TroubleshootingSamsung Electronics 1194-3-34 3-phase Input Wiring error1. Cause of problemReplace the MAIN PBA.Connection and then restart itPower BOX Terminal : Check the phase-to-phaseconnection 380V of the R, S, T and then restart.(N-phase must be properly connected.)NoNoYesYesDid the ReactorConnection Terminal is connectedproperly?Did the MainTerminal Block and Power R, S, T, N isconnected properly?Low voltage error during this initial charge :Replace Fuse, if the rectifier diode of theinverter PBA is normal.NoNoDid the EMI PBA Fuse is short?Connection and then restart itYesYesIs EMI PBA CN21connector and Inverter PBA accuratelyconnected?Power OffOutdoor unitdisplayIndoorunitdisplayDuct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turboϧ ϧ ስ ስ ስ ϧ ስ ስ ስ م ስ ስ: ON : Flash ×: OFFJudgmentMethod. When turn on the power and check the status of the power from the inverter.If the phase does not connect the power(no phase) : E425 or E466 (E366) is displayed(Air conditioner to maintain the normal state.)However) N-phase must be properly connected.Cause ofproblem∙ Check the input wiring∙ EMI Fuse short4-3 Appropriate Measures for Different Symptom (cont.)
