 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 compressorCooling ModeCondition of the airconditioner Low Pressure High Pressure Electric current during operationInsufficient refrigerant(gas leakage)Clogged capillary tube orStrainerShort circuit in the indoor unitHeat radiation deficiency of theoutdoor unitInefficient compressionNature 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 has a humming sound.