Troubleshooting by Indication on the Remote Controller SiBE31-801_C223 TroubleshootingTroubleshootingCautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Provide 220~240V powersupply.Connect either a short circuitconnector or float switch andturn on again.NONOYESYESIs power supply220~240V provided?The float switch isconnected to X8A orX15A of the indoorunit PCB.A short circuitconnector is connectedto X8A or X15A.NOYES NOThe float switchcontact is forming ashort circuit.(continuity checkwith X8A or X15Adisconnected)Becomes normalwhen X8A or X15Aof the indoor unitPCB is shortcircuited.YESYESNONONOYESYESNOYESYESNOYESNOWater builds upin the drain pan.The float switchfunctions normally.The drain pump isconnected to X25A orterminals Y1 and Y2 ofthe indoor unit PCB.The drain pump workswhen the power supplyis reset for the indoorunit.The voltage ofterminals Y1 and Y2or X25A is 220~240V(within 5 minutes ofresetting the powersupply).Defect of indoor unit PCB.Loose connection ofconnector.Replace the float switch.Modify the float switch'sconnection and turn on again.Connect the drain pump andturn on again.Check the drain piping forclogging or upward slope, etc.Replace the indoor unit PCB.Replace the drain pump orcheck for dirt, etc.
