Samsung AM072/096/120/144FXVAFH, Service Manual

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Section 0
4 Samsung Electronics
Contents
4-4-14 MCU branch part setup error – Connect an Indoor unit to a branch part not being used ...... 4-45
4-4-15 MCU branch part setup error – Connect more Indoor units than what is actually set up in MCU ... 4-46
4-4-16 MCU/MCU subcooler entrance/exit sensor error (Open/Short) ........................................... 4-47
4-4-17 Outdoor Temperature Sensor Error .................................................................................................. 4-48
4-4-18 Cond Out Temperature Sensor Error (Open/Short) ................................................................... 4-49
4-4-19 Outdoor Cond Out sensor breakaway error ................................................................................. 4-51
4-4-20 Compressor Discharge or Top 1/2 Temperature sensor error ............................................... 4-53
4-4-21 Compressor Discharge or Top temperature sensor breakaway error ................................ 4-55
4-4-22 E269 : Suction Temperature sensor breakaway error ............................................................... 4-57
4-4-23 High Pressure sensor error (Open/Short) ....................................................................................... 4-59
4-4-24 Low Pressure sensor error (Open/Short) ........................................................................................ 4-61
4-4-25 Suction Temperature sensor error (Open/Short) ........................................................................ 4-63
4-4-26 Liquid Pipe Temperature sensor error (Open/Short) ................................................................. 4-65
4-4-27 EVI In Temperature sensor error (Open/Short) ............................................................................ 4-67
4-3-28 EVI Out Temperature sensor error (Open/Short) ........................................................................ 4-68
4-4-29 Suction-2 Temperature Sensor Error (OPEN/SHORT) ................................................................ 4-69
4-4-30 Measures of other outdoor unit error ............................................................................................. 4-70
4-4-31 E407 : Comp. Down due to High Pressure Protection Control ............................................. 4-72
4-4-32 E410 : Comp. Down due to Low Pressure Protection Control ............................................... 4-75
4-4-33 E416 : Suspension of starting due to Compressor discharge temperature sensor
/ Top temperature sensor ........................................................................................................ 4-77
4-3-34 3-phase Input Wiring error ................................................................................................................... 4-79
4-3-35 E428 : Suspension of starting by abnormal compression ratio ............................................ 4-80
4-3-36 EVI EEV Open error .................................................................................................................................. 4-81
4-3-37 Refrigerant leakage error ...................................................................................................................... 4-83
4-3-38 Prevention of heating / cooling operation due to outdoor temperature ........................ 4-85
4-3-39 Prevention of heating refrigerant charge due to outdoor temperature .......................... 4-86
4-3-40 CH wire breaking error........................................................................................................................... 4-87
4-3-41 Fan starting error ...................................................................................................................................... 4-90
4-3-42 Fan lock error ............................................................................................................................................. 4-91
4-3-43 Momentary Blackout error ......................................................................................................................... 4-92
4-3-44 Outdoor Fan Motor overheating ....................................................................................................... 4-93
4-3-45 Fan IPM Overheat error .......................................................................................................................... 4-94
4-3-46 Compressor starting error .................................................................................................................... 4-95
4-3-47 COMP Overcurrent error ....................................................................................................................... 4-98
4-3-48 Overvoltage / Low voltage error .....................................................................................................4-103
4-3-49 DC Link voltage sensor error .............................................................................................................4-105
4-3-50 Fan Motor Overcurrent error .............................................................................................................4-107
4-3-51 Input / Output Current sensor error ...............................................................................................4-109
4-3-52 Outdoor Fan PCB Overvoltage / Low voltage error .................................................................4-111
4-3-53 Hall IC(Fan) error .....................................................................................................................................4-112
4-3-54 Inverter Overheat error ........................................................................................................................4-113
4-3-55 Option setting error of outdoor unit .............................................................................................4-114
4-3-56 Model mismatching of Indoor unit. ...............................................................................................4-116
4-3-57 Error due to using single type outdoor unit in a module installation .............................4-117
5. PCB Diagram and Parts List ............................................................................... 5-1
5-1 ASS'Y PCB MAIN ...........................................................................................................................................................5-1
5-2 ASS'Y PCB MAIN-HUB ................................................................................................................................................5-6
5-3 ASS’Y PCB INVERTER ............................................................................................................................................... 5-10
5-4 OUT DOOR UNIT PCB ............................................................................................................................................. 5-14
5-5 ASS’Y PCB FAN ........................................................................................................................................................... 5-16
5-6 ASS’Y PCB EMI .......................................................................................................................................................... 5-20
5-7 OUT DOOR UNIT PCB ............................................................................................................................................ 5-21
5-8 SUB-COMM ................................................................................................................................................................ 5-22
5-9 ASSY PCB WATER-HUB ............................................................................................................................................ 5-23