Midea TMF Series User manual

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Service Manual TMF SERIES
(The picture in this service manual is only for reference, and specific appearance and configuration are
subject to the real product)
Applicable Models
Model Code
UR-BCD280WE-SQ
22031020000146
UR-BCD326WE-SQ
22031020000125
UR-BCD326WE-SQ
92031020Z00030
UR-BCD280WE-SQ
92031020Z00034
UR-BCD280WE-SQ
92031020Z00035
UR-BCD280WE-SQ
92031020Z00044
Prepared by
R&D:Yan haibing
Reviewed by
QA:Li Jiangli
SVC:Zhang Kun
Approved by
R&D:Ma Rui
SVC:Guang Taoshuai

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WARNING
Important Safety Notice
There are special components used in this equipment which are important for safety. These parts are marked
by in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is
essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire
or other hazards. Do not modify the original design without permission of manufacturer.
WARNING
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 @2017
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 SAFETY INSTRUCTION FOR REFRIGERANT................................................................................................................. 7
2. DESCRIPTION FOR PRODUCT FEATURES..................................................................................................... 8
3. INSTALLATION AND COMMISSIONING............................................................................................................ 9
3.1 HANDLING................................................................................................................................................................... 9
3.2 DOOR DISASSEMBLY AND ASSEMBLY ........................................................................................................................ 9
3.3 INSTALLATION LOCATION ............................................................................................................................................ 9
3.4 LEVELING OF THE REFRIGERATOR........................................................................................................................... 10
3.5 DOOR REVERSAL...................................................................................................................................................... 10
3.6 INSTALLATION OF HANDLE........................................................................................................................................ 12
3.7INSTALLATION OF DOOR LOCK.................................................................................................................................. 12
3.8ADJUSTMENT TO LEVEL THE DOOR .......................................................................................................................... 12
3.9ADJUSTMENT TO SHELVES ....................................................................................................................................... 12
4. TERMS...................................................................................................................................................................13
4.1 DEFINITION OF MODEL(NONE)................................................................................................................................. 13
4.2 LOCATION OF NAMEPLATE(NONE)............................................................................................................................ 13
5. PRODUCT SPECIFICATION...............................................................................................................................14
5.1 TYPE SPECIFICATION(NONE)................................................................................................................................... 14
5.2 ELECTRICAL PARAMETERS....................................................................................................................................... 14
5.3INSIDE TEMPERATURE.............................................................................................................................................. 15
5.4 DEFROSTING PARTS................................................................................................................................................. 15
5.5 CIRCUIT DIAGRAM .................................................................................................................................................... 15
6. INTERNAL VIEW AND DIMENSION ..................................................................................................................16
6.1 MAIN PARTS AND THEIR NAMES................................................................................................................................ 16
6.2 EXTERNAL DIMENSION ............................................................................................................................................. 17
7. REFRIGERATING PIPING SYSTEM AND CIRCULATING ROUTE OF COOLING AIR................................18
7.1 REFRIGERATING PIPING SYSTEM ............................................................................................................................. 18
7.2 CIRCULATING ROUTE OF COOLING AIR..................................................................................................................... 19
8. DISMANTLING OF PARTS..................................................................................................................................20
8.1 PARTS ON THE DOOR................................................................................................................................................ 20
8.2 PARTS INSIDE THE REFRIGERATOR .......................................................................................................................... 20
8.3 LIGHT SYSTEM.......................................................................................................................................................... 21
8.4AIR DUCTAND FAN MOTOR........................................................................................................................................ 21
8.5 EVAPORATOR AND TEMPERATURE SENSING SYSTEM .............................................................................................. 22
8.6 COMPRESSOR CASE ................................................................................................................................................ 24

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8.7 DISPLAY CONTROL BOARD ....................................................................................................................................... 26
8.8MAIN CONTROL BOARD ............................................................................................................................................ 26
8.9 BAR COUNTER.......................................................................................................................................................... 26
8.10WATER DISPENSER................................................................................................................................................ 27
8.11ICE MAKER............................................................................................................................................................... 27
9. FUNCTION AND OPERATION............................................................................................................................28
9.1OPERATION PANEL ................................................................................................................................................... 28
9.2 DISPLAY.................................................................................................................................................................... 28
9.3 SETTING OF THE GEAR............................................................................................................................................. 28
9.4 CONTROL OF STANDBY FUNCTION ........................................................................................................................... 29
9.5 CONTROL OF ICE MAKER (NONE)............................................................................................................................. 29
9.6 FAULT CODE AND SOLUTIONS................................................................................................................................... 29
9.7 DEFROSTING FUNCTION........................................................................................................................................... 29
9.8 TEST MODE............................................................................................................................................................... 29
10. CIRCUIT DESCRIPTION ...................................................................................................................................31
10.1 POWER SUPPLY..................................................................................................................................................... 31
10.2 DOOR TRIP TEST CIRCUIT(NONE).......................................................................................................................... 31
10.3 TEMPERATURE TEST CIRCUIT ................................................................................................................................ 31
10.4 FAN MOTOR CIRCUIT OF THE FREEZING CHAMBER................................................................................................ 32
10.5 REFRIGERATOR FAN MOTOR CIRCUIT (NONE)....................................................................................................... 32
10.6 CONDENSER FAN MOTOR CIRCUIT(NONE)............................................................................................................. 32
10.7 DAMPER MOTOR CIRCUIT(NONE).......................................................................................................................... 32
10.8 SENSOR RESISTANCE(R/T) ................................................................................................................................... 32
11. TROUBLESHOOTING METHOD......................................................................................................................34
11.1 NO COOLING(AIR COOLING-ELECTRONIC)............................................................................................................ 34
11.2 NO WORKING OF COMPRESSOR............................................................................................................................. 35
11.3 INSIDE FROSTING,NO DEFROSTING....................................................................................................................... 36
11.4 INSIDE FROSTING,NO DEFROSTING-MAINTENANCE GUIDELINES.......................................................................... 36
11.5 LIGHT IS NOT ON..................................................................................................................................................... 37
11.6AIR DUCT NOT OPERATED(ELECTRONICALLY)(NONE)........................................................................................... 38
11.7 FAN FAILURE........................................................................................................................................................... 38
11.8 DEFECTIVE DEFROST CIRCUIT ............................................................................................................................... 38
11.9 NOISE ..................................................................................................................................................................... 39
12. FIGURES AND DETAILS OF REPAIR PARTS(DOCUMENTS ARE PROVIDED SEPARATELY) .............40
12.1 FIGURES(NONE)..................................................................................................................................................... 40
12.2 LIST OF PARTS AND COMPONENTS(NONE)............................................................................................................. 40
13. APPENDIX...........................................................................................................................................................41
13.1 REFRIGERATOR MAINTENANCE TOOLINGAND EQUIPMENTAND MATERIAL............................................................ 41

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1. Safety Warning Code
1.1 Warning for operation safety
Important Safety Instructions
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
This symbol indicates that dangerous voltage
constituting a risk of electric shock is present
within your freezer.
This symbol indicates that there are important
operating and maintenance instructions in the
literature accompanying your freezer.
WARNING
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this appliance near water.
6) Clean only with a damp cloth.
7) Do not block any ventilation openings.
8) Install in accordance with the manufacturer’s instructions.
9) Do not install near any heat sources, such as radiators, heat registers, stoves, or
other apparatus that produce heat.
10) Do not defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the third prong are provided for your
safety. If the provided plug does not fit into your outlet, consult an electrician for replacement
of the obsolete outlet.
11) Protect the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the appliance.
12) Do not attempt to modify or extend the power cord of this appliance.
13) Unplug this appliance during lightning storms or when it will not be used for long
periods of time.
14) Make sure that the availableAC power matches the voltage requirements of this
appliance.

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CONNECTING ELECTRICITY
Electrical Shock Hazard.
Plug into a grounded 3-prong outlet.
Do not remove the ground prong.
Do not use an adapter.
Failure to follow these instructions can
result in death, fire, or electrical shock.
WARNING
Electric Shock Hazard
Failure to follow these instructions can result in electric shock, fire, or
death.
1) WARNING–Keep ventilation openings, in both the freezer and the built-in structure,
clear of obstruction.
2) WARNING–Do not touch the interior of the freezer with wet hands. This could result
in frost bite.
3) WARNING–Do not use mechanical devices or other means to accelerate the
defrosting process, other than those recommended by the manufacturer.
4) WARNING–Do not damage the refrigerant circuit.
5) WARNING–Do not damage the refrigerant tubing when handling, moving, or using
the freezer.
6) WARNING–DANGER–Never allow children to play with, operate, or crawl inside the
freezer. Risk of child entrapment. Before you throw away your old freezer:
6-1) Take off the doors
6-2) Leave the shelves in place so that children may not easily climb inside
7) Unplug the freezer before carrying out user maintenance on it.
8) This freezer can be used by children age eight years and older and persons with
reduced physical or mental capabilities or lack of experience and knowledge if they are
given supervision or instruction concerning the use of the freezer in a safe way and
understand the hazards involved. Children should not play with the freezer. Cleaning and
maintenance should not be performed by children without supervision.
9) If a component part is damaged, it must be replaced by the manufacturer, its service
agent, or similar qualified persons in order to avoid a hazard.
10) Please dispose of the freezer according to local regulations as the freezer contains
flammable gas and refrigerant.
11) Follow local regulations regarding disposal of the freezer due to flammable
refrigerant and gas. All refrigeration products contain refrigerants, which under the
guidelines of federal law must be removed before disposal. It is the consumer's
responsibility to comply with federal and local regulations when disposing of this product.
12) This freezer is intended to be used in household and similar environments.

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13) Do not store or use gasoline or any flammable liquids inside or in the vicinity of this
freezer.
14) Do not use extension cords or ungrounded (two-prong) adapters with this freezer. If
the power cord is too short, have a qualified electrician install an outlet near the freezer. Use
of an extension cord can negatively affect the freezer’s performance.
Grounding requirement
This freezer must be grounded. This freezer is equipped with a cord having a grounding
wire with a grounding plug. The plug must be inserted into an outlet that is properly installed
and grounded.
Improper use of the grounding plug can result in a risk of electric shock. Consult a
qualified electrician or service person if the grounding instructions are not completely
understood, or if doubt exists as to whether the freezer is properly grounded.
1.2 Safety instruction for refrigerant
Explosion Hazard.
Keep flammable materials and vapors, such as gasoline, away from freezer. Failure to do so
can result in fire, explosion, or death.
Safety instruction for refrigerant
DANGER–Risk of Fire or Explosion. Flammable Refrigerant Used. To Be Repaired Only By
Trained Service Personnel. Do Not Use Mechanical Devices. Do Not Puncture Refrigerant
Tubing. CAUTION–Risk of Fire or Explosion. Flammable Refrigerant Used. Consult Repair
Manual/Owner’s Guide Before Attempting To Service This Product. All Safety Precautions
Must be Followed. CAUTION–Risk of Fire or Explosion. Dispose of Properly InAccordance
With Federal Or Local Regulations. Flammable Refrigerant Used. CAUTION–Risk of Fire or
Explosion Due To Puncture Of Refrigerant Tubing; Follow Handling Instructions Carefully.
Flammable Refrigerant Used.

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2. Description for product features
This product is provided with following features:
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
3.1 Handling
Handling
1)Protect the refrigerator in moving it,Same as shown as
left photo, please move it by handcart with cushion
2)Remove all packing materials and bottom cushion, the
n move into house for placement
3)After moving it to appropriate location, wait for 2 hours
before power on.
3.2 Door Disassembly and Assembly
The refrigerator door needs to be dismantled if it cannot enter the room in the whole.
Disassembly of Freezer door
Disassembly of Freezer door
None
Disassembly of refrigerator door
Disassembly of refrigerator door
None
3.3 Installation location
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
Leveling of the refrigerator
If the refrigerator cannot be placed steadily, adjust the
footing to level it.
3.5 Door reversal
Door reversal
1. Remove the hinge cover and the screw holes cover.
Unscrew and remove the top hinge.
2. Lift the freezer door up and away from the appliance.
3. Unscrew the two screws holding the center hinge,
remove the hinge, then lift the refrigerator door up and away
from your refrigerator. Save the screws to reuse.

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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.

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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.
3.6 Installation of handle
Installation of handle
Installation of handle
None
3.7 Installation of door lock
Installation of door lock
Installation of door lock
None
3.8 Adjustment to level the door
Adjustment to level the door
Adjustment to level the door
None
3.9 Adjustment to shelves
Adjustment to shelves
Adjustment to shelves
None

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4. Terms
4.1 Definition of model(None)
4.2 Location of nameplate(None)

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5. Product specification
5.1 Type specification(None)
5.2 Electrical parameters
Product Name
UR-BCD280WE-SQ
UR-BCD326WE-SQ
None
None
Product Code
22031020000146
92031020Z00044
92031020Z00035
92031020Z00034
22031020000125
92031020Z00030
None
None
Item
Specification
Specification
Specification
Specification
Compressor
Compressor
EZ80H1Z
EZ80H1Z
None
None
Starter(PTC)
QPE2-A4R7MD3
QPE2-A4R7MD3
None
None
Overload
protector(OLP)
DRB31T61A1
DRB31T61A1
None
None
Winding resistance of
compressor wiring
terminal
Rmc:4.32±7%Ω
Rsc:3.78±7%Ω
Rms=Rmc+Rsc
Rmc:4.32±7%Ω
Rsc:3.78±7%Ω
Rms=Rmc+Rsc
None
None
Winding resistance
picture
None
None
Variable frequency
driver board
None
None
None
None
Motor
Fan motor of the
freezing chamber
DC12V/4W
DC12V/4W
None
None
Ventilation door of the
refrigerating chamber
None
None
None
None
Condensation fan
None
None
None
None
separation the ice
motor
None
None
None
None
ice output motor
None
None
None
None
Open door motor
None
None
None
None
Lights inside the refrigerator
Lights inside the
freezing chamber
None
None
None
None
Lights inside the
refrigerating chamber
115V/15W
115V/15W
None
None
Switch of the
Sector
Sector
Sector
None

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refrigerator door
5.3 Inside temperature
Temperature tolerance ≤ 2 oC
Compartment
The highest (oC)
Lowest (oC)
Freezing
-14
-24
Refrigerating
9
1
Variable temperature
/
/
5.4 Defrosting parts
Item
Initial defrosting period
Normal defrosting period
Defrosting period
Temperature is lower than 0oC
6~24 hours
Defrosting sensor
NTC B3839
NTC B3839
Defrosting temperature
controller
None
None
Thermal fuse
Can’t be restored 73℃
Can’t be restored 73℃
Defrosting heater in freezing
chamber
115V/160W
115V/160W
5.5 Circuit diagram
BCD280_22031020000146\92031020Z00044\92031020Z00035\92031020Z00034
(BCD326WE_22031020000125_ 92031020Z00030)

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6. Internal view and dimension
6.1 Main parts and their names
Freezer chamber
Refrigerator chamber
❶Air duct components in freezing chamber
❼Steel wire shelf in freezing chamber
❽Bottle frame in freezing chamber
❷Air duct components in refrigerating chamber
❸Glass shelve
❹Cover plate of crisper
❺Crisper for fruit and vegetable
❻Regulating foot
❾lamp switch
❿Zip-top can frame
⓫Bottle frame in refrigerating chamber

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6.2 External dimension
Description
Code
Size (mm)
BCD280
BCD326
None
Height to Top of Case
A
1519
1519
None
Width
B
610
610
None
Depth w/Handles
C
655
725
None
Depth (90 eg with Door Open)
D
1214
1284
None
Width (door open 90 eg. w/ handle)
E
None
None
None

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7. Refrigerating piping system and circulating route of cooling air
7.1 Refrigerating piping system
BCD280_22031020000146(BCD326WE_22031020000125)
❶Compressor→❷Right condenser→❸Anti-condensation tube→❹Left Condenser→❺Dry
filter→❻Capillary tube→❼Evaporator→❽Suction tube→❶Compressor

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7.2 Circulating route of cooling air

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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
While squeezing it inward, lift up the baffle and take it out
from refrigerator liner.
Door stopper
Door stopper
None
rollover beam
rollover beam
None
8.2 Parts inside the refrigerator
Refrigerator Fruit box cover
Remove the crisper cover of ref. compartement accordin
g to below steps:
1）1）Take out the crisper firstly.
2）2）Pull out the crisper cover completely.
Shelves
1）Lift up the division plate with a proper force and pull it
out towards yourself.
Drawer
Drawer
None