Midea SBS Series Service Manual
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Midea SBS Series Service Manual

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Service Manual_2018-V2.0
Service Manual
SBSSERIES
Applicable Models
Model Code
Applicable Models
HC-957WEN
UR-BCD746WE-DT
22031050000741
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.
1

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May 31, 2025

Hi, I want to ask can the baseboard part of this Midea fridge be removed?

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Summary of Contents for Midea SBS Series

  • Page 1 Service Manual_2018-V2.0 Service Manual SBSSERIES Applicable Models Model Code Applicable Models HC-957WEN UR-BCD746WE-DT 22031050000741 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.
  • Page 2 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.

  • Page 3: Table Of Contents

    Service Manual_2018-V2.0 Contents SIGNIFICANT UPDATE NOTES(NONE) .....................5 2. SAFETY WARNING CODE ..........................6 2.1 W ........................ 6 ARNING FOR OPERATION SAFETY 2.2 S ...................... 8 AFETY INSTRUCTION FOR REFRIGERANT 3. TRANSPORT ..............................9 3.1H ..............................9 ANDLING 4. INSTALLATION AND COMMISSIONING ..................... 10 4.1D ......................
  • Page 4 Service Manual_2018-V2.0 8.6 E ......................30 VAPORATOR AND EFROST SYSTEM 8.7 C ........................... 31 OMPRESSOR CASE 8.8 D ........................... 36 ISPLAY CONTROL BOARD 8.9 M ..........................37 AIN CONTROL BOARD 8.10 B ) ..........................37 AR COUNTER 8.11 W ........................... 37 ATER DISPENSER 8.12I ..............................

  • Page 5: Significant Update Notes(None)

    Service Manual_2018-V2.0 1. Significant update notes(None)

  • Page 6: Safety Warning Code

    Service Manual_2018-V2.0 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.
  • Page 7 Service Manual_2018-V2.0 CONNECTING ELECTRICITY Electrical Shock Hazard. Failure to follow these instructions can Plug into a grounded 3-prong outlet. result in death, fire, or electrical shock. Do not remove the ground prong. Do not use an adapter. WARNING Electric Shock Hazard Failure to follow these instructions can result in electric shock, fire, or death.

  • Page 8: Safety Instruction For Refrigerant

    Service Manual_2018-V2.0 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.

  • Page 9: Transport

    Service Manual_2018-V2.0 3. Transport 3.1Handling 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 move into house for placement 3)After moving it to appropriate location, wait for 2 hours before power on.

  • Page 10: Installation And Commissioning

    Service Manual_2018-V2.0 4. Installation and commissioning 4.1Door Disassembly and Assembly The refrigerator door needs to be dismantled if it cannot enter the room in the whole. 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.
  • Page 11 Service Manual_2018-V2.0 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 cross screwdriver or socket spanner to remove the 2 pcs M5 screws by anticlockwise, and then remove the upper hinge.
  • Page 12 Service Manual_2018-V2.0 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) 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.

  • Page 13: Installation Location

    Service Manual_2018-V2.0 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 5 pcs screws. 4.2Installation location Installation location Location that is easy for ventilation shall be chosen to...

  • Page 14: Left Or Right Open Door Reversal(None)

    Service Manual_2018-V2.0 If the refrigerator cannot be placed steadily, adjust the footing to level it. 4.4Left or right open door reversal(None) Door reversal Door reversal None 4.5Installation of handle(None) Installation of handle Installation of handle None 4.6Installation of door lock（None） Installation of door lock Installation of door lock None...
  • Page 15 Service Manual_2018-V2.0 Use screwdriver to remove the 5 pcs screws, and then remove the upper hinge cover. Use screwdriver to loosen the 2 pcs screws, right and left adjust the upper hinge to make door aperture be homogeneity. Put the hinge cover on suitable position, and then use the screwdriver to fix the 5 pcs screws.

  • Page 16: Product Configuration And Dimension

    Service Manual_2018-V2.0 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 1door rack 11LED lighting 2ice tank 12door rack 3shelf 13shelf...

  • Page 17: External Dimension

    Service Manual_2018-V2.0 5.2 External dimension HC-970WE Description Code Size (mm) Height to Top of Case 1775 Width Depth w/Handle Depth w/Handle Depth (Door open 90 deg. w) 1273 Width (Door open 90 deg. w) 1039 Depth (Door open 135 deg. w) 1226 Width (Door open 135 deg.

  • Page 18: Location Of S/N

    Service Manual_2018-V2.0 5.3Location of S/N Some products also have S/N on the lower part of the right side of the Cabinet.

  • Page 19: Product Specification

    Service Manual_2018-V2.0 6. Product specification 6.1Electrical parameters Applicable Models HC-957WEN UR-BCD746WE-DT Product Name Product Code 22031050000741 Item Specification Specification Refrigerant R600a Compressor DZ120V1U Starter(PTC) None Overload protector(OLP) B110-105 Integrate PTC+OLP None HGFM/220-240V(50/60)Hz Variable frequency driver board Capacitor None Power filter Have Power reactor None...

  • Page 20: Cooling Temperature Setting Range

    Service Manual_2018-V2.0 6.2Cooling temperature setting range Compartment The highest ( Lowest ( Freezing Refrigerating 6.3Defrosting parts electronic type Item Specification Defrosting sensor NTC B3839 Fuse 77℃ Defrost heater in freezing chamber 115V 240W 6.4Circuit diagram F: Freezer; R: Refrigerator; FD: Freezer Defrost; C: Condensation;.A:ambient temperature 6.5Main control board structure diagram...

  • Page 21: Ice Maker Control Board Structure Diagram

    Service Manual_2018-V2.0 6.5.1 Ice maker control board structure diagram 6.6Electric exchange valve (NONE) Model Specification None None...

  • Page 22: Water Valve

    Service Manual_2018-V2.0 6.7Water valve Model Specification 115V 20W（Compressor case） 12V 360mA（refrigerating chamber）...

  • Page 23: Refrigerating Piping System And Circulating Route Of Cooling Air

    Service Manual_2018-V2.0 7.Refrigerating piping system and circulating route of cooling air 7.1 Refrigerating piping system ❶Compressor→❷Condenser→❸Anti-water condensed pipe→❹Drier→❺Capillary Tube→❻Evaporator→❼Suction Pipe→❽Suction connection Pipe→❶Compressor 7.2Special soldering position (None)

  • Page 24: Circulating Route Of Cooling Air

    Service Manual_2018-V2.0 7.3Circulating route of cooling air...

  • Page 25: Dismantling Of Parts

    Service Manual_2018-V2.0 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 ① out of door liner; Door tray While squeezing it inward, lift up the baffle and take it out from refrigerator liner.

  • Page 26: Light System

    Service Manual_2018-V2.0 Freezer Drawer The drawer is located at the freezing chambers; 1)Pull the drawer out completely; 2)Lift it up slightly and take it out from the refrigerator. 8.3 Light system Light Light of the refrigerating 1）Use vacuum cap to pull the lampshade outwards 2）Push away LED light panel with your hand along the arrow direction shown in the picture and separate LED light panel from the hook;...

  • Page 27: Air Duct Components In Refrigerating Chamber And Fan Motor

    Service Manual_2018-V2.0 Pull the terminal,remove the light switch. Fresh light Fresh light None 8.4 Air duct components in refrigerating chamber and fan motor Air duct components refrigeratingchamber 1）Remove by cross screwdriver the screws on the positions shown in the picture anticlockwise. Remove the filter along the arrow direction, then remove the decoration cover of refrigerator air duct until air duct decoration cover completely falls off from refrigerator...

  • Page 28: Air Duct Components In Freezing Chamber And Fan Motor

    Service Manual_2018-V2.0 Remove connecting terminals of ventilation door by hands, catch hold of air duct foam in refrigerating chamber and pull it towards the arrow direction shown in the picture until air duct foam is separated from refrigerator body, and take out refrigerating air duct foam. Fan motor of air duct None Electric damper...
  • Page 29 Service Manual_2018-V2.0 2）As shown in the right picture, catch hold of upper part of freezing air duct as shown in the picture, pull it outward along the arrow direction with strength until air duct is separated from refrigerator body, remove the connecting harness between fan and refrigerator body, and take down freezing air duct.

  • Page 30: Evaporator And Defrost System

    Service Manual_2018-V2.0 8.6 Evaporator and Defrost system Evaporator in freezing chamber Evaporator in freezing chamber 1）Remove the air duct components in freezing chamber. 2）Disconnect all connectors. 3）Remove the welding on inlet and outlet tubes. 4）Remove two screws which are used to fix the evaporator and remove the evaporator.

  • Page 31: Compressor Case

    Service Manual_2018-V2.0 Components on the evaporator Defrosting fuse None Defrost sensor None Defrost heater None 8.7 Compressor case Rear cover 1）Remove by cross screwdriver the screws fixing back cover plate of compressor chamber anticlockwise 2）Take the back cover plate of compressor chamber upward.
  • Page 32 Service Manual_2018-V2.0 4-1）Remove the screws(for some models) -Two screws outside -One screw inside 4-2）Remove the metal clamp(for some models) -Disassembly the metal clamp that is fix the electric appliance shield 5）Remove the clipping strip Slowly pull it out 6）Remove the protective cover -Pry the protective cover slowly from the upper part, -Pull it out and remove it.
  • Page 33 Service Manual_2018-V2.0 7）Remove the starter and protector Unplug the starter and protector (you can use a screwdriver to pry it slowly) 8）Loosen the screw of the compressor bottom plate,remove the floor together with the compressor from the box. 9）Use the wrench to remove the bolts by steps❹❺❻❼, replace the compressor and reverse process can complete installation.
  • Page 34 Service Manual_2018-V2.0 11）Replace the compressorand welding the compressor pipeline.-❿Welding the process pipeline.-⓫Welding the low-pressure muffler.-⓬Welding the high-pressure exhaust pipe. 12）Replace thefilter, Cu-Fe tubes welding ⓭used Ag welding rod, Cu-Cu tubes welding ⓮ used Cu welding rod. 13）Vacuum system,The degree of vacuum below 6Pa. 14）Perfusion refrigerant.
  • Page 35 Service Manual_2018-V2.0 1)Unplug the wiring connector by pressing the terminal lock 2) Loosen the screw, then pull out the fan bracket towards the direction what the arrows indicate. Back hanging wire tube condensor None Piping system in the compressor case ❶Suction Pipe ❺Compressor ❷Capillary Tube...

  • Page 36: Display Control Board

    Service Manual_2018-V2.0 2 ） Replace the drain tray, the reverse process can complete installation. 8.8 Display control board Display control board 1）Use vacuum cap to pull the control panel outwards 2） Disconnect the fast connector, then remove the control display control panel 1）...

  • Page 37: Main Control Board

    Service Manual_2018-V2.0 8.9 Main control board Have variable frequency driver board 1) remove the screw anticlockwise,then remove the PCB housing cover 2)Pull the lock of fast connector upwards,then disconnect the fast connector 3)Remove the screw anticlockwise,then remove the PCB and variable frequency driver board. 8.10 Bar counter(None) 8.11 Water dispenser Water dispenser...

  • Page 38: Ice Maker

    Service Manual_2018-V2.0 Disassembly and installation of water tank None 8.12Ice maker disassembly of ice maker 1) As shown in the photo, please up lift the ice storage box assembly and pull it out, then the ice storage box can be taken out. 2) Pull the ice tray assembly outwards forcefully, and disconnect the wiring connector, then the ice tray assembly can be taken out from refrigerator.

  • Page 39: Water Filter Component

    Service Manual_2018-V2.0 3) Use cross screwdriver (anticlockwise) to remove the 4 screws of motor of ice releasing, and disconnect the wiring connector,then the motor can be taken out from refrigerator. 8.13water filter component ADisassembly of filter built-in Shut off the water supply, squeeze the mounting box of filter by hands, and detach the lid from the box.
  • Page 40 Service Manual_2018-V2.0 Before using the dispenser, dispense at least 1 gallon of water to purge trapped air from the system after replacing the filter.

  • Page 41: Temperature Sensing System

    Service Manual_2018-V2.0 9.temperature sensing system 9.1 Position of sensors Position of sensors Have 5 sensors ① Ice machine sensor ② Sensor in freezing chamber ③ Defrost sensor freezing chamber ④ Ambient temperature or humidity sensor ⑤ Sensor in refrigerating chamber 9.2 Replacement of sensors Sensor in freezing chamber 1）To remove the sensor cover, you may squeeze it up...
  • Page 42 Service Manual_2018-V2.0 Ambient temperature and humidity sensor The sensor used for measurement of ambient temperature is located within upper hinge cover of refrigerating chamber door; Defrost sensor in freezing chamber The defrost sensor is located on top of the evaporator. 1）Disconnect the connector of defrost sensor 2）Cut off the band which fixes the sensor.

  • Page 43: Sensor Replacement

    Take out a new sensor to cut the head of sensor. (Spare parts code：11201007000795) Its technical specifications apply to all MIDEA refrigerators. Strip off the head of the sensor and connect it. Wrap the two wires together with insulation tape.

  • Page 44: Sensor Resistance(R/T)

    Service Manual_2018-V2.0 Disconnect the fast connector 9.4Sensor resistance(R/T) Tx(℃) R（KΩ） Tx(℃) R（KΩ） Tx(℃) R（KΩ） Tx(℃) R（KΩ） Tx(℃) R（KΩ） 33.81 14.31 6.495 3.141 1.617 31.85 13.55 6.175 2.999 1.55 30.01 12.83 5.873 2.865 1.486 28.29 12.16 5.587 2.737 1.426 26.68 11.52 5.315 2.616 1.368...

  • Page 45: Function And Operation

    Service Manual_2018-V2.0 10. Function and operation 10.1 Operation panel Icons Button ❶R/F temperature diagram ⒶR temperature adjustment ⒷF temperature adjustment ❷Quick freezing Ⓒ Filter time reset button Ⓓ Ice machine on/off ❸Quick refrigerating control button ❹ Filter time reset icon ⒺEnergy saving mode button ❺Ice machine on/off icon ⒻLock/unlock button...

  • Page 46: Temperature Control

    Service Manual_2018-V2.0 The fault code shall be displayed when there is a fault (cyclic display); the set temperature of the refrigerating chamber shall be displayed when there is no fault. 10.3Temperature control 1) Temperature adjustment of refrigerator compartment Press “REF. TEMP” button, then press “REF.TEMP” to adjust setting temperature, the setting temperature is changed circularly “7℃...

  • Page 47: Control Of Ice Maker

    Long press “Energy Saving” button for 3s to convert the temperature from Celsius to Fahrenheit and Back again. 10.8Fault code and solutions Note: midea full common fault code, combined with the actual product display reference. Fault code Fault content Steps for maintenance methods...
  • Page 48 Service Manual_2018-V2.0 Step 4: Replace electrical wiring main harness Step 1: Check whether the terminal of temperature sensor in main control board is well stuck, pull out the terminal and re-stick it in place Step 2: Check to see if there’re foreign matters on the Temperature sensor fault in terminal.
  • Page 49 Service Manual_2018-V2.0 Step 1: Check whether the terminal of defrost sensor in main control board is well stuck, pull out the terminal and re-stick it in place Step 2: Check to see if there’re foreign matters on the Defrost sensor fault in terminal.

  • Page 50: Defrosting Function

    Service Manual_2018-V2.0 Step 1:Check whether the terminal of ice makerin main control Ice making board is well stuck, pull out the terminal and re-stick it in place machine off-ice Step 2: Check to see if there’re foreign matters on the terminal fault Step 3: Check whether the terminal of ice maker is well Distributor control...

  • Page 51: Compressor

    Service Manual_2018-V2.0 11. Compressor 11.1Compressor on and off Control specifications 1.1 When one of the following conditions is met, the compressor stops: 1) Tr ≤ Trt； 2) The compressor runs continuously for more than 3 hours (Stop 5 minutes); 1.2 When all the following conditions are met, the compressor starts up: 1) Tr ≥Trk;...

  • Page 52: Troubleshooting Method

    Service Manual_2018-V2.0 12. Troubleshooting Method 12.1 No cooling(Air cooling-Electronic)

  • Page 53: No Working Of Compressor

    Service Manual_2018-V2.0 12.2 No working of compressor 12.3 Inside frosting, no defrosting...

  • Page 54: Inside Frosting, No Defrosting-Maintenance Guidelines

    Service Manual_2018-V2.0 12.4 Inside frosting, no defrosting-Maintenance guidelines...

  • Page 55: Light Is Not On

    Service Manual_2018-V2.0 12.5 Light is not on 12.6Fan failure...

  • Page 56: Defective Defrost Circuit

    Service Manual_2018-V2.0 12.7Defective defrost circuit 12.8Noise...

  • Page 57: Air Duct Not Operated(Electronically)

    Service Manual_2018-V2.0 12.9Air duct not operated(electronically) 12.10ice maker not make ice Keep pressing the “FRE” and “Energy Saving” button for 3s, enter/exit EYE. Erter EYE, the display digital of ice machine mode will blink, and water gets into ice machine after turning over the ice twice.

  • Page 58: Figures And Details Of Repair Parts

    Service Manual_2018-V2.0 13. Figures and details of repair parts See this section in the TSP.
  • Page 59 MIDEA appliances after sales website tsp.midea.com For more information about Midea appliances after sales, please visit the tsp.midea.com For more information about the service manual, please visit the tsp.midea.com For more information about the EV and SBOM, please visit the...

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