SiENBE05-722_A TroubleshootingService Diagnosis 773.9 OL Activation (Compressor Overload)Remote ControlDisplayE5Method ofMalfunctionDetectionA compressor overload is detected through compressor OL.MalfunctionDecisionConditions If the error repeats twice, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error∗ The operating temperature condition is not specified.SupposedCauses Defective discharge pipe thermistor Defective electronic expansion valve or coil Defective four way valve or coil Defective outdoor unit PCB Refrigerant shortage Water mixed in refrigerant Defective stop valveTroubleshootingCheck No.04Refer to P.103Check No.05Refer to P.104Check No.06Refer to P.105Check No.11Refer to P.107(R11999)CautionYESNG∗ Discharge pipe thermistorNOOKOKNGNGOKNGOK∗ Refrigerant shortage∗ Water mixed∗ Stop valveInsert the thermistor inposition.Replace the discharge pipethermistor.Replace the electronicexpansion valve or the coil.Refer to the refrigerant linecheck procedure.Replace the outdoor unitPCB.Replace the four way valveor the coil.Replace the outdoor unitPCB.Discharge pipethermistor disconnected?Check No. 06Check the thermistors.Check No. 05Check the four way valve.Check No. 11Check the refrigerant line.Check No. 04Check the electronicexpansion valve.Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.
