Section 02 Samsung ElectronicsContents4-3-10 Communication error between outdoor unit INV׳ MAIN MICOM (1 min.)(Error Code: E203).................................................................................... 4-304-3-11 Outdoor sensor error(Error Code : E221, E231, E251, E320) ................................................ 4-314-3-12 Reverse phase / Loss phase detection (3-phase outdoor unit) (Error Code : E425 ).. 4-324-3-13 Compressor down due to freezing control (Error Code : E403)......................................... 4-334-3-14 Outdoor unit Fan error (Error Code : E458, E475) .................................................................... 4-344-3-15 Compressor starting error / rotation error (Error Code : E461, E467) .............................. 4-354-3-16 Full current error / PFC over-current error (Error Code : E462, E484)............................... 4-374-3-17 IPM IPM (Over Current) error (Error Code : E464)..................................................................... 4-384-3-18 DC LINK over-current / low-voltage error (Error Code : E466)H/W DC_Link Over Voltage Error (Error Code : E483)AC Input Voltage Sensor Error (Error Code : E488 .................................................................... 4-414-3-19 Gas leakage error(Error Code : E554) ............................................................................................ 4-424-3-20 Pipe blockage error(Error Code : E422) ........................................................................................ 4-444-3-21 Smart install mode was not carried out (Error Code : E508 )............................................... 4-454-3-22 Others ........................................................................................................................................................ 4-475. PCB Diagram and Parts List.............................................................................. 5-15-1 Indoor Unit ............................................................................................................................................................. 5-15-1-1 MAIN PCB.................................................................................................................................................... 5-15-1-2 Panel PCB.................................................................................................................................................... 5-35-2 Outdoor Unit ......................................................................................................................................................... 5-45-2-1 MAIN PCB.................................................................................................................................................... 5-45-2-2 INVERTER PCB ........................................................................................................................................... 5-55-2-3 EMI PCB........................................................................................................................................................ 5-85-2-4 Heater PCB ................................................................................................................................................. 5-106. Wiring Diagram ................................................................................................. 6-16-1 Indoor Unit ............................................................................................................................................................. 6-16-2 Outdoor Unit ......................................................................................................................................................... 6-27. Reference Sheet ................................................................................................ 7-17-1 Index for Model Name ...................................................................................................................................... 7-17-1-1 Indoor Unit ................................................................................................................................................. 7-17-1-2 Outdoor Unit ............................................................................................................................................. 7-27-1-3 Panel ............................................................................................................................................................. 7-37-2 Refrigerating Cycle Diagram .......................................................................................................................... 7-4