Table of Contents
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Service Manual
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.
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.
Applicable Models
HD-332RWN
Important Safety Notice
Model Code
UR-BCD255WE-ST
WARNING
1
Service Manual_2018-V2.0
BMF SERIES
Applicable Models
22031020003521
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Table of Contents
Related Manuals for Midea BMF Series
Summary of Contents for Midea BMF Series
- Page 1 Service Manual_2018-V2.0 Service Manual BMF SERIES Applicable Models Model Code Applicable Models HD-332RWN UR-BCD255WE-ST 22031020003521 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.
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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 3.1 H ..............................9 ANDLING 4. INSTALLATION AND COMMISSIONING ..................... 10 4.1 D ...................... - Page 4 Service Manual_2018-V2.0 8.9 M ..........................35 AIN CONTROL BOARD 9. EMPERATURE SENSING SYSTEM ......................36 9.1 P ..........................36 OSITION OF SENSORS 9.2 R ........................36 EPLACEMENT OF SENSORS 9.3 S ..........................37 ENSOR REPLACEMENT 9.4 S (R/T) ........................38 ENSOR RESISTANCE 10.
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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.
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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 3.1 Handling 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 n 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 4.1 Door Disassembly and Assembly The refrigerator door needs to be dismantled if it cannot enter the room in the whole. Disassembly of Freezer door Disassembly of Freezer door None Disassembly of refrigerator door Disassembly of refrigerator door None 4.2 Installation location... - Page 11 Service Manual_2018-V2.0 Fix the lower support with screws, and cover the screw cap.
- Page 12 Service Manual_2018-V2.0 Fix the top baffle to the top of the cabinet with screws, and cover the screw cap. The lower door of the cabinet is opened to the maximum angle, and the lower door of the refrigerator is opened to the corresponding position. Sliding the block to make inner edge align with the door edge, then fix the block to the door with screw and cover the screw cap.
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Page 13: Leveling Of The Refrigerator
Service Manual_2018-V2.0 The sealing strip in the accessory is sealed in the gap between the cabinet and the refrigerator. Installation is complete. 4.3 Leveling of the refrigerator Leveling of the refrigerator If the refrigerator cannot be placed steadily, adjust the footing to level it. -
Page 14: Door Reversal
Service Manual_2018-V2.0 4.4 Door reversal Door reversal 1. 。Power off the refrigerator, and remove all objects from the door trays. 2. Remove the upper hinge and hole caps of refrigerator door. 3. Remove the refrigerator door, the bottom hinge and the hole cover. - Page 15 Service Manual_2018-V2.0 5. Remove the fixed block of refrigerator door and rotate it for 180° ,assemble it on other side of refrigerator door. 6. Remove the the upper hinge of refrigerator door. 7. Remove the freezer door, the bottom hinge and the hole caps.
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Page 16: Installation Of Handle(None)
Service Manual_2018-V2.0 8. Exchange the F:bottom hinge and F:upper hinge ,then assemble them. 9. Remove the fixed block of refrigerator door and rotate it for 180° ，assemble it on other side of refrigerator door. 10.Finished 4.5 Installation of handle(None) Installation of handle Installation of handle None 4.6 Installation of door lock(None) -
Page 17: 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) Refrigerator chamber Freezer chamber ❶R ❾F wind channel wind channel❷R flue❸glass ❿Pizza box shelf❹Display control box❺glass shelf... -
Page 18: External Dimension
Service Manual_2018-V2.0 5.2 External dimension Size (mm) Description Code BCD255 None None Height to Top of Case 1785 None None Width None None Depth w/o Handles None None Depth (90 deg. with Door Open) 1060 None None Height to match the cabinet 1775 None None... -
Page 19: Location Of S/N
Service Manual_2018-V2.0 5.3 Location of S/N Some products also have S/N on the lower part of the right side of the Cabinet. -
Page 20: Product Specification
Service Manual_2018-V2.0 6. Product specification 6.1 Electrical parameters Applicable Models HD-332RWN Product Name None UR-BCD255WE-ST Product Code 22031020003521 None Item Specification Specification Compressor EZ65H1X-USCL Starter(PTC) QPE2-A4R7MD3 None Overload protector(OLP) DRB26T61A1 None Rmc:22.3±7%Ω Winding resistance of compressor Rsc:26.6±7%Ω None wiring terminal Rms=Rmc+Rsc Winding resistance picture None... -
Page 21: Circuit Diagram
Service Manual_2018-V2.0 Defrosting period Defrosting sensor NTC B3839 NTC B3839 Defrosting temperature None None controller Can’t be restored 73℃ Can’t be restored 73℃ Thermal fuse Defrosting heater in freezing 230V/180W 230V/180W chamber 6.4 Circuit diagram... -
Page 22: Main Control Board Structure Diagram
Service Manual_2018-V2.0 6.5Main control board structure diagram... -
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 BCD255_92031020Z00302_92031020Z00244 ❶Compressor→❷ condenser→❸Anti-condensation tube→❹ Dry filter→❺ Capillary tube→❻ Evaporator→❼ Suction tube→❶Compressor 7.2 Special soldering position(None) -
Page 24: Circulating Route Of Cooling Air
Service Manual_2018-V2.0 7.3 Circulating 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 1）Lift up the division plate with a proper force and pull it out towards yourself. Drawer The drawer is located at the bottom of freezing chambers; 1） Pull the drawer out completely; Lift it up slightly and take it out from the refrigerator. 8.3 Light system Light Light of the refrigerating chamber is located upper... -
Page 27: Air Duct Components Refrigerating Chamber And Fan Motor
Service Manual_2018-V2.0 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. Pilot light Pilot light None Fresh light Fresh light None 8.4Air duct components refrigerating chamber and fan motor Air duct components in freezing chamber... -
Page 28: Evaporator And Defrost System
Service Manual_2018-V2.0 All accessories in the freezing chamber should be dismantled before removing the air duct components. 1） Remove 1 screws on the cover plate of the freezing air duct using a cross screwdriver. 2） Pull out the connector terminal of the fan motor. 1、... -
Page 29: Compressor Case
Service Manual_2018-V2.0 Fuse The fuse is located on top of the evaporator 1） connect the fuse connector. 2） Cut off the band which fixes the fuse. 3） Separate the fuse and the evaporator. *Don’t break the welding of the evaporator in case that only the fuse needs to be replaced. - Page 30 Service Manual_2018-V2.0 2） Slowly tilt the refrigerator forward, relying on the wall or a solid enough object, leaving space to facilitate the operation. For safety, it should be carried by someone to prevent its falling. 3）Cut off the compressor pipeline.-❶Cut off the process pipeline.-❷Cut off the low-pressure muffler.-❸Cut off the high-pressure exhaust pipe.
- Page 31 Service Manual_2018-V2.0 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. 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...
- Page 32 Service Manual_2018-V2.0 9）Use the wrench to remove the bolts by steps❹❺❻❼, replace the compressor and reverse process can complete installation. 10）Use Pipe cutter cut off the condenser tube❽, then Shear off capillary ❾ by the capillary tube scissors. 11）Replace the compressorand welding the compressor pipeline.-❿Welding the process pipeline.-⓫Welding the low-pressure muffler.-⓬Welding the high-pressure exhaust pipe.
- Page 33 Service Manual_2018-V2.0 13）Vacuum system,The degree of vacuum below 6Pa. 14）Perfusion refrigerant. 15）Use the vise grip pliers clamp the middle of the process pipe, then seal welding process tube⓯⓰. Condenser fan motor Condenser fan motor None Standby condenser Standby condenser None Piping system in the compressor case ❶.Drain tray ❻.main control board box assembly...
- Page 34 Service Manual_2018-V2.0 Drain tray 1）Disengage the drain tray buckle out of the compressor bottom plate installation hole. 2）Replace the drain tray, the reverse process can complete installation. 3） Remove the screws from the back of cabinet assembly...
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Page 35: Display Control Board
Service Manual_2018-V2.0 4）Replace the drain tray, the reverse process can complete installation. 8.8 Display control board Display control board 1） Pry open the buckle of the display control board installation box with a straight screwdriver 2） Pull all connector terminals out; 3）... -
Page 36: Emperature Sensing System
Service Manual_2018-V2.0 9. emperature sensing system 9.1 Position of sensors Position of sensors Have 3 sensors ① Sensor in freezing chamber ② Sensor in refrigerating chamber ③ Sensor in Variable temperature chamber ④ Ambient temperature or humidity sensor ⑤ Ice machine sensor ⑥... -
Page 37: Sensor Replacement
Service Manual_2018-V2.0 Ambient temperature sensor Sensor position in the upper of the box 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）... -
Page 38: Sensor Resistance (R/T)
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 39: Function And Operation
Service Manual_2018-V2.0 10. Function and operation 10.1 Operation panel Icons Button ❺ Gear set button ❶ One gear ❷ Two gear ❸ Three gear ❹ Four gear 10.2 Display At the first time of power-on, the display screen will be bright for 3 seconds and then according to the three gear to show operation Normal operation display: 1）When failure occurs, the corresponding LED light group will display fault code (circular display);... -
Page 40: Lock And Unlock Settings
Service Manual_2018-V2.0 1 Gear 2 Gear 3 Gear 4 Gear 10.4 lock and unlock Settings In the lock state, long press the SET key for 3 seconds to unlock the device before it can operate. When the unlock is effective, all LED lights will flash for 2 times. In the lock state, all LED lights will flash for 2 s econds to remind the user to unlock the device first. -
Page 41: Defrosting Function
Service Manual_2018-V2.0 Step 2: Check to see if there are foreign matters on the terminal. Pull out the refrigerating sensor according to the method in described in Article 8.5 and then inspect the sensor against the resistance value table in 10.8. - Page 42 Service Manual_2018-V2.0 button is pressed within 25 return to normal operation mode seconds LED indicators on Gear 1, 2 light up and other Enter into test mode and press Select to LED indicators light off, then the compressor and enter into button for the first time the fan will start working forced...
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Page 43: 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 44: Troubleshooting Method
Service Manual_2018-V2.0 12. Troubleshooting Method 12.1 No cooling(Air cooling-Electronic) -
Page 45: No Working Of Compressor
Service Manual_2018-V2.0 12.2 No working of compressor... -
Page 46: Inside Frosting, No Defrosting
Service Manual_2018-V2.0 12.3 Inside frosting, no defrosting 12.4 Inside frosting, no defrosting-Maintenance guidelines... -
Page 47: Light Is Not On
Service Manual_2018-V2.0 12.5 Light is not on... -
Page 48: Fan Failure
Service Manual_2018-V2.0 12.6 Fan failure 12.7 Defective defrost circuit... -
Page 49: Noise
Service Manual_2018-V2.0 12.8 Noise 12.9 Air duct not operated(electronically) (None) -
Page 50: 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 51 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 For more information about the EV and SBOM, please visit the tsp.midea.com...
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