Troubleshooting by Indication on the Remote Controller SiBE31-801_C263 Troubleshooting4.26 “J3” Outdoor Unit: Malfunction of Discharge PipeThermistor (R31T, R32T, R33T)RemoteControllerDisplayJ3ApplicableModelsRTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit)Method ofMalfunctionDetectionMalfunction is detected from the temperature detected by discharge pipe temperaturethermistor.MalfunctionDecisionConditionsWhen a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.SupposedCauses Defect of thermistor (R31T, R32T, R33T) for outdoor unit discharge pipe Defect of outdoor unit PCB (A1P) Defect of thermistor connectionTroubleshootingThe alarm indicator is displayed when the fan is being used also.∗ 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.Connector isconnected to X29Aof outdoor unit PCB(A1P).NO Connect the connector and turn onagain.Confirm which dischargethermistor is abnormal usingoutdoor unit "monitor mode".(Refer to P.216~217)Resistance is normalwhen measured afterdisconnecting thethermistor R31, 32T orR33T from the outdoorunit PCB. (2.5kΩ to1.3kΩ)YESNOYESReplace the thermistor (R31, 32Tor R33T)Replace the outdoor unit PCB(A1P).
