SiBE04-101 TroubleshootingService Diagnosis 1094.20 Operation Halt Due to Detection of CT ErrorRemote ControllerDisplayH8Outdoor unit LEDDisplayA 5 1 4 24 3 3 4 3Method ofMalfunctionDetectionCT errors are detected using the compressor's operating frequency and the input current detected by theCT.MalfunctionDecisionConditionsWhen the compressor's operating frequency is more than 56 Hz and the CT input is less than 0.1 V.∗ Input current 0.5 A When a CT error is generated 4 times, the system shuts down.Supposed Causes Faulty power transistor Breaking of wire or faulty connection of internal wiring Faulty outdoor PCB (1). Faulty rectifierTroubleshootingCheck No.14Refer to P.122Check No.14Check capacitor voltage.∗ Isoperation current oninter connecting wire (1) or(3) like as rightfigure?NOYESYESIs voltage350±30 VDC?Is the harnessof the electrical parts connectcorrectly?Doesabnormality displayappear before compressorstarts?Operate unit.Turn off power, and turn on again.NOYESNONOYESTo section about thermistorabnormalitiesReplace outdoor unit PCB.Replace the outdoor unit PCB.Connect correctly.Erroneous wiring/Wire breakage.Replace the outdoor unit PCB.2secCurrent(Approx)Capacitor will be chargedwhen MRM 10 is ON.Current rize togetherwith frequency rize.CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Time(R1178)SiBE04-101.book Page 109 Monday, October 15, 2001 3:08 PM
