SERVICE MANUAL
Model: HRF-521DS6
2
Issue 2016-09-07
REF. Ref 1609S025V0.
Contents
Chapter 1 General Information ............................................................................................................................... 3
1-1. General Guidelines .......................................................................................................................................... 3
1-2. Insurance test ................................................................................................................................................... 3
1-3. How to read this Service Manual .................................................................................................................... 4
Chapter 2 Product Feature ...................................................................................................................................... 5
2-1. Specifications .................................................................................................................................................. 5
2-2. Main Functions ................................................................................................................................................ 5
2-3. External views ................................................................................................................................................. 6
Chapter3 Disassembly and Installation ................................................................................................................... 7
3-1. Display panel Disassembly .............................................................................................................................. 7
3-2. Main Control Board and Power Cable Disassembly ....................................................................................... 7
3-3 .Removing Shelf to Clean ................................................................................................................................. 8
3-4.Adjust Bottle and clean .................................................................................................................................... 8
3-5. Freezer air duct cover assembly and disassembly ........................................................................................... 8
3-5. Refrigerator air duct cover assembly and disassembly .................................................................................... 9
Chapter 4 Control and display system .................................................................................................................. 10
4-1.Control panel .................................................................................................................................................. 10
4-2.Lock/Unlock setting ....................................................................................................................................... 10
4-3.Intelligence/Holiday function settings ............................................................................................................ 10
4-4.Quick-cooling function setting ....................................................................................................................... 11
4-5.Quick-freezing function setting ...................................................................................................................... 11
4-6.Temperature setting and adjustment ............................................................................................................... 11
4-7.Door alarm ...................................................................................................................................................... 12
4-8.Power-off memory .......................................................................................................................................... 12
Chapter 5 Control principal and related test functions ......................................................................................... 13
5-1.Refrigerator`s temperature control introduction ............................................................................................. 13
5-2. Defrost control ............................................................................................................................................... 13
5-3. Sensor`s position and control principle ......................................................................................................... 14
5-4. Operating description of combination key .................................................................................................... 15
Chapter 6 System flow principle........................................................................................................................... 17
6-1.System flow scenograph ................................................................................................................................. 17
6-2.System flow chart ........................................................................................................................................... 17
Chapter 7 Circuit diagram ..................................................................................................................................... 18
7-1. Main control PCB diagram ............................................................................................................................ 18
7-2. Brief principle diagram .................................................................................................................................. 19
Chapter 8 Trouble shooting and fault detecting .................................................................................................... 20
8-1. Frequent problem ........................................................................................................................................... 20
8-2. Fault diagnosis and display method ............................................................................................................... 22
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