Panasonic CS-G93KE Service Manual

Panasonic CS-G93KE Service Manual Manual pdf 46 page image

– 51 –CS-G93KEl Measure the electric currentduring operationl Measure the gas side pressurel Measure the air temperaturedifferenceServicing InformationLower than specifiedCooling ModeLowLowLowLowLowHigh2. TROUBLESHOOTING AIR CONDITIONERRefrigeration cycle systemIn order to diagnose malfunctions, make sure thatthere are no electrical problems before inspect-ing the refrigeration cycle. Such problems includeinsufficient insulation, problem with the power source,malfunction of a compressor or a fan.The normal outlet air temperature and pressureof the refrigeration cycle depends on various condi-tions; the standard values for them are shown in thetable on the right.Normal Pressure and Outlet Air Temperature (Standard)Outlet airtemperature (°C)12 ~ 1636 ~ 45H Condition: • Indoor fan speed; High.• Outdoor temperature is 35°C at coolingmode and 7°C at heating mode.• Compressor operates at rated frequency.Cooling modeHeating ModeGas pressureMPa (kg/cm2G)0.4 ~ 0.6 (4 ~ 6)1.5 ~ 2.1 (15 ~ 21)Inefficient compressorInsufficient refrigerantInefficient compressorInsufficient refrigerantClogged strainer orcapillary tubeClogged strainer orcapillary tubeDifference in the intakeand outletair temperaturesValue of electriccurrent during operationNormalExcessive amountof refrigerantDusty condenserpreventing heat radiationAbove 8°C(15 minutes after anoperation is started.)at cooling modeAbove 14°C(15 minutes after anoperation is started.)at heating modeLess than 8°C at cooling modeLess than 14°C at heating modeHigher than specifiedHeating ModeGas sidepressure