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Service Manual

, 2016-12

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46

7.Refrigerating piping system and circulating route of cooling air

7.1

Refrigerating piping system

1Compressor



2Exhaust transition pipe



3Left condenser



4Anti-condensationg tube



5Right

condenser



6Dry filter



7Capillary tube



8Evaporator



9Return pipe



10Return transition pipe

(The picture is only for reference, and specific appearance and configuration are subject to the real

product)

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Содержание 22031020000054

Страница 1: ...1020000054 UR BCD283WE SQ 22031020000057 CE BCD283WE MT 22031020000060 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 ...

Страница 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...

Страница 3: ... SHELVES NONE 13 4 TERMS 14 4 1 DEFINITION OF MODEL NONE 14 4 2LOCATION OF NAMEPLATE 14 5 PRODUCT SPECIFICATION 15 5 1 TYPESPECIFICATION NONE 15 5 2 ELECTRICAL PARAMETERS 15 5 3INSIDE TEMPERATURE 16 5 4DEFROSTING PARTS 16 5 5CIRCUIT DIAGRAM 16 6 INTERNAL VIEW AND DIMENSION 17 6 1MAIN PARTS AND THEIR NAMES 17 6 2EXTERNAL DIMENSION 17 7 REFRIGERATING PIPING SYSTEM AND CIRCULATING ROUTE OF COOLING AI...

Страница 4: ...0 4FAN MOTOR CIRCUIT OF THE FREEZING CHAMBER 34 10 5REFRIGERATOR FAN MOTOR CIRCUIT NONE 34 10 6CONDENSING FAN MOTOR CIRCUIT NONE 34 10 7DAMPER MOTOR CIRCUIT NONE 34 10 8RESISTANCE VALUE OF THE SENSOR R T 34 11 TROUBLESHOOTING METHOD 36 11 1 NO REFRIGERATION 36 11 2 COMPRESSOR FAILURE 38 11 3 DEFROSTING IS NOT WORKING 39 11 4 FAN IN THE FREEZING CHAMBER IS ABNORMAL 40 11 5 DAMPER IS ABNORMAL NONE 1...

Страница 5: ...Service Manual 2016 12 5 46 1 Safety Warning Code 1 1Warning for operation safety ...

Страница 6: ...Service Manual 2016 12 6 46 ...

Страница 7: ...Service Manual 2016 12 7 46 ...

Страница 8: ...Service Manual 2016 12 8 46 1 2Safety instruction for refrigerant ...

Страница 9: ...y for reference and specific appearance and configuration are subject to the real product 1 Full air cooling and frost free design2 door is reversible for meeting the requirements of consumers who have different usage habit 3 Gallon bottle 2L Cola bottle can be placed on 4 with the structure of top refrigerator and bottom freezer ...

Страница 10: ...ialsandbottomcushion then moveintohouseforplacement 3 Aftermovingittoappropriatelocation 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 ...

Страница 11: ...gerator and remove all food from the door shelves 2 Remove the left cover plate and the right top hinge cover then unscrew and remove the right top hinge Keep the screws to reuse 3 Lift the refrigerator door up and away from your refrigerator 4 Unscrew the two screws holding the center hinge remove the hinge then lift the freezer door up and away from your refrigerator Save the screws to reuse ...

Страница 12: ...m the accessory bag place the hinge assembly on proper position and fix it by two screws 7 Remove the door block from the bottom right side of the door and attach it to the other side 8 Remove the two hole caps from the left side where the center hinge will go and insert them into the other side 9 put the freezer door on the bottom hinge then assemble the middle hinge on the left side of middle be...

Страница 13: ...inge to the top of refrigerator Cover the hinge with the top left hinge cover and cover the screw holes on the right side of the top with the cover plate you previously removed 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 ...

Страница 14: ...ervice Manual 2016 12 14 46 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 Label ...

Страница 15: ...Y DRB25S61A1 TM149SFBYY DRB16S61A1BT40 135A61D3 Winding 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 BLDC DC12V 4W DC12V 4W DC12V 4W Ventilation door of the refrigerating chamber Condensation fan Lights inside the refrigerator Lig...

Страница 16: ...4 24 Refrigerating 9 1 Variable temperature 5 4Defrosting parts Defrosting period Initial defrosting period Normal defrosting period Temperature is lower than 0 o C 6 24 hours Defrosting sensor NTC B3839 Thermal fuse Can t be restored 77 o C Defrosting heater in freezing chamber Steel pipe 115V 200W 230V 180W 5 5Circuit diagram ...

Страница 17: ... real product Refrigerator chamber Freezer chamber 1 TEMP control panel 2 Glass shelve 3 control knob 4 Cover plate of crisper 5 Crisper for fruit and vegetable 6 steel wire shelf 7 steel wire drawer 8 Regulating foot 9 container 10 Small bottle frame in refrigerating chamber 11 Big bottle frame in refrigerating chamber 12 steel wire shelf 6 2External dimension Front view Side view ...

Страница 18: ...Service Manual 2016 12 18 46 Down view Open Door Maximum open angle of door 135 ...

Страница 19: ...Service Manual 2016 12 19 46 The picture is only for reference and specific appearance and configuration are subject to the real product ...

Страница 20: ...rigerating piping system 1Compressor 2Exhaust transition pipe 3Left condenser 4Anti condensationg tube 5Right condenser 6Dry filter 7Capillary tube 8Evaporator 9Return pipe 10Return transition pipe The picture is only for reference and specific appearance and configuration are subject to the real product ...

Страница 21: ...Service Manual 2016 12 21 46 7 2Circulating route of cooling air The picture is only for reference and specific appearance and configuration are subject to the real product ...

Страница 22: ...tor door 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 Refrigerator Fruit box cover Removethecrispercoverofref compartementaccordingto belowsteps 1 takeoutthecrisperfirstly 2 Pulloutthecrispercovercompletely Shelves ...

Страница 23: ...ht 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 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 3 screws on the cover plate of the free...

Страница 24: ...e front cover fan motor assembly can be taken out 2 seperatethefanbladefromfanmotor pullforcibly 3 use screwdrivertoremovethescrew thenseperatethebracketfromfanmotor 4 angethefanmotor thereverseoperationforassembly Damper assembly None 8 5Evaporator and temperature sensing system Evaporator in freezing chamber ...

Страница 25: ...se that only the fuse needs to be replaced Defrost sensor 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 3 Separate the sensor and the evaporator Dont break the welding of the evaporator in case that only the sensor needs to be replaced Defrost heater The defrost heater is located at bottom of the evapor...

Страница 26: ... 2 Remove the sensor Ambient temperature sensor None Freezer sensor None 8 6Compressor case Rear cover and compressor case None Condenser fan moto None Terminal box of the compressor None Standby condenser None Piping system in the compressor case Starter and protector of the compressor 1 Remove the screws 1 Two screws outside 2 One screw inside ...

Страница 27: ...l Display control board 1 Remove two screws from the refrigerating air duct with a cross screwdriver 2 Pull all connector terminals out of the refrigerating air duct to remove its components 3 Uncover the temperature control indication sticker on the cover plate of the air duct 4 Gently pry out the PCB installation box with a straight screwdriver to get the master control board and installation bo...

Страница 28: ... to prepare one for standby before replacement Main control board 1 use cross screwdriver to remove the two screws of main PCB cover 2 use slotted screwdriver to dismantle the PCB cover unplug the wiring connectors 3 use cross screwdriver to remove the screws of main PCB then change the main PCB The reverse operation is for assembly ...

Страница 29: ... installation of water tank None 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 9 Function and operation9 1Operation panel See figure below for buttons and display arrangement of human machine interface Button SET SET Gear set button Display screen 1 1Gear 2 2Gear 3 3Gear 4 4G...

Страница 30: ... the terminal Pull out the refrigerating sensor according to the method in described in Article 8 4 and then inspect the sensor against the resistance value table in 10 8 Step 3 Replace main control board Step 4 Replace electrical wiring main harness E5 Fault of F frost sensor Yes On of LED1 and LED3 simultaneously Step 1 Check whether the terminal CN3 is well stuck pull out the terminal and re st...

Страница 31: ...rs into test mode After entering into test mode if no button is pressed within 25 seconds then the refrigerator will exit the test mode and return to normal operation mode Select to enter into forced cooling mode Enter into test mode and press button for the first time LED indicators on Gear 1 2 and 3 light up and other LED indicators light off then the compressor and the fan will start working In...

Страница 32: ...igerating for 20 minutes The compressor fans are all on Exit out of self diagnosis 1 Stop self diagnosing and turn into normal mode 2 Failure occurs to the sensor during self diagnosis and exit out of self diagnosis mode 3 Set forced defrosting function during self diagnosis 10 Circuit description 10 1 Power Supply The AC input power is reduced in voltage by SMPS control chip and filtered off wave...

Страница 33: ...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 Sensor used in the refrigerator is NTC thermistor There is following computing formula for the sensor Sampling voltage reference voltage R1 RNTC R1 AD ...

Страница 34: ...10 5Refrigerator fan motor circuit None 10 6Condensing fan motor circuit None 10 7Damper motor circuit None 10 8Resistance value of the sensor R T Tx R KΩ Tx R KΩ Tx R KΩ Tx R KΩ Tx R KΩ 30 33 81 15 14 31 0 6 495 15 3 141 30 1 617 29 31 85 14 13 55 1 6 175 16 2 999 31 1 55 28 30 01 13 12 83 2 5 873 17 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 ...

Страница 35: ... 35 46 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 1 029 18 16 9 3 7 568 12 3 613 27 1 838 42 0 9885 17 15 98 2 7 19 13 3 447 28 1 761 43 0 9506 16 15 12 1 6 833 14 3 29 29 1 687 44 0 914 ...

Страница 36: ...Service Manual 2016 12 36 46 11 Troubleshooting Method 11 1 No refrigeration ...

Страница 37: ...Service Manual 2016 12 37 46 ...

Страница 38: ...Service Manual 2016 12 38 46 11 2 Compressor failure ...

Страница 39: ...Service Manual 2016 12 39 46 11 3 Defrosting is not working ...

Страница 40: ...Service Manual 2016 12 40 46 11 4 Fan in the freezing chamber is abnormal Refer to this method for other fans ...

Страница 41: ...Service Manual 2016 12 41 46 11 5 Damper is abnormal None 11 6 Lights inside the refrigerator don t light up ...

Страница 42: ...cuments are provided separately 12 1 Figure 12 2 List of parts and components 13Appendix 13 1Electrical Schematic Diagram 13 2refrigerator maintenance tooling and equipment and material Tooling No Name Photo Main Usage 1 Phillips screwdriver screw assemble and disassemble ...

Страница 43: ...nd disassemble 3 Socket spanner 5 16 hinge and compressor screw assemble and disassemble 4 Sucker display panel and air duct cover 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 ...

Страница 44: ...e scissors Shear capillary Equipment No Name Photo Main Usage 1 Vacuum pump vacuum pumping 2 Electronic scale weighing refrigerant gas 3 High pressure nitrogen with piezometer pipe and cooling system condenser evaporator etc impurities clean 4 Soldering gun heating and welding ...

Страница 45: ... detector welding point leakage detect if no use soap suds material No Name Photo Main Usage 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 ...

Страница 46: ...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 ...

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