Midea UL-BD386WE-SQ, Service Manual

Page 1: ...1010000120 UL BD386WE SQ 22031010000112 UL BD386WE FQ 22031010000107 The picture is only for reference and specific appearance and configuration are subject to the real product Prepared by R D Zheng Qiang Reviewed by QA Wang Tao SVC Zhang Kun Approved by R D Geng Xiuhua SVC Guang Taoshuai ...

Page 2: ... 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 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 Mi...

Page 3: ... SHELVES NONE 12 4 TERMS 12 4 1 DEFINITION OF MODEL NONE 12 4 2LOCATION OF NAMEPLATE 12 5 PRODUCT SPECIFICATION 13 5 1 TYPESPECIFICATION NONE 13 5 2 ELECTRICAL PARAMETERS 13 5 3INSIDE TEMPERATURE 13 5 4DEFROSTING PARTS 14 5 5CIRCUIT DIAGRAM 14 6 INTERNAL VIEW AND DIMENSION 16 6 1MAIN PARTS AND THEIR NAMES 16 6 2EXTERNAL DIMENSION 16 7 REFRIGERATING PIPING SYSTEM AND CIRCULATING ROUTE OF COOLING AI...

Page 4: ...ERATURE TEST CIRCUIT 31 10 4FAN MOTOR CIRCUIT OF THE FREEZING CHAMBER 32 10 5REFRIGERATOR FAN MOTOR CIRCUIT NONE 33 10 6CONDENSING FAN MOTOR CIRCUIT NONE 33 10 7DAMPER MOTOR CIRCUIT NONE 33 10 8RESISTANCE VALUE OF THE SENSOR R T 33 11 TROUBLESHOOTING METHOD 34 11 1 NO REFRIGERATION 34 11 2 COMPRESSOR FAILURE 35 11 3 DEFROSTING IS NOT WORKING 36 11 4 FAN IN THE FREEZING CHAMBER IS ABNORMAL 36 11 5 ...

Page 5: ...Service manual 2016 12 5 42 1 Safety Warning Code 1 1Warning for operation safety ...

Page 6: ...Service manual 2016 12 6 42 ...

Page 7: ...Service manual 2016 12 7 42 ...

Page 8: ...Service manual 2016 12 8 42 1 2Safety instruction for refrigerant ...

Page 9: ...ided 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 Open delay alarm function ...

Page 10: ...ftermovingittoappropriatelocation waitfor2hoursbe forepoweron 3 2Disassembly None The refrigerator door needs to be dismantled if it cannot enter the room in the whole 3 3 Installation location Location that is easy for ventilation shall be chosen to facilitate heat dissipation enhance its performance and reduce the energy consumption 3 4 Leveling of the refrigerator If the refrigerator cannot be ...

Page 11: ...Service manual 2016 12 11 42 3 5Change the door opening direction None 3 6 Installation of handle ...

Page 12: ...oor 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 The picture is only for reference and specific appearance and configuration are subject to the real product ...

Page 13: ...nding resistance of compressor wiring terminal Rmc 10 20Ω Rsc 30 50Ω Rms Rmc Rsc Rmc 10 20Ω Rsc 30 50Ω Rms Rmc Rsc Rmc 10 20Ω Rsc 30 50Ω Rms Rmc Rsc Variable frequency driver board Motor Fan motor of the freezing chamber DC12V 4W DC12V 4W DC12V 4W Ventilation door of the refrigerating chamber Condensation fan Lights inside the refrigerator Lights inside the freezing chamber 240V 40W 125V 40W 125V ...

Page 14: ...l defrosting period Temperature is lower than 0 o C 6 24 hours Defrosting sensor NTC B3839 Thermal fuse Can t be restored 77 Defrosting heater in freezing chamber Steel pipe 230V 180W 115V 180W 5 5Circuit diagram SO BD386WE UT_22031010000120 UL BD386WE SQ_22031010000112 UL BD386WE FQ_22031010000107 ...

Page 15: ...Service manual 2016 12 15 42 ...

Page 16: ...configuration are subject to the real product Freezing chamber Refrigerator chamber 1 Air duct front plate 2 Steel wire storage rack big 3 Air duct assembly of freezer 4 Steel wire storage rack small 5 Steel wire drawer 6 Leveling feet 7 Freezer door tray 8 Reversible adjustable shelf 9 Refrigerator door tray 6 2External dimension Front view Side view ...

Page 17: ...Service manual 2016 12 17 42 Down view Open Door Maximum open angle of door 135o ...

Page 18: ...Service manual 2016 12 18 42 The picture is only for reference and specific appearance and configuration are subject to the real product ...

Page 19: ...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 ...

Page 20: ...Service manual 2016 12 20 42 7 2Circulating route of cooling air The picture is only for reference and specific appearance and configuration are subject to the real product ...

Page 21: ...oor 2 Take the door seal out of door liner Door tray Lift up the bottle frame and take it out from the door liner of the refrigerator rollover beam None 8 2Parts inside the refrigerator Shelves 1 Pull out the partition plate completely 2 Lift it up and take it out from the refrigerator Ice tray None Refrigerator tray None Drawer None 8 3Light system Light ...

Page 22: ...Loosen the hook with small normal screwdriver and pull out the switch until the wire connector reveals 8 4Air duct and fan motor Air duct components in freezing chamber All accessories in the freezing chamber should be dismantled before removing the air duct components 1 Remove 2 screws on the cover plate of the freezing air duct using a cross screwdriver 2 Pull out the connector terminal of the f...

Page 23: ...emperature sensing system 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 Components on the evaporator Fuse The fuse is located on top of the evaporator 1 connect the fuse connector 2 Cut off the band which...

Page 24: ... off the band which fixes the defrost heater 3 Take off the defrost heater from the evaporator Don t break the welding of the evaporator in case that only the defrost heater needs to be replaced Ambient temperature sensor Ambient temperature sensor None Ambient temperature sensor None The ambient temperature sensor is placed in the display panel it send the signal to the MPU Freezer sensor Freezer...

Page 25: ...sition pipeleft condenseranti condensation pipedischarge and evaporating pipe Starter and protector of the compressor 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 ...

Page 26: ...or change the display PCB the reverse operation is for assembly main control panel 1 Use cross screwdriver to remove the 2 screws to get the main PCB assembly 2 Use slotted screwdriver to prize up the cover of main PCB box slightly 3 Use cross screwdriver remove the 1 pc screw of main PCB and dismantle the main PCB 4 Unplug the wiring connector change the main PCB the reverse operation is for asse...

Page 27: ...Service manual 2016 12 27 42 8 10 Ice maker None Disassembly and installation of ice maker None Disassembly and installation of water system None Disassembly and installation ice machine sensor None ...

Page 28: ...er on the refrigerator the display panel lighten for 3 seconds and the start up tone rings at same time if it is the 1st time to power on the refrigerator the default temperature setting is 18 Normal display Digital display zone if there is any failure happen it will display the error code if no it displays the setting temperature Display control normal working mode inspection mode If in locked st...

Page 29: ... working in quick freeze mode the compressor switch on the default time is 6 hours 3 Exit condition 1 The quick freeze mode will exit automatically after works for 6 hours or 48 hours 2 Press quick freeze button to exit quick freeze mode 3 when operate the temperature adjustment button the quick freeze mode will exit If the quick freeze mode exit the product will work according to last temperature...

Page 30: ...ory defrost the display panel will display figure 3 If the defrosting sensor failure happen the heater will work 20 minutes then turn off If the defrosting sensor failure happen during the defrosting the heater only work 3 minutes after that then turn off 2 Exit exit manually under the state of mandatory defrost press both button both and for 3 seconds it will exit the mandatory defrost after 3 mi...

Page 31: ...f inside temperature 10 2Door trip test circuit Current of strong electricity of lamp will be output onto terminal of weak currnet side by PC817 opto isolator then reduced voltage by R10 and rectified by D7 and D8 When door is opened the circuit of switch is closed and the PWM wave is detected by the terminal of weak current and main PCB receive the signal When door is closed the circuit of switch...

Page 32: ...ormula for the sensor Sampling voltage reference voltage R1 RNTC R1 AD value reference AD value R1 RNTC R1 The reference voltage is 5V RNTC is the resistance value of the sensor R1 is R31 R32 R33 in schematic diagram that is 5 1K 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 o...

Page 33: ...2 865 32 1 486 27 28 29 12 12 16 3 5 587 18 2 737 33 1 426 26 26 68 11 11 52 4 5 315 19 2 616 34 1 368 25 25 17 10 10 92 5 5 06 20 2 501 35 1 312 24 23 76 9 10 35 6 4 818 21 2 391 36 1 259 23 22 43 8 9 82 7 4 589 22 2 287 37 1 209 22 21 18 7 9 316 8 4 372 23 2 188 38 1 161 21 20 01 6 8 841 9 4 167 24 2 094 39 1 115 20 18 9 5 8 392 10 3 972 25 2 005 40 1 071 19 17 87 4 7 968 11 3 788 26 1 919 41 1 ...

Page 34: ...Service manual 2016 12 34 42 11 Troubleshooting Method 11 1 No refrigeration ...

Page 35: ...Service manual 2016 12 35 42 11 2 Compressor failure ...

Page 36: ...Service manual 2016 12 36 42 11 3 Defrosting is not working 11 4 Fan in the freezing chamber is abnormal Refer to this method for other fans ...

Page 37: ...er is abnormal None 11 6 Lights inside the refrigerator don t light up 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 ...

Page 38: ...ling and equipment and material Tooling No Name Photo Main Usage 1 Phillips screwdriver screw assemble and disassemble 2 slotted screwdriver scraper screw and rivet assemble and disassemble 3 Socket spanner 5 16 hinge and compressor screw assemble and disassemble ...

Page 39: ...ver disassemble 5 Allen wrench 2 8 4mm handle assemble and disassemble 6 Vise grip pliers sealing process tube 7 Pipe cutter pipe cutting 8 Knife assistive tool 9 Nipper pliers assistive tool 10 Capillary tube scissors Shear capillary Equipment No Name Photo Main Usage ...

Page 40: ...ure nitrogen with piezometer pipe and cooling system condenser evaporator etc impurities clean 4 Soldering gun heating and welding 5 Quick coupling connection process pipeline vacuumorchargerefriger antwillbeused 6 hand leak detector welding point leakage detect if no use soap suds material No Name Photo Main Usage ...

Page 41: ...1 Process pipeline Chargetherefrigerant 2 Dry filter Involving a system failure to be replaced 3 Copper welding rod tube welding 4 Refrigerant gas Add refrigerant to the system 5 Sealing tape door fixing for reversible door option ...

Page 42: ...gerators 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 ...