Haier Dw-86l338 User manual

Servic

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Ultra‐l

DW-86L

DW-86

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88•DW-86

486•DW-8

DW-86

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L338•DW-

L628•DW-

1006•DW

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6L388•DW

6L728•D

86W420

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86L388A

-86L828

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FILENo

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:HMRSM

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2/88

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Effective models

This service manual is effective for following models

Model name Product code Voltage(V) Frequency(Hz) Plug-type

DW-86L288 BE06S8E1T 220 50 All

DW-86L338 BE0FU3E1T 220 50 All

DW-86L388 BE06RCE1T 220 50 All

DW-86L388A BE0FV3E1T 220 50 All

DW-86L486 BE06RJE1T 220 50 All

DW-86L490 BE06QGE1T 220 50 All

DW-86L626 BE03D2E1T 220 50 All

DW-86L628 BE06QLE1T 220 50 All

DW-86L728 BE0EZLE1T 220 50 All

DW-86L828 BE0F09E1T 220 50 All

DW-86W100 BE0385E1T 220 50 All

DW-86W420 BE0381E1T 220 50 All



3/88



Content

●● Designation ...........................................................................................................................................5

●● Introduction to product features ............................................................................................................6

●●Product appearance...............................................................................................................................7

●●Parts layout ..........................................................................................................................................14

1. Display structure ...........................................................................................................................14

2. Box structure .................................................................................................................................14

3. Electronic structure .......................................................................................................................17

4. System architecture.......................................................................................................................20

●●Cooling unit parts .................................................................................................................................21

●●Refrigeration circuits ............................................................................................................................22

●● Circuit diagram....................................................................................................................................23

●●Connections on Main PCB ...................................................................................................................25

●●Specifications of sensor .......................................................................................................................26

1. The value of the probe resistance varies with temperature (probe type: NTC) .............................26

2. The value of the probe resistance varies with temperature (probe type: PT100) ..........................27

●●Detailed technical data of the product..................................................................................................28

●●product nameplate ...............................................................................................................................29

●●Transportation and Installation .............................................................................................................30

1. Transportation of the product and removal of package .................................................................30

2. The product enters the placement room........................................................................................

3. Product installation and matters needing attention........................................................................32

●●Specifications of LCD panel .................................................................................................................35

1. Unlock ...........................................................................................................................................35

2. Temperature setting.......................................................................................................................35

3. High Temperature Alarm................................................................................................................36

4. Low Temperature Alarm ................................................................................................................36

●●Indicating of working status of display panel........................................................................................37

●●Indication of alarm status .....................................................................................................................38

●●Setting of special functions ..................................................................................................................40

1. Setting of password value .............................................................................................................40

2. Setting of start delay......................................................................................................................40

3. Calibration function .......................................................................................................................40

4. Control of condensate fan .............................................................................................................40

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5.Requirements of battery control .....................................................................................................41

6. Meanings of fault codes ................................................................................................................41

7 Precautions ....................................................................................................................................42

●●Fault code ............................................................................................................................................43

The main fault codes.........................................................................................................................43

●●Product use and maintenance .............................................................................................................46

1. Principle of work:...........................................................................................................................46

2. Ultra-low temperature cabinet use ................................................................................................46

3. Pressure switch and infusion of freezing medium .........................................................................47

4. Fan parameters.............................................................................................................................50

●●Gas collection and charge....................................................................................................................51

1. Diagram of refrigerating machine ..................................................................................................51

2. Compressor parameters................................................................................................................51

3. The characteristics of the refrigerant .............................................................................................52

4. Refrigerant perfusion process .......................................................................................................52

5. Infusion flow of freezing medium...................................................................................................58

●●Refrigerant perfusion Details................................................................................................................60

●●Troubleshooting ...................................................................................................................................61

●●How to deal with High temperature alarm ............................................................................................65

●●How to deal with Low temperature alarm .............................................................................................66

●●Points needing attention during normal use of the product ..................................................................

1. Points needing attention during normal use-proper use................................................................67

2. Points needing attention during normal use-safety requirement ...................................................69

3. Points needing attention during normal use-disposal of special circumstances ............................73

●●Other maintenance and repair .............................................................................................................75

1. Clean storage box .........................................................................................................................75

2. Clean condenser filter screen........................................................................................................75

3. Clean filter screen with water. .......................................................................................................75

4. Defrost inner wall ..........................................................................................................................76

5. Battery maintenance .....................................................................................................................76

●●FAQ......................................................................................................................................................78

1. Common Faults Analysis and Maintenance Measures..................................................................78

2.Alarm of battery low electric quantity:.............................................................................................79

3.Alarm of dirty condenser: ...............................................................................................................80

●●Used Spare Parts Photo Gallery ..........................................................................................................81

●●Testing Date .........................................................................................................................................86