Midea UR-BC123CM-ST User manual

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Service Manual
Applicable models
Model Code
UR-BC123CM-ST
22031010001241
UR-BC123CM-ST
22031010000481
UR-BC123CM-ST
92031010Z00017
UR-BC123CM-ST
92031010Z00019
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)
Prepared by
R&D:Zhang Suqin
Reviewed by
QA:WangTao
SVC:ChenLei
Approved by
R&D:Tang Tao
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
1.2SAFETY 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..................................................................................................10
3.5CHANGE THE DOOR OPENING DIRECTION........................................................................................11
3.6 INSTALLATION OF HANDLE ............................................................................................................12
3.7 INSTALLATION OF DOOR LOCK(NONE)...........................................................................................12
3.8ADJUSTMENT TO LEVEL THE DOOR(NONE)....................................................................................12
3.9ADJUSTMENT TO SHELVES(NONE).................................................................................................12
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
5.3REFRIGERATING 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 AIR .. 18
7.1 REFRIGERATING PIPING SYSTEM ....................................................................................................18
7.2CIRCULATING ROUTE OF COOLING AIR(NONE)................................................................................18
8. 8. DISMANTLING OF PARTS .................................................................................................. 19
8.1 PARTS ON THE DOOR......................................................................................................................19
8.2 PARTS INSIDE THE REFRIGERATOR..................................................................................................19
8.3 LIGHT SYSTEM...............................................................................................................................20
8.4AIR DUCT COMPONENTS REFRIGERATINGCHAMBER........................................................................21
8.5AIR DUCT COMPONENTS IN FREEZING CHAMBER AND FAN MOTOR..................................................21

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8.6EVAPORATOR AND TEMPERATURE SENSING SYSTEM .......................................................................21
8.6COMPRESSOR CASE ........................................................................................................................22
8.7DISPLAYAND MAIN CONTROLPANEL(NONE)..................................................................................23
8.8 BAR COUNTER(NONE)...................................................................................................................23
8.9 WATER DISPENSER(NONE).............................................................................................................24
8.10 ICE MAKER(NONE)......................................................................................................................24
9. FUNCTION AND OPERATION................................................................................................ 25
9.1OPERATION PANEL..........................................................................................................................25
9.2TEMPERATURE CONTROL................................................................................................................25
9.3GIVE AN ALARM(NONE).................................................................................................................25
9.4FAILURE CODE AND SOLUTIONS(NONE)..........................................................................................25
9.5DEFROST FUNCTION .......................................................................................................................25
9.6COMPRESSOR FAN CONTROL(NONE)..............................................................................................25
9.10TEST MODE (NONE)......................................................................................................................25
9.11SELF-DIAGNOSIS (NONE)..............................................................................................................25
10.CIRCUIT DESCRIPTION........................................................................................................ 26
10.1 POWER SUPPLY(NONE)................................................................................................................26
10.2 TEST CIRCUIT FOR DOOR SWITCH(NONE).....................................................................................26
10.3 TEMPERATURE TEST CIRCUIT(NONE)...........................................................................................26
10.4FREEZER CHAMBER FAN MOTOR CIRCUIT (NONE).........................................................................26
10.5REFRIGERATING CHAMBER FAN MOTOR CIRCUIT (NONE)..............................................................26
10.6CONDENSATION FAN CIRCUIT (NONE)..........................................................................................26
10.5 FAN MOTOR CIRCUIT OF THE VENTILATION DOOR(NONE)............................................................26
10.6RESISTANCE VALUE OF THE SENSOR (R/T)....................................................................................26
11.TROUBLESHOOTING METHOD........................................................................................... 27
11.1 NOT COOLING..............................................................................................................................27
11.2 NOT WORKING OF COMPRESSOR ..................................................................................................28
11.3 -THERMOSTAT MALFUNCTION-UNDERCOOLING...........................................................................29
11.4 LIGHT IS NOT ON..........................................................................................................................29
11.5 NOISE ..........................................................................................................................................30
12. FIGURES AND DETAILS OF REPAIR
PARTS(DOCUMENTSAREPROVIDEDSEPARATELY) ............................................................ 31
12.1FIGURES.......................................................................................................................................31
12.2LIST OF PARTS AND COMPONENTS.................................................................................................31
13APPENDIX:................................................................................................................................ 32
13.1ELECTRICAL SCHEMATIC DIAGRAM(NONE).................................................................................32
13.2REFRIGERATOR MAINTENANCE TOOLING AND EQUIPMENT AND MATERIAL .................................32

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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）Mechanical temperature control
2）Freezer room around the tube evaporator, cooling evenly and quickly;
3）Zip-top can steel bar
5）Built-in incandescent lamp, easy to take items;
6）Large fruit and vegetable box design, increase storage space
7）Change the door opening direction

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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.
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
1) Remove the hinge cover.
Unscrew screws.
Remove the upper hinge, Insert pins .
2) Remove the bottom door.
Unscrew screws and levelling feet.
Remove the lower hinge adjust feet
assembly.
3) Fix the levelling feet, lower hinge adjust feet
assembly and screws in the opposite side.
4) Place the up door.
Place and fix the the upper hinge. Fix the
hinge cover, Insert pins.
5) remove the screw hole cap, and use
screwdriver to remove the screws, then
dismantle the handle. Move the screw hole
cover on the other side of door onto this
screw hole
6) put the handle on proper position, aligning
with the screw hole, then fix it by screws, at
last to assemble the screw hole cap

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3.6 Installation of handle
1. dismantle the screw hole cover of door by
blade or hard sheet
2. align the hole of handle with the hole on the
door
3. use screwdriver to fix the screws through
the hole of handle until the handle is fixed
tightly
4. assemble the screw hope cap on the handle
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)

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5.Product specification
5.1 Typespecification(None)
5.2 Electrical parameters
Product Name
UR-BC123CM-SQ
UR-BC123CM-SQ
Product Code
22031010001241
22031010000481
92031010Z00017
92031010Z00019
Name
Item
Type
Specification
Specification
Compressor
Compressor
/
FZ40C1J-U
FZ40C1J-U
Starter
PTC
QP2-4R7
QP2-4R7
Overload protector
OLP
DRB20T61A1
DRB20T61A1
Winding resistance of
compressor wiring
terminal
Rmc:2.5-14.5Ω
Rsc:7.4-21.4Ω
Rms=Rmc+Rsc
Rmc：2.5～14.5Ω
Rsc：7.4～21.4Ω
Rms=Rmc+Rsc
Motor
Fan motor of the
freezing chamber
/
/
/
Ventilation door of the
refrigerating chamber
/
/
/
Condensation fan
/
/
/
Lights inside the
refrigerator
Lights inside the freezing
chamber
/
/
/
Lights inside the
refrigerating chamber
Incandescent lamp
115V/10W
None
Switch of the
refrigerator door
machine switch
sector
sector
5.3Refrigerating temperature
Temperature tolerance ≤ 2 oC
Compartment
The highest (oC)
Lowest (oC)
Freezing
-3
-10
Refrigerating
9
1
Variable temperature
/
/
5.4Defrosting parts
Defrosting period
Initial defrosting period
Normal defrosting period
/
/

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Defrosting sensor
/
/
Defrosting temperature controller
/
/
Thermal fuse
/
/
Defrosting heater in freezing chamber
/
/
5.5Circuit diagram
UR-BC123CM-SQ _22031010001241
UR-BC123CM-SQ _22031010000481、92031010Z00017、92031010Z00019

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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. TEMP control box and knob
2. Freezer door
3. tray
4. Glass shelf
5. Glass shelf
6. Fruits and vegetables box
7. adjustable foot
8. hinge cover
9. steel wire guardrail
10. steel wire guardrail
11. steel wire guardrail
12.
13. steel wire guardrail
14.
6.2External dimension
Front view
Side view

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Down view
Open Door
Maximum open angle of door
(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 air
7.1 Refrigerating piping system
Compressor→condenser→Dry filter→Capillary tube→Evaporator→Return pipe→Compressor
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)
7.2Circulating route of cooling air(None)

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8. 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;
Guardrail
1）Guardrail 1、2、3Grab the Guardrail and
squeeze it sideways
2）Pull out and remove from the refrigerator
1）Guardrail 4Push it along the direction indicated by
the arrowThen dismantle the guardrail
8.2 Parts inside the refrigerator
Shelves

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1）
Lift up the division plate with a proper force and
pull it out towards yourself;
Drawer
The drawer is located at the bottom of freezing and
refrigerating chambers;
1）Pull the drawer out completely;
2）Lift it up slightly and take it out from the
refrigerator.
8.3 Light system
Light
The light at the left of refrigerator chamber
1）Separation lamp cover from the temperature
control box
2）Remove the light bulb
Light switch