Midea UR-BCD326WE-DQ User manual

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Service Manual
Applicable Models
Model No.
UR-BCD326WE-DQ
22031020000124
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)
Prepared by
R&D:Lu Tao
Reviewed by
QA:Wang Tao
SVC:Chen Lei
Approved by
R&D:Geng Xiuhua
SVC:Guang Taoshuai

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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
1.2SAFETY INSTRUCTION FOR REFRIGERANT.........................................................................................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..................................................................................................11
3.5CHANGE THE DOOR OPENING DIRECTION........................................................................................11
3.6 INSTALLATION OF HANDLE(NONE)................................................................................................13
3.7 INSTALLATION OF DOOR LOCK(NONE)...........................................................................................13
3.8ADJUSTMENT TO LEVEL THE DOOR(NONE)....................................................................................13
3.9ADJUSTMENT TO SHELVES(NONE).................................................................................................13
4.TERMS........................................................................................................................................ 13
4.1 DEFINITION OF MODEL(NONE)......................................................................................................13
4.2LOCATION OF NAMEPLATE..............................................................................................................13
5.PRODUCT SPECIFICATION .................................................................................................... 14
5.1 TYPESPECIFICATION(NONE)...........................................................................................................14
5.2 ELECTRICAL PARAMETERS.............................................................................................................14
5.3INSIDE TEMPERATURE ....................................................................................................................14
5.4DEFROSTING PARTS ........................................................................................................................14
5.5CIRCUIT DIAGRAM..........................................................................................................................15
6.INTERNAL VIEWAND 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....................................................................................................................................19
7.2CIRCULATING ROUTE OF COOLING AIR............................................................................................20
8. DISMANTLING OF PARTS...................................................................................................... 21
8.1 PARTS ON THE DOOR......................................................................................................................21
8.2PARTS INSIDE THE REFRIGERATOR ..................................................................................................21
8.3LIGHT SYSTEM ...............................................................................................................................22
8.4AIR DUCTAND FAN MOTOR.............................................................................................................22
8.5EVAPORATOR AND TEMPERATURE SENSING SYSTEM .......................................................................23
8.6COMPRESSOR CASE ........................................................................................................................25
8.7DISPLAYAND MAIN CONTROL PANEL..............................................................................................25

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8.8 BAR COUNTER(NONE)...................................................................................................................27
8.9 WATER DISPENSER(NONE)............................................................................................................. 27
8.10 ICE MAKER(NONE)......................................................................................................................27
9. FUNCTION AND OPERATION9.1 OPERATION PANEL...........................................................................27
9.2 BUTTON.........................................................................................................................................27
9.3 DISPLAY SCREEN ........................................................................................................................... 27
9.4 DISPLAY ........................................................................................................................................27
IF NO FAILURE OCCURS,THE CURRENT OPERATION GEAR WILLBE DISPLAYED.9.5 SETTING OF THE GEAR
............................................................................................................................................................28
9.6 CONTROL OF STANDBY FUNCTION .................................................................................................28
9.7 CONTROL OF ICE MAKER (NONE)...................................................................................................28
9.8 FAULT CODE AND SOLUTIONS ........................................................................................................28
9.9DEFROSTING FUNCTION ................................................................................................................. 29
9.10TEST MODE...................................................................................................................................29
9.11SELF-DIAGNOSIS...........................................................................................................................30
10.CIRCUIT DESCRIPTION10.1 POWER SUPPLY....................................................................................30
10.2DOOR TRIP TEST CIRCUIT(NONE)..................................................................................................31
10.3TEMPERATURE TEST CIRCUIT........................................................................................................ 31
10.4FAN MOTOR CIRCUIT OF THE FREEZING CHAMBER ........................................................................32
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........................................................................................... 34
11.1 NO REFRIGERATION .....................................................................................................................34
11.2 COMPRESSOR FAILURE.................................................................................................................36
11.3 DEFROSTING IS NOT WORKING.....................................................................................................37
11.4 FAN IN THE FREEZING CHAMBER IS ABNORMAL ...........................................................................38
11.5 DAMPER IS ABNORMAL(NONE)11.6 LIGHTS INSIDE THE REFRIGERATOR DON’T LIGHT UP............39
12. FIGURES AND DETAILS OF REPAIR PARTS(DOCUMENTS ARE PROVIDED
SEPARATELY)............................................................................................................................... 40
12.1 FIGURE........................................................................................................................................40
12.2 LIST OF PARTS AND COMPONENTS................................................................................................40
13APPENDIX:......................................................................................................................................40
13.1ELECTRICAL SCHEMATIC DIAGRAM .............................................................................................40
13.2REFRIGERATOR MAINTENANCE TOOLING AND EQUIPMENT AND MATERIAL.................................. 40

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1.Safety Warning Code
1.1Warning for operation safety

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1.2Safety instruction for refrigerant

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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 system with more accurate temperature control.
3）The crisper for fruits and vegetables can be adjusted in humidity.
4）Space is reserved for ice maker and customers can purchase the matching ice maker to install

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3.Installation and commissioning
3.1Handling
1) Protecttherefrigeratorinmovingit
Sameasshownasleftphoto,pleasemoveitbyhandcartwi
thcushion
2) Removeallpackingmaterialsandbottomcushion,then
moveintohouseforplacement
3) Aftermovingittoappropriatelocation,waitfor2hoursbe
forepoweron.
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.

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3.4 Leveling of the refrigerator
If the refrigerator cannot be placed steadily,
adjust the footing to level it.
3.5Change the door opening direction
1. Remove the hinge cover. Unscrew and
remove the top hinge.
2. Lift the freezer door up and away from the
appliance.
3. Remove the screws from the middle hinge.
Lift the refrigerator door up and away from the
appliance.

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4．Remove right bottom hinge and reserve the
screws. Remove screw covers at left corner and
put them into the screw holes at right corner.
Install left hinge by using those reserved
screws.
5. Remove right pin assemblies from the
bottom of the freezer and refrigerator doors.
On the opposite side, attach the replacement
pin assemblies (located in the plastic bag with
the Use and Care Manual) with a screwdriver.
Note: You must re-use the screws from the pin
assemblies that are removed in this step when
attaching the new assemblies.
6. Place the refrigerator door on the bottom
hinge. Ensure the door is aligned horizontally
and vertically. Attach middle hinge to
refrigerator door and attach bolt washer to the
back of the hinge, then fix them to middle
beam and get them fastened with a screwdriver.
7. Place the freezer door on the middle
hinge. Ensure that the door is aligned
horizontally and vertically, and that the
gasket seals on all sides before attaching
the top hinge.Attach the top hinge and replace
the hinge cover.

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3.6 Installation of handle(None)
3.7 Installation of door lock(None)
3.8 Adjustment to level the door(None)
3.9 Adjustment to shelves(None)
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-BCD326WE-DQ
/
/
Product Code
22031020000124
/
/
Name
Item
Type
Specification
Specification
Specification
Compressor
Compressor
/
EZ80E1C
/
/
Starter
PTC
QP2-4R7
/
/
Overload protector
OLP
DRB31T61A1
/
/
Winding resistance of
compressor wiring
terminal
Rmc:4.82±7%Ω
Rsc:4.96±7%Ω
Rms=Rmc+Rsc
/
/
Variable frequency
driver board
/
/
/
/
Motor
Fan motor of the
freezing chamber
BLDC
DC12V/≤4W
/
/
Ventilation door of the
refrigerating chamber
/
/
/
/
Condensation fan
/
/
/
/
Lights inside
the refrigerator
Lights inside the
freezing chamber
/
/
/
/
Lights inside the
refrigerating chamber
LED
115V/＜3.5W
/
/
Switch of the
refrigerator door
mechanicalsw
itch
sector
/
/
5.3Inside temperature
Temperature tolerance ≤ 2 oC
Compartment
The highest (oC)
Lowest (oC)
Freezing
-14
-24
Refrigerating
9
1
Variable temperature
/
/
5.4Defrosting parts
Defrosting period
Initial defrosting period
Normal defrosting period
Temperature is lower than 0oC
6~24 hours
Defrosting sensor
NTC
B3839

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Thermal fuse
Can’t be restored
77oC
Defrosting heater in freezing chamber
Steel pipe
115V/200W
5.5Circuit diagram

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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.Air duct components in freezing chamber
2.Air duct components in refrigerating
chamber
3.Glass shelve
4.Cover plate of crisper
5.Crisper for fruit and vegetable
6.Regulating foot
7.Steel wire shelf in freezing chamber
8.Bottle frame in freezing chamber
9.lampswitch
10.Zip-top can frame
11.Bottle frame in refrigerating chamber
6.2External dimension
Front view
Side view

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Down view
Open Door
Maximum open angle of door(135o)

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(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→2Anti-condensation tube→3Condenser→4Dry filter→5Capillary
tube→6Evaporator→7Regenerator→8Suction tube→1Compressor
(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)