Panasonic CS-MZ5SKE Service Manual

Also see for CS-MZ5SKE: Operating instructions

Panasonic CS-MZ5SKE Service Manual Manual pdf 69 page image

6913. Troubleshooting Guide13.1 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.Difference in the intakeand outletair temperatures More than 8°C(15 minutes after anoperation is started.)at cooling mode.Above 14°C(15 minutes after anoperation is started.)at heating mode.Value of electriccurrent during operationNormalInefficient compressorInsufficient refrigerantExcessive amountof refrigerantDusty condenserpreventing heat radiation• Measuring the air temperaturedifference• Measuring electric currentduring operationLess than 8°C at the cooling modeLess than 14°C at the heating mode.Higher than specifiedGas sidepressureClogged strainer orcapillary tube• Measuring gas side pressureCooling Mode HighLower than specifiedLowLowInefficient compressorInsufficient refrigerantClogged strainer, capillarytube or expansion valveHeating ModeLowLowHighNormal Pressure and Outlet Air Temperature (Standard)Gas PressureMPa(kg/cm 2G)Outlet airTemperature(°C)Cooling Mode 0.9 ~ 1.2 (9 ~ 12) 12 ~ 16Heating Mode 2.3 ~ 2.9 (23 ~ 29) 36 ~ 45*Condition: • Indoor fan speed = High• Outdoor temperature 35°C at the coolingmode and 7°C at the heating mode• Compressor operates at rated frequency