Troubleshooting SiBE04-101112 Service Diagnosis4.22 Operation Halt Due to Thermistor Error or Disconnection DetectionRemote ControllerDisplayJ3, J6, H9Outdoor unit LEDDisplayA 5 1 4 2 4 3 3 4 3Method ofMalfunctionDetectionThermistor errors are detected using thermistor input voltage to micro computor. (Thermistor errors aredetected using the temperatures detected by the thermistors.)MalfunctionDecisionConditionsWhen the thermistor input during compressor operation is more than 4.96 V or less than 0.04 V.∗ Value changes depends on modelsSupposed Causes Faulty connector connection Faulty thermistor Faulty PCBTroubleshootingCheck No.1Refer to P.119J3 : Discharge pipe thermistorJ6 : Outdoor unit heat exchanger thermistorH9 : Outside air thermistorCorrect the connection.Replace the thermistor.Replace the outdoor unit P.C.B.Is it normal?Check No.1Thermistor resistance checkCheck the connector connection.YESYESIs it normal? NONO(R1067)CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.SiBE04-101.book Page 112 Monday, October 15, 2001 3:08 PM
