Troubleshooting by Indication on the Remote Controller SiBE31-801_C269 Troubleshooting4.32 “J9” Outdoor Unit: Malfunction of Subcooling HeatExchanger Gas Pipe Thermistor (R5T)RemoteControllerDisplayJ9ApplicableModelsRTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit)Method ofMalfunctionDetectionMalfunction is detected according to the temperature detected by subcooling heat exchangergas pipe thermistor.MalfunctionDecisionConditionsWhen the subcooling heat exchanger gas pipe thermistor is short circuited or open circuited.SupposedCauses Faulty subcooling heat exchanger gas pipe thermistor (R5T) Faulty outdoor unit PCBTroubleshooting∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P.408.CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Is the connector forsubcooling heatexchanger gas pipethermistor connected toX30A on outdoor unitPCB (A1P)?NOYESIs the resistancemeasured afterremoving thethermistor (R5T) fromoutdoor unit PCBnormal? (1.8kΩ to800kΩ)NOYESConnect the connector and operatethe unit again.Replace the thermistor (R5T).Replace the outdoor unit PCB(A1P).
