Midea SBS Series User manual

1 / 54
SBS SERIES
Service Manual 2016

Service Manual, 2016-12
1/ 51
Service Manual
Applicable models
Model Code
CE-BCD505WE-ST
22031050000381
(The picture is only for reference, and specific appearance and configuration are subject to the real product)
Prepared by
R&D:HuDahong
Reviewed by
QA:WangTao
SVC:ChenLei
Approved by
R&D:ZhangHaixing
SVC:GuangTaoshuai

Service Manual, 2016-12
2/ 51
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.

Service Manual, 2016-12
3/ 51
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
3.2 Door Disassembly and Assembly...............................................................................................................10
3.3 Installation location ....................................................................................................................................14
3.4 Leveling of the refrigerator ........................................................................................................................14
3.5Door reversal (None)...................................................................................................................................14
3.6 Installation of handle..................................................................................................................................14
3.7 Installation of door lock(None) ..................................................................................................................15
3.8 Adjustment to level the door ......................................................................................................................15
3.9 Adjustment to shelves(None) .....................................................................................................................15
4.Terms.....................................................................................................................................................................16
4.1 Definition of model(None).........................................................................................................................16
4.2Location of nameplate .................................................................................................................................16
5.Product specification .............................................................................................................................................17
5.1 Typespecification(None) ............................................................................................................................17
5.2 Electrical parameters ..................................................................................................................................17
5.3 制冷温度 Inside temperature .....................................................................................................................18
5.4 除霜部件 Defrosting parts .........................................................................................................................18
5.5 电路图 Circuit diagram..............................................................................................................................18
6.Internal view and dimension .................................................................................................................................19
6.1Main parts and their names .........................................................................................................................19
6.2External dimension......................................................................................................................................20
7.Refrigerating piping system and circulating route of cooling air..........................................................................21
7.1 Refrigerating piping system .......................................................................................................................21
7.2Circulating route of cooling air ...................................................................................................................21
8. 8. Dismantling of parts .........................................................................................................................................22
8.1 Parts on the door.........................................................................................................................................22
8.2 Parts inside the refrigerator ........................................................................................................................23
8.3 Light system ...............................................................................................................................................24
8.4Air duct components refrigeratingchamber.................................................................................................25
8.5Air duct components in freezing chamber and fan motor ...........................................................................25
8.6Evaporator and temperature sensing system ...............................................................................................27
8.7Compressor case..........................................................................................................................................29
8.8Display control board ..................................................................................................................................30
8.9Main control boardl.....................................................................................................................................31
8.10Bar counter ................................................................................................................................................32
8.11 Water dispenser(None) .............................................................................................................................33
8.12Ice maker ...................................................................................................................................................33

Service Manual, 2016-12
4/ 51
9. Function and operation.................................................................................................................................35
9.1Operation panel ...........................................................................................................................................35
9.2Temperature control ....................................................................................................................................35
9.3give an alarm ...............................................................................................................................................36
9.4 Defrosting...................................................................................................................................................36
9.5 Function Selection......................................................................................................................................36
9.6 Self-diagnosis .............................................................................................................................................37
9.7Compressor fan control(None)....................................................................................................................37
9.8 Error code and solution ..............................................................................................................................37
10.Circuit description...............................................................................................................................................38
10.1 Power Supply ...........................................................................................................................................38
10.2Test circuit for door switch........................................................................................................................38
10.3 Temperature test circuit ............................................................................................................................39
10.4Freezer fan motor circuit ...........................................................................................................................39
10.5REF.fan motor circuit(None).....................................................................................................................40
10.6Condenser fan motor circuit(None)...........................................................................................................40
10.7Damper motor circuit ................................................................................................................................40
10.8Sensor resistance(R/T) ...............................................................................................................................40
11.Troubleshooting Method .....................................................................................................................................41
11.1No cooling(Air cooling-Electronic)...........................................................................................................41
11.2No working of compressor ........................................................................................................................42
11.3Inside frosting, no defrosting.....................................................................................................................42
11.4-Inside frosting, no defrosting-Maintenance guidelines ............................................................................43
11.5Light is not on............................................................................................................................................44
11.6Air duct not operated(electronically).........................................................................................................44
11.7Fan failure..................................................................................................................................................45
11.8Defective defrost circuit ............................................................................................................................45
11.9Noise..........................................................................................................................................................46
12. Figures and details of repair parts(Documentsareprovidedseparately) ..............................................................46
12.1Figures.......................................................................................................................................................46
12.2List of parts and components.....................................................................................................................46
13Appendix:.............................................................................................................................................................46
13.1Electrical Schematic Diagram ...................................................................................................................46
13.2Refrigerator maintenance tooling and equipment and material.................................................................47

Service Manual, 2016-12
5/ 51
1.Safety Warning Code
1.1Warning for operation safety

Service Manual, 2016-12
6/ 51

Service Manual, 2016-12
7/ 51

Service Manual, 2016-12
8/ 51
1.2Safety instruction for refrigerant

Service Manual, 2016-12
9/ 51
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) Frost free design.
2) Electronic temperature control, more accurate temperature control.
3) Automatic ice maker, options for ice cube, crushed ice and cooling water

Service Manual, 2016-12
10 / 51
3.Installation and commissioning
3.1Handling
1) Protecttherefrigeratorinmovingit ,Same
asshownasleftphoto,pleasemoveitby
handcartwithcushion
2) Removeallpackingmaterialsandbottom
cushion,thenmoveintohouseforplacement
3) Aftermovingittoappropriatelocation,waitfor
2hoursbeforepoweron.
3.2 Door Disassembly and Assembly
The refrigerator door needs to be dismantled if it cannot enter the room in the whole.
disassembly
Disassembly of Freezer door
1.Use cross screwdriver to remove the screws by
anticlockwise, and then take out the protective cover.
2.Pull out the spacing guard sheet at the two ends of
water connector, and then push the locked cushion
inwards, meantime pull out water pipe.
Note: please make sure the fast connector can’t be left
at the end of water pipe of door

Service Manual, 2016-12
11 / 51
3.2As shown as right photos, use screwdriver to
remove the 2 pcs screws, and then remove the upper
hinge cover.
4.Disconnect the fast connectors, then use cross
screwdriver or socket spanner to remove the 2pcs M5
screws and 1 pc grounding screw by anticlockwise.
5.Lift up the freezer door until the hinge axis
separated from the axis hole of door, then carry the
door to a suitable place.
Disassembly of refrigerator door
1.Use screwdriver to remove the 2 pcs screws, and
then remove the upper hinge cover.
2.Use cross screwdriver or socket spanner to remove
the 2 pcs M5 screws by anticlockwise, and then
remove the upper hinge.
Note: please make sure the refrigerator door fit closely
to the cabinet; otherwise the refrigerator door may fall
down during above operation.

Service Manual, 2016-12
12 / 51
3.Lift up the refrigerator door until the hinge axis
separated from the axis hole of door, then carry the
door to a suitable place.
Assembly
Assembly of freezer door
1.Put the freezer door down gently until the axis of
hinge inserted into the axis hole of door completely.
2.Put the upper hinge on suitable position, then use
cross screwdriver or socket spanner to fix the 2 pcs
M5 screws and 1 pc grounding screw by clockwise,
and connect the 6 pcs fast connectors.
3.Put the cover of upper hinge on suitable position,
then use screwdriver to fix the 2 pcs screws
4.Push the locked cushion of water connector
inwards, then insert the water pipe into the water
connector to the end, and finally assemble the spacing
guard sheet.
Note: the water pipe cant be connected incorrectly,
only the water pipes in same color can be connected

Service Manual, 2016-12
13 / 51
5.Assemble the protective cover and fix the screws
assembly of refrigerator door
1.Put the refrigerator door down gently until the axis
of hinge inserted into the axis hole of door completely,
and then closes the door, to make sure the refrigerator
door fit the cabinet closely.
2.Put the upper hinge on suitable position, then use
cross screwdriver or socket spanner to fix the 2 pcs
M5 screws.
3.Put the hinge cover on suitable position, and then
use the screwdriver to fix the 2 pcs screws.

Service Manual, 2016-12
14 / 51
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.
3.5Door reversal (None)
3.6 Installation of handle
Note: Figures in the user manual are only for reference. The actual product may differ slightly.
The refrigerator must be disconnected from the source of electrical supply before attempting the installation of
accessory.

Service Manual, 2016-12
15 / 51
a. fix the bolt of handle
b. tighten the screw of hanle
c. cover screw hole by cap
(Pictures and objects are not consistent, in order to prevail in kind)
3.7 Installation of door lock(None)
3.8 Adjustment to level the door
a. Refrigerator door lower: loosen locking
nut counterclockwise, then rotate the
adjusting nut counterclockwise to adjust the
height of door, at last tighten the locking nut
clockwise.
b. Refrigerator door higher: loosen locking
nut counterclockwise firstly, then rotate the
adjusting nut clockwise, at last tighten the
locking nut clockwise.
3.9 Adjustment to shelves(None)

Service Manual, 2016-12
16 / 51
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)

Service Manual, 2016-12
17 / 51
5.Product specification
5.1 Typespecification(None)
5.2 Electrical parameters
Product Name
CE-BCD505WE-ST
/
Product Code
22031050000381
/
Name
Item
Type
Specification
Specification
Compressor
Compressor
/
LU118PY1
/
Starter
PTC
/
/
Overload
protector
OLP
B69-120 P A
/
Winding
resistance of
compressor wiring
terminal
U-W:12.4Ω±5%
U-V:12.4Ω±5%
W-V:12.4Ω±5%
/
Variable
frequency driver
board
/
/
/
Motor
Fan motor of the
freezing chamber
BLDC
DC12V/≤4W
/
Ventilation door of
the refrigerating
chamber
/
DC12V
/
Condensation fan
/
/
/
separation the ice
motor
/
DC12V
/
ice output motor
/
DC12V
/
Open door motor
/
DC12V
/
Lights inside
the
refrigerator
Lights inside the
freezing chamber
LED
12V≤2.5W
/
Lights inside the
refrigerating
chamber
LED
12V≤2.5W
/
Switch of the
refrigerator door
LED
5V≤0.4W
/

Service Manual, 2016-12
18 / 51
5.3 制冷温度 Inside temperature
Temperature tolerance ≤ 2°C
Compartment
The highest (oC)
Lowest (oC)
Freezing
-14
-24
Refrigerating
9
1
Variable temperature
/
/
5.4 除霜部件 Defrosting parts
Defrosting period
Initial defrosting period
Normal defrosting period
Temperature is lower than 0 oC
6~24 hours
Defrosting sensor
NTC
B3839
Defrosting temperature controller
/
/
Thermal fuse
Cant be restored
77 oC
Defrosting heater in freezing chamber
/
Defrosting heater 230V/250W
5.5 电路图 Circuit diagram
MAIN PCB

Service Manual, 2016-12
19 / 51
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.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Freezer
Refrigerator
1. door rack
2. door rack
3. ice tank
4. shelf
5. drawer
6.shelf
7. shelf
8. shelf
9.vegetable crisper
10. bottle rack
11.bar counter