Midea HS-377CN User manual

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Service Manual
CHEST FREEZER SERIES
Applicable Models
Model Code
Applicable Models
HS-377CN
CE-BD290-FT
22032010002322
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.
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.

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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
2.1 WARNING FOR OPERATION SAFETY.................................................................................................................6
2.2 SAFETY INSTRUCTION FOR REFRIGERANT .......................................................................................................8
3. TRANSPORT ...................................................................................................................................................9
3.1 HANDLING.....................................................................................................................................................9
4. INSTALLATION AND COMMISSIONING ..................................................................................................... 10
4.1DOOR DISASSEMBLY AND ASSEMBLY(NONE)................................................................................................. 10
4.2 INSTALLATION LOCATION.............................................................................................................................. 10
4.3 LEVELING OF THE REFRIGERATOR................................................................................................................ 10
4.4 INSTALLATION OF HANDLE............................................................................................................................ 10
4.5 INSTALLATION OF DOOR LOCK（NONE）.......................................................................................................11
5. PRODUCT CONFIGURATION AND DIMENSION ....................................................................................... 12
5.1 MAIN PARTS AND THEIR NAMES .................................................................................................................... 12
5.2 EXTERNAL DIMENSION ................................................................................................................................ 13
5.3 LOCATION OF S/N....................................................................................................................................... 14
6. PRODUCT SPECIFICATION ........................................................................................................................ 15
6.1 ELECTRICAL PARAMETERS........................................................................................................................... 15
6.2 COOLING TEMPERATURE SETTING RANGE .................................................................................................... 15
6.3 CIRCUIT DIAGRAM....................................................................................................................................... 16
7.REFRIGERATING PIPING SYSTEM AND CIRCULATING ROUTE OF COOLING AIR .............................. 17
7.1 REFRIGERATING PIPING SYSTEM.................................................................................................................. 17
7.2 SPECIAL SOLDERING POSITION .................................................................................................................... 17
8. DISMANTLING OF PARTS........................................................................................................................... 18
8.1 PARTS ON THE DOOR .................................................................................................................................. 18
8.2PARTS INSIDE THE REFRIGERATOR ............................................................................................................... 19
8.3 LIGHT SYSTEM............................................................................................................................................ 20
8.4 COMPRESSOR CASE ................................................................................................................................... 20
8.5TEMPERATURE-CONTROL BOX ASSEMBLY...................................................................................................... 24
9. FUNCTION AND OPERATION ..................................................................................................................... 27
9.1 OPERATION PANEL...................................................................................................................................... 27
9.2TEMPERATURE CONTROL ............................................................................................................................. 27
9.3HIGH TEMPERATURE AN ALARM..................................................................................................................... 28
9.4DEFROSTING FUNCTION............................................................................................................................... 28

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10. COMPRESSOR........................................................................................................................................... 29
10.1COMPRESSOR ON AND OFF CONTROL SPECIFICATIONS ................................................................................ 29
11. TROUBLESHOOTING METHOD................................................................................................................ 30
11.1NOT COOLING............................................................................................................................................ 30
11.2 NO WORKING OF COMPRESSOR ................................................................................................................. 31
11.3THERMOSTAT MALFUNCTION-UNDERCOOLING ............................................................................................. 31
11.4 LIGHT IS NOT ON ....................................................................................................................................... 32
11.5 NOISE ...................................................................................................................................................... 32
13. FIGURES AND DETAILS OF REPAIR PARTS .......................................................................................... 33

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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. 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 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.
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.
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 In Accordance
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 Handling
Handling
1)Protect the refrigerator in moving it,Same as shown as lef
tphoto, 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 2hours 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.
4.4 Installation of handle
Installation of handle

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1- Handle
2- M5*14 screw(two)
3- Screw hole cover (two)
1) The handle is inserted below the display control board
of door, aligning with the screw hole.
2) Fixing the handle by using the screw.
3) Assemble the screw hole cover onto the screw hole.
1.Fix the lock loop to its mounting hole near the frame in
the front side plate of the box with a M4x20 or M4x8
screw. Pay attention to the direction of the lock loop with
its countersunk side facing outwards.
2.Hold the handle with the left hand, and aim its
mounting hole at the mounting hole of the door. Insert the
key into the keyhole with the right hand, and then turn the
key clockwise to drive the rotation of the lock hook.
Meanwhile, adjust the position of the handle from side to
side in a proper manner to ensure the lock hook can
hook the lock loop in locked state. Afterwards, fix the
handle to the door with four M5X16 screws.
3.Install the handle cover
4.5 Installation of door lock（None）
Installation of door lock
Installation of door lock
With the door handle together

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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
❶ Door shell
❷ The door end cover
❸ Door gasket
❹ Door liner
❺ Cabinet assembly
❻ Drain-pipe cover
❼ Levelling feet
❽ Compressor mounting panel
❾ Temperature-control panel
❿ Hinge
⓫ Lamp cover
⓬ Door handle

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5.2 External dimension
Description
Code
HS-185CNSize (mm)
Height to Top of Case
A
850
Width
B
1115
Depth/Hinge
C
672
Depth
D
645
Height (Door open)
E
1455
(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-377CN
Product Name
CE-BD290-FT
Product Code
22032010002322
Item
Specification
Specification
Refrigerant
R600a
Compressor
SZ90E1H-SCL
Starter(PTC)
QP2-15
Overload protector(OLP)
DRB20T61A1
Integrate PTC+OLP
QPS2-B15MG1＋DRB20T61A1
Variable frequency driver board
None
Capacitor
None
Winding resistance of compressor
wiring terminal
Rmc：20.81±7%Ω
Rsc：20.81±7%Ω
Rms=Rmc+Rsc
Winding resistance picture
The input power of compressor
160W
Lights inside the refrigerator
Door lamp
None
Indicator lamp
Power+run+Super
Switch of the refrigerator door
■Mechanical switch
□Magnetism control switch
6.2 Cooling temperature setting range
Compartment
The highest (oC)
Lowest (oC)
Freezing
-12
-26
Refrigerating
10
1

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6.3 Circuit diagram

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

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8. Dismantling of parts
8.1 Parts on the door
Door seal
1)Pull the door seal from the corner
2)Take efforts until door seal totally detaches from door
inner liner groove, remove the door seal
3)Fixing the four corners and pressing smoothly.
The hinge cover
The hinge cover teardown
1) Strongly apart a proper angle with your hands along
the side wall of the lower hinge cover when the
refrigerator door is open to separate the hinge cover
boss from the hinge hole and outwardly remove the lower
hinge cover. ❶❷Note: ❶ represents the upper hinge
cover, and ❷ represents the lower hinge cover.
2) Remove the upper hinge cover in the same way. Then
both the lower and upper hinge covers are all removed.
❷
❶

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The hinge cover install
1) Apart a proper angle with your hands along the side
wall of the lower hinge cover when the refrigerator door is
closed, align to the side wall of hinge and push forward
until the hinge cover boss is fully and correctly inserted
into the hinge holes;
2) Hold the side of hinge cover with your hands, align the
opening to the side wall of hinge and push downward
until the hinge cover boss is fully and correctly inserted
into the hinge holes. Then the upper and lower hinge
covers are all installed in place.
Door lamp line
1) Remove the two screws; 2) Press the clip with your
hand to disconnect the block terminal and separate the
wiring harness ❶❷Note: ❶ represents the door lamp
line; ❷ represents the wiring harness connecting the
refrigerator.
8.2Parts inside the refrigerator
Basket
Open the door and upwardly lift the basket Note: There
are plastic baskets and wire baskets, and the basket we
offer you is subject to the real product you received.
Inside water pipe cover
Counterclockwise to remove the pipe cover
❷
❶

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8.3 Light system
Door lamp
Door lamp disassembly
1) Open the refrigerator door to dismantle the lamp
cover; Note: There are two kinds of door lamps, namely,
incandescent lamp and LED lamp, and what is shown in
the picture is the incandescent lamp.
2) Screw off the screws to remove the incandescent lamp
holder or LED lamp panel; Note: The incandescent lamp
is shown in the left picture, and the LED lamp is shown in
the right picture, which is mounted on the mounting
panel.
3) Screw the lamp off the holder (or remove the LED
lamp panel).
Pilot light
Pilot light
POWER+RUN+ALARM
8.4 Compressor case
shutter
Pull down the screw, open the shutter.
Compressor and the cooling system pipe