Troubleshooting SiMT041311E163 Service Diagnosis2.30 Humidifier Fan Motor System Abnormality / Fan LockError Code P9Method of ErrorDetectionDuring humidifier fan motor running, fan motor system abnormality is identified based on the fanmotor rotation speed detected by the Hall IC.Error DecisionConditionsThe fan motor rotation speed does not reach 100 rpm within 12 seconds after starting.SupposedCauses Defective humidifier fan motor Breakage of relay harness or loose connector Detection fault of fan motor rotation speed due to defective outdoor unit PCBTroubleshootingCheck No.16Refer to P.187Note: FU2 is commonly used for the outdoor fan motor, humidifier fan motor, and the four way valvecoil.(R19688)CautionBe sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.YESNOYESYESYESIs the connector for thehumidifier fan motor S72connected?Remove the humidifying fanassembly and rotate the fan byhand.Check No.16Check for the rotation pulseinput of outdoor unit PCB.NONONODoes the fan rotate?Stop operation.Is the fuse forpower supply of fan (FU2)blown?Does the fan rotatesmoothly?After reassembling, start operation.Start humidifying operation.Reconnect the connectorproperly.Replace the humidifying fanassembly.Replace the fuse (FU2).Check the following partsand replace the defectiveone(s).∗Outdoor fan motor∗Humidifier fan motorReplace the outdoor unitPCB.
