Troubleshooting SiUS091601E85 Service Diagnosis4.12 DC Fan LockError Code E7Method of ErrorDetectionAn error is determined with the high-voltage fan motor rotation speed detected by the Hall IC.Error DecisionConditions The fan does not start in 15 ~ 30 seconds even when the fan motor is running. If the error repeats, the system is shut down. Reset condition: Continuous run for about 11 minutes without any other errorSupposedCauses Disconnection of the fan motor Foreign matter stuck in the fan Defective fan motor Defective outdoor unit PCBTroubleshootingCheck No.16Refer to P.107(R21669)CautionYESYESNOYESNONOYESNONOTurn on the power.Rotate the fan.YESCheck No. 16Check the rotation pulse input onthe outdoor unit PCB (main PCB).Turn off the power andreconnect the connector.Remove the foreignmatters.Replace the outdoor fanmotor.Replace the fuse.Replace the outdoor unitPCB (main PCB).Fan motor connectordisconnected?Foreign matters in oraround the fan?Replace the outdoor fanmotor.Fan rotatessmoothly?Pulse signal generated?Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.Is the fuse (+) for thefan motor blown?+ FU2
