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Service Manual
Applicable Models
UR-BCD280WE-DQ
UR-BCD280WE-DQ
UR-BCD280WE-SQ
(The picture is only for reference, and specific appearance and configuration are subject to the real
Reviewed by
Approved by
product)
Prepared by
SVC:Guang Taoshuai
Service Manual, 2016-12
Model No.
22031020000145
22031020001522
22031020000146
R&D:Qin Chunyu
QA:Li Jiangli
SVC:Zhang Kun
R&D:Geng Xiuhua
1 / 46

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Summary of Contents for Midea UR-BCD280WE-DQ

  • Page 1 Service Manual, 2016-12 Service Manual Applicable Models Model No. UR-BCD280WE-DQ 22031020000145 UR-BCD280WE-DQ 22031020001522 UR-BCD280WE-SQ 22031020000146 (The picture is only for reference, and specific appearance and configuration are subject to the real product) Prepared by R&D:Qin Chunyu QA:Li Jiangli Reviewed by SVC:Zhang Kun R&D:Geng Xiuhua...
  • Page 2 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. 2 / 46...
  • Page 3: Table Of Contents

    Service Manual, 2016-12 Contents 1.SAFETY WARNING CODE ......................5 ....................5 1.1W ARNING FOR OPERATION SAFETY ..................8 1.2S AFETY INSTRUCTION FOR REFRIGERANT 2.DESCRIPTION FOR PRODUCT FEATURES ................9 3.INSTALLATION AND COMMISSIONING ................10 ............................. 10 3.1H ANDLING ) ........................10 3.2D ISASSEMBLY ......................
  • Page 4 Service Manual, 2016-12 ) ........................27 8.8 B AR COUNTER ) ......................27 8.9 W ATER DISPENSER ) ........................28 8.10 I CE MAKER ......................29 9. F UNCTION AND OPERATION ......................... 29 9.1 O PERATION PANEL ............................29 9.2 B UTTON ...........................
  • Page 5: Safety Warning Code

    Service Manual, 2016-12 1.Safety Warning Code 1.1Warning for operation safety 5 / 46...
  • Page 6 Service Manual, 2016-12 6 / 46...
  • Page 7 Service Manual, 2016-12 7 / 46...
  • Page 8: Safety Instruction For Refrigerant

    Service Manual, 2016-12 1.2Safety instruction for refrigerant 8 / 46...
  • Page 9: Description For Product Features

    Service Manual, 2016-12 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) Full air-cooling and frost-free design 2) Electronic temperature control system with more accurate temperature control. 3)...
  • Page 10: Installation And Commissioning

    Service Manual, 2016-12 3.Installation and commissioning 3.1Handling 1) Protect the refrigerator in moving it Same as shown as left photo, please move it by hand cart with cushion 2) Removeallpackingmaterialsandbottomcushion,then moveintohouseforplacement 3) After moving it to appropriate location, wait for 2 h ours before power on.
  • Page 11: Leveling Of The Refrigerator

    Service Manual, 2016-12 3.4 Leveling of the refrigerator If the refrigerator cannot be placed steadily, adjust the footing to level it. 3.5Change the door opening direction 1. Remove the hinge cover. Unscrew and remove the top hinge. 2. Lift the freezer door up and away from the appliance.
  • Page 12 Service Manual, 2016-12 4Remove 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.
  • Page 13: Installation Of Handle(None)

    Service Manual, 2016-12 3.6 Installation of handle(None) 3.7 Installation of door lock(None) 3.8 Adjustment to level the door(None) 3.9 Adjustment to shelves(None) 4.Terms 4.1 Definition of model(None) 4.2Location of nameplate Label (The picture is only for reference, and specific appearance and configuration are subject to the real product) 13 / 46...
  • Page 14: Product Specification

    Service Manual, 2016-12 5.Product specification 5.1 type specification(None) 5.2 Electrical parameters Product Name UR-BCD280WE-DQ UR-BCD280WE-DQ UR-BCD280WE-SQ 22031020000145 22031020001522 22031020000146 Product Code Name Item Type Specification Specification Specification EZ80E1C EZ80H1A-USCL EZ80H1Z Compressor QPE2-A4R7MD3 Starter QP2-4R7 QP2-4R7 DRB31T61A1 Overload protector DRB31T61A1 DRB31T61A1 Rmc:10-20Ω...
  • Page 15: Circuit Diagram

    Service Manual, 2016-12 Thermal fuse Cant be restored Steel pipe 115V/200W Defrosting heater in freezing chamber 5.5Circuit diagram 15 / 46...
  • Page 16: Internal View And Dimension

    Service Manual, 2016-12 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.Air duct components in freezing chamber 7.Steel wire shelf in freezing chamber 2.Air duct components in refrigerating 8.Bottle frame in freezing chamber chamber...
  • Page 17 Service Manual, 2016-12 Down view Open Door Maximum open angle of door(135 17 / 46...
  • Page 18 Service Manual, 2016-12 (The picture is only for reference, and specific appearance and configuration are subject to the real product) 18 / 46...
  • Page 19: Refrigerating Piping System And Circulating Route Of Cooling Air

    Service Manual, 2016-12 7.Refrigerating piping system and circulating route of cooling air 7.1 Refrigerating piping system 1Compressor→2Right condenser→3Anti-condensation tube→4Left condenser→5Dry filter→6Capillary tube→7Evaporator→8Suction tube→1Compressor (The picture is only for reference, and specific appearance and configuration are subject to the real product) 19 / 46...
  • Page 20: Circulating Route Of Cooling Air

    Service Manual, 2016-12 7.2Circulating route of cooling air (The picture is only for reference, and specific appearance and configuration are subject to the real product) 20 / 46...
  • Page 21: Dismantling Of Parts

    Service Manual, 2016-12 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 Lift up the bottle frame and take it out from the door liner of the refrigerator.
  • Page 22: Light System

    Service Manual, 2016-12 8.3Light system Light Light of the refrigerating chamber is located upper chamber 1) Remove the lamp cover 2) Remove the bulb Light switch There is a light switch on the side wall of the refrigerating chamber. 1) Loosen the hook with small normal screwdriver and pull out the switch until the wire connector reveals.
  • Page 23: Evaporator And Temperature Sensing System

    Service Manual, 2016-12 1) use screwdriver to remove the 2 screws on the back of Freezer air duct,then remove rhe front cover,fan motor assembly can be taken out 2) seperate the fan blade from fan motor(pull forcibly) 3) use screwdriver to remove the screw, then seperate the bracket from fan motor 4)...
  • Page 24 Service Manual, 2016-12 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. Components on the evaporator Fuse The fuse is located on top of the evaporator...
  • Page 25: Compressor Case

    Service Manual, 2016-12 Before remove the sensor, the freezer duct assembly should be removed 1) Remove the air duct assembly from the freezer. 2) Remove the sensor. Ambient temperature sensor None Freezer sensor None 8.6Compressor case Rear cover and compressor case None Condenser fan moto None...
  • Page 26: Display And Main Control Panel

    Service Manual, 2016-12 1. Remove the screws 1) Two screws outside 2) One screw inside 2. Remove the clipping strip Slowly pull it out 3. Remove the protective cover 1)Pry the protective cover slowly from the upper part, 2)Pull it out and remove it. 4.
  • Page 27: Bar Counter(None)

    Service Manual, 2016-12 master control board and installation box components; 5) Pry open the buckle of the PCB installation box with a straight screwdriver to see the PCB board; 6) Remove 2 screws using a cross screwdriver to remove the master control board; 7)...
  • Page 28: Ice Maker(None)

    Service Manual, 2016-12 Disassembly and installation of water tank None Ice maker(None) 8.10 Disassembly and installation of ice maker None Disassembly and installation of water system None Disassembly and installation ice machine sensor None 28 / 46...
  • Page 29: Function And Operation

    Service Manual, 2016-12 9. Function and operation 9.1 Operation panel See figure below for buttons and display arrangement of human-machine interface: 1 Gear 2 Gear 3 Gear 4 Gear 5 Gear Gear set button 9.2 Button SET Gear set button 9.3 Display screen 1Gear 2Gear...
  • Page 30: Control Of Standby Function

    Service Manual, 2016-12 9.6 Control of standby function When the refrigerator is working, keep pressing the gear setting button “SET” for 3 seconds (takes effect when releasing the button), the refrigerator will be in standby mode, the standby indicator will light up and all loads will stop working; When the refrigerator is in standby mode, press the gear setting button “SET”, the refrigerator will enter normal operation mode, the standby indicator will light off and the refrigerator will operate normally;...
  • Page 31: Test Mode

    Service Manual, 2016-12 9.10Test mode Test Test items Testing Method Expected result module LED indicators on Gear 1, 2, 3, 4 and 5 Keep pressing the SET button light up and flicker in the frequency of 0.5s, for 15 seconds and release Enter Test then the refrigerator enters into test mode Mode...
  • Page 32: Circuit Description

    Service Manual, 2016-12 10.Circuit description 10.1 Power Supply The AC input power is reduced in voltage by SMPS control chip and filtered off wave by the inductance-capacitance filter, then output the DC 12V power which will mainly power the relay that controls strong current.
  • Page 33 Service Manual, 2016-12 The characteristic that resistance value reduces as the temperature increases is deemed to have negative slope or negative temperature coefficient (NTC), and such thermistor is called as NTC thermistor. The resistance value changes sensitively with temperature and typically changes 7% ~ 3% per degree centigrade.
  • Page 34: Fan Motor Circuit Of The Freezing Chamber

    Service Manual, 2016-12 10.4Fan motor circuit of the freezing chamber The fan in the freezing chamber is running when the compressor is operating. Check 12V and FAN to see if there is a voltage of 12V. When in normal operation, the fan is in low level and the voltage between 12V and FAN is more than 11V.
  • Page 35 Service Manual, 2016-12 22.43 9.82 4.589 2.287 1.209 21.18 9.316 4.372 2.188 1.161 20.01 8.841 4.167 2.094 1.115 18.9 8.392 3.972 2.005 1.071 17.87 7.968 3.788 1.919 1.029 16.9 7.568 3.613 1.838 0.9885 15.98 7.19 3.447 1.761 0.9506 15.12 6.833 3.29 1.687 0.914...
  • Page 36: Troubleshooting Method

    Service Manual, 2016-12 11.Troubleshooting Method 11.1 No refrigeration 36 / 46...
  • Page 37 Service Manual, 2016-12 37 / 46...
  • Page 38: Compressor Failure

    Service Manual, 2016-12 11.2 Compressor failure 38 / 46...
  • Page 39: Defrosting Is Not Working

    Service Manual, 2016-12 11.3 Defrosting is not working 39 / 46...
  • Page 40: Fan In The Freezing Chamber Is Abnormal

    Service Manual, 2016-12 11.4 Fan in the freezing chamber is abnormal Refer to this method for other fans. 40 / 46...
  • Page 41: Damper Is Abnormal(None)11.6 Lights Inside The Refrigerator Dont Light Up

    Service Manual, 2016-12 11.5 Damper is abnormal(None)11.6 Lights inside the refrigerator dont light up 41 / 46...
  • Page 42: Figures And Details Of Repair Parts(Documents Are Provided Separately)

    Service Manual, 2016-12 12. Figures and details of repair parts( Documents are provided separately 12.1 Figure 12.2 List of parts and components 13Appendix: 13.1Electrical Schematic Diagram (Model:***) 13.2refrigerator maintenance tooling and equipment and material Tooling Name Photo Main Usage Phillips screwdriver screw assemble and disassemble 42 / 46...
  • Page 43 Service Manual, 2016-12 screw and rivet assemble and slotted screwdriver/scraper disassemble hinge and compressor screw Socket spanner 5/16″ assemble and disassemble display panel and air duct Sucker cover disassemble handle assemble and Allen wrench(2.8~4mm) disassemble Vise grip pliers sealing process tube Pipe cutter pipe cutting Knife...
  • Page 44 Service Manual, 2016-12 Nipper pliers assistive tool Capillary tube scissors Shear capillary Equipment Name Photo Main Usage Vacuum pump vacuum pumping Electronic scale weighing refrigerant/gas pipe and cooling High pressure nitrogen with system(condenser, evaporator, piezometer etc) impurities clean Soldering gun heating and welding 44 / 46...
  • Page 45 Service Manual, 2016-12 connection process Quick coupling pipeline,vacuum or charge refrig erant will be used. welding point leakage detect, if hand leak detector no, use soap-suds material Name Photo Main Usage Process pipeline Chargetherefrigerant Involving a system failure to be Dry filter replaced Copper welding rod...
  • Page 46 Service Manual, 2016-12 Midea Refrigerators If you need to get detailed technical information from the manufacturer, please contact: xxx@midea.com Refrigeration Division Overseas Sales Company Address: No. 176, Jinxiu Avenue, Economic-Technological Development Area, Hefei, Anhui, China 46 / 46...

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