SiEBE18-526 Troubleshooting for SkyAir Indoor UnitTroubleshooting 2715.3 Malfunction of Drain SystemRemoteControllerDisplayAFApplicableModelsFHQ-BUMethod ofMalfunctionDetectionWater leakage is detected based on float switch ON/OFF operation while the compressor is innon-operation.MalfunctionDecisionConditionsWhen the float switch changes from ON to OFF while the compressor is in non-operation.SupposedCauses Error in drain pipe installation Faulty float switch Faulty indoor unit PCBTroubleshootingAre floatswitch and drain pipenormal?Is waterdrainage systemnormal?Possible failure of float switch.Check to see if drain-up heightand horizontal pipe lengthexceed specifications.Clogged drain water dischargesystemClogged drain pumpFaulty float switchReplace indoor unit PCB.Check jumper connectorX15A.Check drain pump and drainpipe.Check water drainage system.Check to see if drain-up heightand horizontal pipe lengthexceed specifications.Faulty trap in water drainagesystemReplace indoor unit PCB.Is drain-upkit installed?Is drain pumpnormal?Isamountof circulated drainwater excessive afterpump stopsoperation?Doesdrain waterflow in reverse duringnonoperation?∗In FHQ-B problems can also occur inthe optional drain-up kit.(S2733)NONONONONONOYESYESYESYESYESYESCautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.
