Troubleshooting SiUS04111196 Service Diagnosis4.14 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, the compressorstops. The error is cleared when the discharge pipe temperature has dropped below B.09/12 class15/18/24 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 A B°C °F °C °F(1) above 50 Hz (rising), above 45 Hz (dropping) 110 230 97 206.6(2) 39 ~ 50 Hz (rising), 34 ~ 45 Hz (dropping) 105 221 92 197.6(3) below 39 Hz (rising), below 34 Hz (dropping) 100 212 87 188.6Stop temperatures A B°C °F °C °F(1) above 50 Hz (rising), above 45 Hz (dropping) 118 244.4 85 185(2) 35 ~ 50 Hz (rising), 30 ~ 45 Hz (dropping) 110 230 77 170.6(3) below 35 Hz (rising), below 30 Hz (dropping) 93 199.4 60 140
