Seivice diagnosisDomestic air conditioner11.4.4 Outdoor DC fan motor faultCheck whether Terminal on the outdoormainboard is well inserted.Is it normal?YESNO Reinsert the terminalsElectrify the machine again and turnit on in the Cool state with the remotecontroller. check whether motor canrun？YESMeasure the voltage between 3 and 6 ofthe terminal about 0-5v.Is it normal?NOthe motor of the outdoor unit is damagedand needs replacing.Measure the voltage between 1 and 3 of the terminal offan motor on the mainboard about DC310V,Measurethe voltage between 3 and 4 of the terminal aboutDC15V. Measure the voltage between 5 and 3 of theterminal about 1-6v.NOIs it normal?The mainboard of the outdoor unit isdamaged and needs replacing.NOYESYESMethod ofmalfunction detectionMalfunction detectionconditionsTroubleshootingDC fan motor is detected by checking the fan running condition and so onwhen the data of EEPROM is error or the EEPROM is damaged■DC fan motor protection dues to the DC fan motor faulty■DC fan motor protection dues to faulty PCBSupposed causes* CautionBe sure to turn off power switch before connect or disconnect connector, or parts damagemay be occurred.LED1 flash 9 timesOutdoor diplay41
