Troubleshooting SiBE041029EC79 Service Diagnosis4.17 Discharge Pipe Temperature ControlError Code F3Method of ErrorDetectionAn error is determined with the temperature detected by the discharge pipe thermistor.Error DecisionConditions 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. 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 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.95Check No.12Refer to P.96Check No.14Refer to P.97A (°C) B (°C)50/60 class 110 9571 class 120 107(R20417)CautionNGOKOKOKNGNG∗ Discharge pipe thermistor∗ Outdoor heat exchanger thermistor∗ Outdoor temperature thermistor∗ Refrigerant shortage∗ Four way valve∗ Water mixed∗ Stop valveCheck No. 12Check the electronicexpansion valve.Replace the defectivethermistor(s).Replace the electronicexpansion valve or the coil.Refer to the refrigerant linecheck procedure.Replace the outdoor unitPCB (main PCB).Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.Check No. 01Check the thermistors.Check No. 14Check the refrigerant line.
