SiEBE18-526 Troubleshooting for Outdoor UnitTroubleshooting 3237.28 Malfunction of System, Refrigerant System AddressUndefinedRemoteControllerDisplayUHApplicableModelsAII indoor unit modelsAll BP unit modelsAII outdoor unit modelsMethod ofMalfunctionDetectionMalfunctionDecisionConditionsSupposedCauses Defect of indoor unit PCB Defect of BP unit PCB Defect of outdoor unit PCB (A1P)TroubleshootingCautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.(Q0389)NOYESYESAfter fixing incorrect wiring,push and hold the RESETbutton on the outdoor unitPCB for 5 seconds.NormalNOIselectricitybeing introducefor the first time afterinstallationor after an indooror outdoor or BP unitPCB has beenreplaced?Isindoor - BP andBP - outdoor unittransmission wiringnormal?YESNormalNODoes a malfunctionoccur?NODoesa "UH" malfunction occurfor all indoor units inthe system?YES NODoesa malfunctionoccur even after 12minutes elapses from thetime when electricity isintroduced to BPand outdoorunits?YESReplace BP unit or indoor unitPCB.Replace outdoor unit PCB(A1P).Push and hold the RESETbutton on the outdoor unitPCB for 5 seconds∗ The unit will not run for up to12 minutes.
