Panasonic CS-RZ35WKRW Service Manual

Also see for CS-RZ25WKRW: Operating instructions

12018. Troubleshooting Guide18.1 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 the refrigerationcycle depends on various conditions, the standard values for themare 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, expansionvalve or capillary tubeLess than 8°C at the cooling mode.Less than 14°C at the cooling mode.More than 8°C(15 minutes after anoperation is started.)at cooling mode.Above 14°C(15 minutes after anoperation is started.)at heating modeNormal ● Measuring the air temperaturedifferenceNormal Pressure and Outlet Air Temperature (Standard)Gas pressureMPa(kg/cm 2G)Outlet airtemperature(°C)Cooling Mode 0.9 ~ 1.2 (9 ~ 12) 13 ~ 17Heating Mode 2.0 ~ 2.7 (20 ~ 27) 32 ~ 42*Condition: • Indoor fan speed = High• Outdoor temperature 35°C at the coolingmode and 7°C at the heating mode• Compressor operates at rated frequency