Troubleshooting SiENBE04-925_A92 Service Diagnosis4.14 Discharge Pipe Temperature ControlRemote ControlDisplayF3Method 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 °C, thecompressor stops. The error is cleared when the discharge pipe temperature has dropped below °C.<20 class><25 class><35 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 electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCBStop temperatures (°C) (°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 86Stop temperatures (°C) (°C)(1) above 30Hz (rising), above 25Hz (dropping) 110 95(2) below 30Hz (rising), below 25Hz (dropping) 108 93(°C) (°C)110 95
