Panasonic CU-4E24RBU Service Manual

Also see for CU-3E19RBU: Operating instructions Service manual Service manual Service manual Installation manual

7715.2.22 F98 (Total Running Current Protection)Malfunction Decision Conditions During operation of cooling and heating, when an input over-current (20.0A) is detected by checking the inputcurrent value being detected by current transformer (CT) with the compressor running.Malfunction Caused Over-current due to compressor failure. Over-current due to defective outdoor unit PCB. Over-current due to defective inverter main circuit electrolytic capacitor. Over-current due to excessive refrigerant.Abnormality Judgment: 3 times happen within 20 minutes.TroubleshootingFor safety reason and to prevent componentbreakdown, always switch off the power beforeremove and connect the component.Input current > 16.8A?YesGet restarted andmeasure the inputcurrent.NoYesReplace the outdoor unitPCB.NoTurn off power supply.Check the main circuitelectrolytic capacitor.Normal? Replace the outdoor unitPCB.Check refrigerant amount.Excess refrigerant? Reclaim and recharge withcorrect amount of refrigerant.Replace outdoor unit PCB.NoYesKeep the tester in theresistance measuring range.When the pointer swings,it means the capacitorfunctions.If the pointer does not swing at all,or if it swings all the way but doesnot return, it means the capacitormalfunction. (O0367)