Panasonic CS-MVG103KE Service Manual

Panasonic CS-MVG103KE Service Manual Manual pdf 56 page image

12 Servicing Information12.1. TROUBLESHOOTING12.1.1. RATED FREQUENCY OPERATIONDuring troubleshooting and servicing, rated compressor operating frequency must be obtained in order to check the specificationand technical data. Below are the methods used to obtain rated compressor operating specification.1. Cooling· Press the Test Run button on the indoor unit. The air conditioner starts operation at Cooling rated frequency.2. HeatingKeep pressing the Test Run button, outdoor power supply turned off and on, then release the Test Run button. The airconditioner starts operation at Heating rated frequency.12.1.2. TROUBLESHOOTING AIR CONDITIONERRefrigeration cycle systemIn order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Suchproblems include insufficient insulation, problem with the power source, malfunction of a compressor or a fan.The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions; the standard values forthem are shown in the following table.Normal Pressure and Outlet Air Temperature (Standard)Condition:· Indoor fan speed; High· Outdoor temperature is 35 °C at cooling mode and 7 °C at heating mode.· Compressor operates at rated frequency.56CS-MVG103KE / CU-MVG153KE