Troubleshooting92 Samsung Electronics4-5-12 Outdoor unit is not powered on – Initial diagnosis1. Check items1) Is the power supply voltage 380V?2) Is the AC power connected correctly?3) Are the LEDs in the main PCB and inverter PCB of the outdoor unit ON?4) Is the input power voltage of the indoor unit 220V?5) Is the wired remote controller connected correctly?2. Check procedureYesTurn o he main power switch(circuit break of power outlet) and turn onagain after 30 seconds.Check the input powerNoIs the outdoor unit powersupply (N-R, N-S, N-T) 220Vac?YesCheck connection of the outdoor unitterminal blockNoIs the outdoor unit powervoltage (L-N) 220Vac?YesCheck the connection wires andconnectors of the indoor and outdoor unitsNoIs the indoor unit power supplyvoltage (L-N) 220Vac?YesExchange the wired remote controllerNoDoes the air conditioneroperate when pressing ON/OFF button of thewired remote controller?Yesthe option DIP switchesNoAre the option DIP switchesinside the wired remote controller co uredcorrectly?NoCheck the system dependingon the error displayYesIs there an errormessage displayed on the wired remotecontroller display?Check the target temperature4-6-12
