Table Of Contents - Haier DW-86L338J Service Manual

Contents
I. Product features and model designation ..................................................................................................................... 6
1.1 Main functions and features of the product ..................................................................................................... 6
1.2 Model designation ............................................................................................................................................ 6
II. Product promotion points and selling points ............................................................................................................. 7
2.2 Safety control: .................................................................................................................................................. 7
2.3 Refrigerating system: ....................................................................................................................................... 7
2.4 Humanization design: ...................................................................................................................................... 7
2.5 VIP ................................................................................................................................................................... 7
2.6 Temperature monitoring function .................................................................................................................... 8
2.7 Noise ................................................................................................................................................................ 8
III. Product appearance and structure characteristics ..................................................................................................... 8
3.1 New energy-saving structure series: DW-86L578J/626/728J/828J ................................................................. 8
3.2 Narrow series ................................................................................................................................................... 8
3.3 Double-door series: DW-86L490J ................................................................................................................... 8
3.4 Horizontal freezer series: DW-86W100J Horizontal freezer series: DW-86W420J........................................ 9
IV. Product component structure name ........................................................................................................................ 10
4.1 Display structure of display board ................................................................................................................. 10
4.2 Freezer structure ............................................................................................................................................ 10
4.3 Structure of electric cabinet ........................................................................................................................... 15
4.4 System structure ............................................................................................................................................. 19
V. Product instructions and product improvement ....................................................................................................... 20
5.1 Unlocking: ..................................................................................................................................................... 20
5.2 Temperature setting: ....................................................................................................................................... 20
5.3 Precautions ..................................................................................................................................................... 20
5.4 Fault code query ............................................................................................................................................. 21
5.5 Probe resistance changes with temperature (probe type: NTC, which is mainly for ambient temperature
sensor, condensation temperature sensor, and heat exchanger sensor) ................................................................ 23
IV. Main technical parameters of the product .............................................................................................................. 24
6.1 List of technical parameters ........................................................................................................................... 24
6.2 Product nameplate .......................................................................................................................................... 27
VII. Case preventive measures, product use and daily maintenance knowledge ......................................................... 28
7.1 Principle of ultra-low temperature refrigeration: ........................................................................................... 28
7.2 Method of use of the ULT Freezer ................................................................................................................. 28
7.3 Working principle of pressure switch ............................................................................................................ 29
7.4 Characteristics of refrigerant .......................................................................................................................... 29
7.5 Refrigerant charging procedures: ................................................................................................................... 29
VIII. System schematic diagram and wiring diagram .................................................................................................. 32
IX. Specific control, working principle and parameters .............................................................................................. 34
9.1 The temperature control system controlled by computer board controls the start and stop of the compressor
............................................................................................................................................................................. 34
9.2 Display and alarm .......................................................................................................................................... 35
9.3 Special function setting: ................................................................................................................................. 36
9.4 Battery control requirements: ........................................................................................................................ 37
ULT Energy-saving Series After-sales Service Manual
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