Midea UR-BD390WE-ST User manual

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Service Manual
Applicable Models
Model No.
UR-BD390WE-ST
22031010001341
CE-BD390WE-ST
22031010001361
UR-BD390WE-ST
92031010Z00044
UR-BD390WE-ST
92031010Z00046
(The picture is only for reference, and specific appearance and configuration are subject to the real product)
Prepared by
R&D:Zha Caicun
Reviewed by
QA:Li Jiangli
SVC:Zhang kun
Approved by
R&D:Geng Xiuhua
SVC:GuangTaoshuai

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Important Safety Notice
The Maintenance Manual is only for the use of maintenance personnel with certain experience and background
in electrical, electronic and mechanical field.
Any attempt to repair main devices may lead to personal injury and property loss.
Manufacturers or distributors are not responsible for the content of the Manual and interpretation thereof.
Midea Refrigerators
Technical Maintenance Manual
Copyright @2016
All rights reserved. Replication of all or part of the Manual in any forms shall not be allowed without written
approval by the Overseas Sales Corporation of Midea Refrigerators.

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Contents
1.SAFETY WARNING CODE ....................................................................................................................... 5
1.1WARNING FOR OPERATION SAFETY..................................................................................................................5
1.2 冷媒安全须知 ...............................................................................................................................................8
2.DESCRIPTION FOR PRODUCT FEATURES.......................................................................................... 9
3.INSTALLATION AND COMMISSIONING .............................................................................................10
3.1HANDLING.....................................................................................................................................................10
3.2DISASSEMBLY (NONE)...................................................................................................................................10
3.3 INSTALLATION LOCATION..............................................................................................................................10
3.4 LEVELING OF THE REFRIGERATOR .................................................................................................................10
3.5CHANGE THE DOOR OPENING DIRECTION(NONE)...........................................................................................11
3.6 INSTALLATION OF HANDLE............................................................................................................................11
3.7 INSTALLATION OF DOOR LOCK(NONE)..........................................................................................................11
3.8 ADJUSTMENT TO LEVEL THE DOOR(NONE)....................................................................................................11
3.9 ADJUSTMENT TO SHELVES(NONE).................................................................................................................11
4.TERMS .......................................................................................................................................................12
4.1 DEFINITION OF MODEL(NONE)......................................................................................................................12
4.2LOCATION OF NAMEPLATE .............................................................................................................................12
5.PRODUCT SPECIFICATION ...................................................................................................................13
5.1 TYPESPECIFICATION(NONE)..........................................................................................................................13
5.2 ELECTRICAL PARAMETERS ............................................................................................................................13
5.3INSIDE TEMPERATURE....................................................................................................................................13
5.4DEFROSTING PARTS........................................................................................................................................13
5.5CIRCUIT DIAGRAM.........................................................................................................................................14
6.INTERNAL VIEW AND DIMENSION .....................................................................................................16
6.1MAIN PARTS AND THEIR NAMES .....................................................................................................................16
6.2EXTERNAL DIMENSION ..................................................................................................................................16
7.REFRIGERATING PIPING SYSTEM AND CIRCULATING ROUTE OF COOLING AIR7.1 REFRIGERATING PIPING SYSTEM
...........................................................................................................................................................................18
7.2CIRCULATING ROUTE OF COOLING AIR ...........................................................................................................19
8. DISMANTLING OF PARTS .....................................................................................................................20
8.1 PARTS ON THE DOOR .....................................................................................................................................20
8.2PARTS INSIDE THE REFRIGERATOR .................................................................................................................20
8.3LIGHT SYSTEM...............................................................................................................................................20
8.4AIR DUCT AND FAN MOTOR ............................................................................................................................21
8.5EVAPORATOR AND TEMPERATURE SENSING SYSTEM.......................................................................................22
8.6COMPRESSOR CASE........................................................................................................................................23
8.7DISPLAY AND MAIN CONTROL PANEL .............................................................................................................25

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8.8 BAR COUNTER(NONE)..................................................................................................................................26
8.9 WATER DISPENSER(NONE)............................................................................................................................26
8.10 ICE MAKER(NONE)......................................................................................................................................26
9. FUNCTION AND OPERATION9.1 OPERATION PANEL ..........................................................................................27
9.2BUTTON.........................................................................................................................................................27
9.3 LEDINDICATOR ............................................................................................................................................27
9.4FUNTION........................................................................................................................................................27
9.5CONTROL OF STANDBY FUNCTION(NONE)......................................................................................................29
9.6 CONTROL OF ICE MAKER(NONE)...................................................................................................................29
9.7FAULT CODE AND SOLUTIONS ........................................................................................................................29
9.8DEFROSTING FUNCTION.................................................................................................................................29
9.9TEST MODE(NONE)........................................................................................................................................29
9.10SELF-DIAGNOSIS..........................................................................................................................................29
10.CIRCUIT DESCRIPTION10.1 POWER SUPPLY ...................................................................................................30
10.2DOOR TRIP TEST CIRCUIT .............................................................................................................................30
10.3TEMPERATURE TEST CIRCUIT .......................................................................................................................31
10.4FAN MOTOR CIRCUIT OF THE FREEZING CHAMBER .......................................................................................31
10.5REFRIGERATOR FAN MOTOR CIRCUIT (NONE)...............................................................................................32
10.6CONDENSING FAN MOTOR CIRCUIT (NONE)..................................................................................................32
10.7DAMPER MOTOR CIRCUIT (NONE)................................................................................................................32
10.8RESISTANCE VALUE OF THE SENSOR (R/T) ...................................................................................................32
11.TROUBLESHOOTING METHOD .........................................................................................................33
11.1 NO REFRIGERATION.....................................................................................................................................33
11.2 COMPRESSOR FAILURE ................................................................................................................................34
11.3 DEFROSTING IS NOT WORKING ....................................................................................................................35
11.4 FAN IN THE FREEZING CHAMBER IS ABNORMAL...........................................................................................36
11.5 DAMPER IS ABNORMAL(NONE)11.6 LIGHTS INSIDE THE REFRIGERATOR DON’T LIGHT UP ...........................37
12. FIGURES AND DETAILS OF REPAIR PARTS(DOCUMENTS ARE PROVIDED SEPARATELY) ..38
12.1 FIGURE .......................................................................................................................................................38
12.2 LIST OF PARTS AND COMPONENTS ...............................................................................................................38
13APPENDIX:......................................................................................................................................................38
13.1ELECTRICAL SCHEMATIC DIAGRAM.............................................................................................................38
13.2REFRIGERATOR MAINTENANCE TOOLING AND EQUIPMENT AND MATERIAL .................................................38

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1.Safety Warning Code
1.1Warning for operation safety

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1.2 冷媒安全须知

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2.Description for product features
This product is provided with following features:
(The picture is only for reference, and specific appearance and configuration are subject to the real product)
1）Full air-cooling and frost-free design
2）Electronic temperature control, more accurate temperature control.
3）BC/BD can switch, meet the different needs of customers.

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3.Installation and commissioning
3.1Handling
1) Protecttherefrigeratorinmovingit
Sameasshownasleftphoto,pleasemoveitbyhandcartwi
thcushion
2) Removeallpackingmaterialsandbottomcushion,then
moveintohouseforplacement
3) 2Aftermovingittoappropriatelocation,waitfor2hours
beforepoweron.
3.2Disassembly (None)
The refrigerator door needs to be dismantled if it cannot enter the room in the whole.
3.3 Installation location
Location that is easy for ventilation shall be
chosen to facilitate heat dissipation, enhance
its performance and reduce the energy
consumption.
3.4 Leveling of the refrigerator
If the refrigerator cannot be placed steadily,
adjust the footing to level it.

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3.5Change the door opening direction(None)
3.6 Installation of handle
1.Take out ①,use a cross screwdriver to drive① into the screw hole② on the door body and tighten it.
2.Align the screw hole on the handle with the tightened ① to fix the handle;
3.Tighten ③ on the handle side;
4.Put ④ onto the handle side hole ③ to complete handle installation.
3.7 Installation of door lock(None)
3.8 Adjustment to level the door(None)
3.9 Adjustment to shelves(None)

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4.Terms
4.1 Definition of model(None)
4.2Location of nameplate
(The picture is only for reference, and specific appearance and configuration are subject to the real product)
Label

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5.Product specification
5.1 typespecification(None)
5.2 Electrical parameters
Product Name
UR-BD390WE-ST
CE-BD390WE-ST
/
Product Code
22031010001341
22031010001361
/
Name
Item
Type
Specification
Specification
Specification
Compressor
Compressor
/
EZ80H1A-
USCL
LJ118DY1
/
Starter
PTC
QP2-4R7
LPC319D-
01/QPE2-
A15MD3
/
Overload protector
OLP
DRB31T61A1
BT69-
120/DRB246N61
A2/3TM213NF1
/
Winding resistance of
compressor wiring
terminal
Rmc：4.6～4.74Ω
Rsc：6.16～6.3Ω
Rms=Rmc+Rsc
Rmc：8.67～11.73Ω
Rsc：16.15～21.85Ω
Rms=Rmc+Rsc
/
Variable frequency
driver board
/
/
/
/
Motor
Fan motor of the
freezing chamber
DC
DC12V
DC12V
/
Ventilation door of the
refrigerating chamber
/
/
/
/
Condensation fan
/
/
/
/
Lights inside
the refrigerator
Lights inside the
freezing chamber
LED
DC12V
DC12V
/
Lights inside the
refrigerating chamber
/
/
/
/
Switch of the
refrigerator door
mechanicalsw
itch
Cylindrical
switch
Cylindrical switch
/
5.3Inside temperature
Temperature tolerance ≤ 2 oC
Compartment
The highest (oC)
Lowest (oC)
Freezing
-14
-21
Refrigerating
/
/
Variable temperature
/
/
5.4Defrosting parts
Defrosting period
Initial defrosting period
Normal defrosting period
/
/
Defrosting sensor
NTC
B3839
Thermal fuse
Can’t be restored
77 oC
Defrosting heater in freezing chamber
Steel pipe
115V/200W
230V/

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5.5Circuit diagram
UR-BD390WE-ST_22031010001341\ 92031010Z00046\92031010Z00044
CE-BD390WE-ST_22031010001361

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6.Internal view and dimension
6.1Main parts and their names
(The picture is only for reference, and specific appearance and configuration are subject to the real product)
1. Glass shelf
2.Upper air duct cover
3. Glass shelf
4. Glass shelf
5.Bottom air duct cover
6. Glass shelf
7.Bottom drawer of freezer chamber
8. Door switch
9. Door tray
10.Door tray
11.Door tray
12.Door tray
6.2External dimension
Front view
Side view

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Down view
Open Door
Maximum open angle of door(140°)
(The picture is only for reference, and specific appearance and configuration are subject to the real product)

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7.Refrigerating piping system and circulating route of cooling air7.1 Refrigerating piping
system
1Compressor→2Exhaust transition pipe→3Left condenser→4Anti-condensationg tube→5Back
condenser→6Right condenser→7Dry filter→8Capillary tube→9Evaporator→10Suction pipe→11Return
transition pipe→2Compressor
(The picture is only for reference, and specific appearance and configuration are subject to the real product)

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7.2Circulating route of cooling air
(The picture is only for reference, and specific appearance and configuration are subject to the real product)

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8. Dismantling of parts
8.1 Parts on the door
Door seal
Door seal is installed into door liner groove.
1）Open the refrigerator door;
2）Take the door seal ①out of door liner;
Door tray
Lift up the bottle frame and take it out from the door
liner of the refrigerator.
rollover beam
None
8.2Parts inside the refrigerator
Refrigerator Fruit box cover
None
Shelves
1）Pull out the partition plate completely.
2）Lift it up and take it out from the refrigerator.
Ice tray
None
Refrigerator tray
None
Drawer
None
8.3Light system
Light
Light of the freezer chamber is located upper chamber
1) use slotted screwdriver to insert into the
gap,dismantle the lamp
2) loosen the plasic clip, dismantle the lamp PCB
Light switch