Troubleshooting SiBE06112197 Service Diagnosis4.15 Discharge Pipe Temperature ControlRemoteControllerDisplayF3Method ofMalfunctionDetectionAn error is determined with the temperature detected by the discharge pipe thermistor.MalfunctionDecisionConditions If the temperature detected by the discharge pipe thermistor rises above A °C, thecompressor stops. The error is cleared when the discharge pipe temperature has dropped below B °C.<25/35 class><50 class> If the error repeats, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other errorSupposedCauses Defective discharge pipe thermistor(Defective outdoor heat exchanger thermistor or outdoor temperature thermistor) Defective outdoor electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCBTroubleshootingCheck No.01Refer to P.121Check No.12Refer to P.123Check No.14Refer to P.124Stop temperatures A (°C) B (°C)(1) above 45 Hz (rising), above 40 Hz (dropping) 110 97(2) 30 ~ 45 Hz (rising), 25 ~ 40 Hz (dropping) 105 92(3) below 30 Hz (rising), below 25 Hz (dropping) 99 86A (°C) B (°C)110 95(R15286)CautionNGOKOKOKNGNG∗ Discharge pipe thermistor∗ Outdoor heat exchanger thermistor∗ Outdoor temperature thermistor∗ Refrigerant shortage∗ Four way valve∗ Water mixed∗ Stop valveCheck No. 01Check the thermistors.Check No. 14Check the refrigerantline.Check No. 12Check the outdoor electronicexpansion valve.Replace the defectivethermistor.Replace the outdoorelectronic expansion valveor the coil.Refer to the refrigerant linecheck procedure.Replace the outdoor unitPCB.Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.
