Panasonic CS-RE9SKUA Service Manual

Also see for CS-RE12SKUA: Installation manual Operating instructions

6917. Troubleshooting Guide17.1 Refrigeration Cycle SystemIn order to diagnose malfunctions, make sure that there are noelectrical problems before inspecting the refrigeration cycle.Such problems include insufficient insulation, problem with thepower source, malfunction of a compressor and a fan.The normal outlet air temperature and pressure of therefrigeration cycle depends on various conditions, the standardvalues for them are shown in the table on the right.Value of electriccurrent during operationDifference in the intakeand outletair temperaturesLower than specifiedHigher than specifiedCooling ModeHeating ModeHighLowLowLowLowLowGas sidepressureDusty condenserpreventing heat radiation● Measuring electric currentduring operation● Measuring gas side pressureExcessive amountof refrigerantInefficient compressorInsufficient refrigerantInsufficient refrigerantInefficient compressorClogged strainer orexpansion valveClogged strainer orcapillary tubeLess than 14.4°F at the cooling mode.Less than 25.2°F at the cooling mode.More than 14.4°F(15 minutes after anoperation is started.)at cooling mode.Above 25.2°F(15 minutes after anoperation is started.)at heating modeNormal ● Measuring the air temperaturedifferenceNormal Pressure and Outlet Air Temperature (Standard)Gas PressurePSI(kg/cm 2G)Outlet airTemperature(°F)Cooling Mode 130.53 ~ 174.04(9 ~ 12) 53.6 ~ 60.8Heating Mode 333.58 ~ 420.60(23 ~ 29) 96.8 ~ 113Condition: Indoor fan speed = HighOutdoor temperature 95°F at cooling modeand 44.6°F at heating mode.Compressor operate at rated frequency