Samsung AQV12UGAX - 4. Troubleshooting; 4-1 Setting Option Setup Method; 4-2 Display Error and Check Method; 4-3 Fault Diagnosis by Symptom

Operating Instructions and Installation
2 Samsung Electronics
Contents
4-3-18 AC Line Zero Cross signal out error ¥When E472 is displayed .................................... 4-22
4-3-19 Operation condition secession error¥ When E400/441 is displayed.............................. 4-23
4-3-20 Capacity miss match error ¥When E556 is displayed........................................................... 4-23
4-3-21 DC-Link voltage under/over error ¥When E466 is displayed............................................. 4-24
4-3-22 No Power (completely dead)-Initial diagnosis (Not displayed)
..................................... 4-25
4-3-23 The outdoor unit power supply error (Not displayed)............................................................ 4-26
4-3-24
When the Up/Down Louver Motor Does Not Operate. (Initial Diagnosis) (Not displayed) .... 4-27
4-3-25 When the remote control is not receiving ........................................................................ 4-28
4-4 PCB Inspection Method
.................................................................................................................. 4-29
4-4-1 Pre-inspection Notices............................................................................................................................. 4-29
4-4-2 Inspection Procedure............................................................................................................................... 4-29
4-4-3 Indoor Detailed Inspection Procedure ............................................................................................. 4-29
4-4-4 Outdoor Detailed Inspection Procedure.......................................................................................... 4-30
4-5 Main Part Inspection Method ........................................................................................................ 4-31
15. Exploded Views and Parts List ............................................................................................. 5-1
5-1 Indoor Unit ......................................................................................................................................... 5-1
5-2 Outdoor Unit
..................................................................................................................................... 5-3
5-3 Ass'y control out ................................................................................................................................................. 5-5
16. PCB Diagram and Parts List ................................................................................................... 6-1
6-1. Block Diagram .................................................................................................................................. 6-1
6-1-1. Ass'y Control In PCB ................................................................................................................................ 6-1
6-1-2. Indoor MAIN PCB...................................................................................................................................... 6-2
6-1-3. Indoor Display PCB................................................................................................................................... 6-3
6-1-4. Outdoor main PCB.................................................................................................................................... 6-3
6-1-5. Outdoor EMI PCB....................................................................................................................................... 6-4
6-2. Electrical Parts List
........................................................................................................................... 6-5
17. Wiring Diagram .............................................................................................................................. 7-1
18. Schematic Diagram ...................................................................................................................... 8-1
8-1.PCB Circuit Description .................................................................................................................... 8-1
8-1-1.Indoor Unit.................................................................................................................................................... 8-1
8-1-2.Display ............................................................................................................................................................ 8-2
19. Reference Sheet .............................................................................................................................. 9-1
9-1 Refrigerating Cycle Diagram .......................................................................................................... 9-1
9-2 Index for Model Name
..................................................................................................................... 9-2
9-3 Distribution chart of the pressure............................................................................................................... 9-3