Midea HS-507FWEN User manual

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Service ManualUPRIGHT SERIES
Applicable Models
Model Code
Applicable Models
HS-507FWEN
UR-BD390WE-ST
22031010002261
HS-625FWEN
UR-BD481WE-ST
22031010002241
HS-772FWEN
UR-BD594WE-ST
22031010002242
The picture in this service manual is only for reference, and specific appearance
and configuration are subject to the real product.
This manual mainly teaches the method, the specific work skill needs engineer to
accumulate through the daily work.

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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. SIGNIFICANT UPDATE NOTES(NONE) .....................................................................................................5
2. SAFETY WARNING CODE..............................................................................................................................6
2.1WARNING FOR OPERATION SAFETY.................................................................................................................6
2.2 SAFETY INSTRUCTION FOR REFRIGERANT .......................................................................................................8
3. TRANSPORT ...................................................................................................................................................9
3.1 CONTAINER TRANSPORT ................................................................................................................................9
3.2 HANDLING.................................................................................................................................................. 10
4. INSTALLATION AND COMMISSIONING......................................................................................................11
4.1DOOR DISASSEMBLY ANDASSEMBLY(NONE)..................................................................................................11
4.2 INSTALLATION LOCATION...............................................................................................................................11
4.3 LEVELING OF THE REFRIGERATOR.................................................................................................................11
4.4 LEFT OR RIGHT OPEN DOOR REVERSAL(NONE)............................................................................................. 12
4.5 INSTALLATION OF HANDLE............................................................................................................................ 12
4.6 INSTALLATION OF DOOR LOCK（NONE）...................................................................................................... 12
5. PRODUCT CONFIGURATION AND DIMENSION ....................................................................................... 13
5.1 MAIN PARTS AND THEIR NAMES.................................................................................................................... 13
5.2 EXTERNAL DIMENSION ................................................................................................................................ 14
5.3 LOCATION OF S/N....................................................................................................................................... 15
6. PRODUCT SPECIFICATION ........................................................................................................................ 16
6.1 ELECTRICAL PARAMETERS........................................................................................................................... 16
6.2 COOLING TEMPERATURE SETTING RANGE .................................................................................................... 16
6.3 DEFROSTING PARTS.................................................................................................................................... 17
6.4 CIRCUIT DIAGRAM....................................................................................................................................... 17
6.5MAIN CONTROL BOARD STRUCTURE DIAGRAM ............................................................................................... 18
7. REFRIGERATING PIPING SYSTEM AND CIRCULATING ROUTE OF COOLING AIR............................. 19
7.1 REFRIGERATING PIPING SYSTEM.................................................................................................................. 19
7.2 SPECIAL SOLDERING POSITION .................................................................................................................... 19
7.3 CIRCULATING ROUTE OF COOLING AIR.......................................................................................................... 20
8. DISMANTLING OF PARTS........................................................................................................................... 21
8.1 PARTS ON THE DOOR .................................................................................................................................. 21
8.2PARTS INSIDE THE REFRIGERATOR................................................................................................................ 21
8.3 LIGHT SYSTEM............................................................................................................................................ 22
8.4AIR DUCT COMPONENTS FREEZING CHAMBER AND FAN MOTOR....................................................................... 22
8.5AIR DUCT COMPONENTS IN REFRIGERATING CHAMBERAND FAN MOTOR(NONE)............................................... 23
8.6 EVAPORATOR AND DEFROST SYSTEM........................................................................................................... 24
8.7 COMPRESSOR CASE ................................................................................................................................... 25

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8.8 DISPLAY CONTROL BOARD........................................................................................................................... 29
8.9 MAIN CONTROL BOARD ............................................................................................................................... 30
8.10WATER DISPENSER （NONE）.................................................................................................................. 30
8.11ICE MAKER (NONE).................................................................................................................................... 31
8.12WATER FILTER COMPONENT (NONE)............................................................................................................ 31
9. TEMPERATURE SENSING SYSTEM .......................................................................................................... 32
9.1POSITION OF SENSORS................................................................................................................................ 32
9.3 REPLACEMENT OF SENSORS ....................................................................................................................... 32
9.4 SENSOR REPLACEMENT.............................................................................................................................. 33
9.5 SENSOR RESISTANCE(R/T) ......................................................................................................................... 34
10. FUNCTION AND OPERATION ................................................................................................................... 36
10.1 OPERATION PANEL.................................................................................................................................... 36
10.2DISPLAY.................................................................................................................................................... 36
10.3 TEMPERATURE SETTING............................................................................................................................ 37
10.4 FAULTALARM DISPLAYAND PROCESSING.................................................................................................... 37
10.5 LED MODULE CONTROL ............................................................................................................................ 40
10.6 QUICK FREEZING MODE............................................................................................................................. 40
10.7 DEFROSTING FUNCTION............................................................................................................................ 41
10.8 MAINTENANCE MODE................................................................................................................................ 41
10.9 FIRST POWER-ON AND MEMORY FUNCTION................................................................................................. 42
11. COMPRESSOR AND FAN.......................................................................................................................... 43
11.1COMPRESSOR STARTUP AND SHUTDOWN CONTROL RULES........................................................................... 43
11.2FAN OPENING AND CLOSING CONTROL......................................................................................................... 43
12. TROUBLESHOOTING METHOD ............................................................................................................... 44
12.1NO COOLING (AIR COOLING-ELECTRONIC).................................................................................................. 44
12.2 NO WORKING OF COMPRESSOR................................................................................................................. 45
12.3 INSIDE FROSTING,NO DEFROSTING............................................................................................................ 45
12.4 INSIDE FROSTING,NO DEFROSTING-MAINTENANCE GUIDELINES .................................................................. 46
12.5 LIGHT IS NOT ON....................................................................................................................................... 47
12.6 FAN FAILURE ............................................................................................................................................ 47
12.7 DEFECTIVE DEFROST CIRCUIT ................................................................................................................... 48
12.8 NOISE...................................................................................................................................................... 48
12.9AIR DUCT NOT OPERATED(ELECTRONICALLY)(NONE).................................................................................. 49
13. FIGURES AND DETAILS OF REPAIR PARTS .......................................................................................... 50

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1. Significant update notes(None)

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2. Safety Warning Code
2.1 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. Agrounding 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 available AC 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.

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12) This freezer is intended to be used in household and similar environments.
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.
2.2 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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3. Transport
3.1 Container transport
Packing Size(LWH):
BD390 760*800*1620
BD481 885*775*1690
BD594 885*775*1990
Container
specification(LWH):
40HQ（12.032*2.352*2.690）m
Container scheme，and
Container QTY:
What floor
QTY
390/481/594
Door direction
Cabinet direction
1st floor
45/39/39
Outside
/
2nd floor
21/19/0
Outside
/
Total
66/58/39
Container diagram
BD390
BD481
BD594

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Notes：The goods on the top layer of the container may conflict with the position of the side corner of the
container.
3.2 Handling
Handling
1)Protect the refrigerator in moving it,Same as shown as lef
t photo, please move it by handcart with cushion
2)Remove all packing materials and bottom cushion, the m
ove into house for placement
3)After moving it to appropriate location, wait for 2 hours bef
ore power on.

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4. Installation and commissioning
4.1Door Disassembly and Assembly(None)
The refrigerator door needs to be dismantled if it cannot enter the room in the whole.
4.2 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.
4.3 Leveling of the refrigerator
Leveling of the refrigerator
If the refrigerator cannot be placed steadily, adjust the
footing to level it.

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4.4 Left or right open door reversal(None)
Door reversal(None)
None
4.5 Installation of handle
Installation of handle
Installation of handle
Installation of handle
1）Take two handle screws,install in the door hole,and
screw the screw to low.
2）Alignment screw installation handle
3）Screw in the side hole of the revolving handle and fix
the handle.
Note: The wrench is placed in the appendage bag.
4.6 Installation of door lock（None）

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5. Product configuration and dimension
5.1 Main parts and their names
(The picture is only for reference, and specific appearance and configuration are subject to the real
product)
Freezer chamber
Refrigerator chamber
①Air duct components in frezzer/refrigerating
chamber
②Steel wire shelf of freezer/refrigerating
③Air duct components in frezzer/refrigerating
chamber
④Steel wire drawer
⑤Big bottle frame in freezer/refrigerating
chamber
⑥Small bottle frame in freezer /refrigerating
chamber
⑦Regulating foot

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5.2 External dimension
Description
Code
HS-507FWEN
Size (mm)
HS-625FWEN
Size (mm)
HS-772FWEN
Size (mm)
Height to Top of Case
A
1570
1650
1950
Width
B
711
830
830
Depth w/Cabinet
C
680
660
660
Depth w/Door
D
750
735
735
Depth w/Handle
E
800
794
794
Depth (Door open 90 deg.
w)
F
1415
1528
1528
Depth (Door open 135
deg. w)
G
1242
1310
1310
Width (Door open 135
deg. w)
H
1230
1442
1442
(The picture is only for reference)

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5.3 Location of S/N
Some
products also have S/N on the lower part of the right side of the Cabinet.

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6. Product specification
6.1 Electrical parameters
Applicable Models
HS-507FWEN
HS-625FWEN
HS-774FWEN
Product Name
UR-BD390WE-ST
UR-BD481WE-ST
UR-BD594WE-ST
Product Code
22031010002261
22031010002242
22031010002241
Item
Specification
Specification
Refrigerant
R600a
R600a
R600a
Compressor
EZ75E1A
EZ75E1A
EZ90H1A
Starter(PTC)
8EA14C3-02
8EA14C3-02
8EA14C3-02
Overload protector(OLP)
4TM302TFBYY
4TM302TFBYY
4TM319TFBYY
Integrate PTC+OLP
None
None
None
Variable frequency driver board
None
None
None
Capacitor
8μF
8μF
12μF
Power filter
None
None
None
Winding resistance of
compressor wiring terminal
Rmc：5.35±7%Ω
Rsc：8.01±7%Ω
Rms=Rmc+Rsc
Rmc：5.35±7%Ω
Rsc：8.01±7%Ω
Rms=Rmc+Rsc
Rmc：4.03±7%Ω
Rsc：4.21±7%Ω
Rms=Rmc+Rsc
Winding resistance picture
The input power of compressor
93.3W
93.3W
111.8W
Motor
Fan motor of the freezer
chamber
DC12V/≤2.4W
DC12V/≤2.4W
DC12V/≤2.4W
Lights inside the refrigerator
Lights inside the freezer
chamber
LED DC12V
LED DC12V
LED DC12V
Switch of the refrigerator door
■Mechanical switch
□Magnetism control
switch
■Mechanical
switch
□Magnetism
control switch
■Mechanical
switch
□Magnetism
control switch
6.2 Cooling temperature setting range
Compartment
The highest (oC)
Lowest (oC)
Freezing
-14
-26
Refrigerating
/
/

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6.3 Defrosting parts
Electronic type
Item
Specification
Defrosting sensor
/
Fuse
77(0,-4) ℃
Defrost heater in freezing chamber
BD390 115V 280
BD481/594 115V 320W
6.4 Circuit diagram
F: Freezer R: Refrigerator FD: Freezer Defrost C: Condensation A: Ambient temperature

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6.5Main control board structure diagram

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

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7.3 Circulating route of cooling air