Panasonic CS-RE9PKE-3 Service Manual

Also see for CS-RE12PKE-3: Operating instructions Operating instructions

Panasonic CS-RE9PKE-3 Service Manual Manual pdf 35 page image

3513. Troubleshooting Guide13.1 Refrigeration cycle systemIn order to diagnose malfunctions, make sure that there are noelectrical problems before inspecting the refrigeration cycle. Suchproblems include insufficient insulation, problem with the powersource, malfunction of a compressor and a fan. The normal outletair temperature and pressure of the refrigeration cycle depends onvarious conditions, the standard values for them are shown in thetable on the right.Normal Pressure and Outlet Air Temperature (Standard)Gas PressureMpa(kg/cm2G)Outlet airTemperature(°C)Cooling Mode 0.9~1.2 ( 9~12) 12~16Heating Mode 2.3 ~2.9 (23~29) 36~45Condition: Indoor fan speed = HighOutdoor temperature = 35°C at cooling mode and 7° C atheating mode.Compressor operates at rated frequencyDifferent in the intakeand outletair temperaturesNormalValue of electric currentduring operationDusty condenserpreventing heat radiationExcessive amountof refrigerant• Measuring the airtemperature different• Measuring electriccurrent during operation• Measuring gas sidepressureMore than 8°C(15 minutes after an operationis started) at cooling mode.Above 14°C (15 minutes afteran operation is started.) atheating modeLess than 8°C at the cooling modeLess than 14°C at the heating modeHigher than specifiedLower thanspecifiedGas sidepressure Inefficient compressorInsufficient refrigerantClogged strainer orcapillary cubeCoolingModeHighLowLowInefficient compressorInsufficient refrigerantClogged strainer orcapillary cubeHeatingModeLowLowLow