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Midea TMF Series Service Manual
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Midea TMF Series Service Manual

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Service Manual_2023-V1.0
Service Manual
TMF No Frost Series
Applicable Models
Product Models
Applicable Models
HD-518FWEN
UR-BCD398WE1-SQ
22031020009801
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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Summary of Contents for Midea TMF Series

  • Page 1 Service Manual_2023-V1.0 Service Manual TMF No Frost Series Applicable Models Product Models Applicable Models HD-518FWEN UR-BCD398WE1-SQ 22031020009801 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 Service Manual_2023-V1.0 Contents SIGNIFICANT UPDATE NOTES (NONE) ......................5 2. SAFETY WARNING ............................... 6 2.1 W ARNING FOR OPERATION SAFETY ........................... 6 2.2 S AFETY INSTRUCTION FOR REFRIGERANT ......................... 8 3. INSTALLATION AND COMMISSIONING ......................9 3.1 H ................................... 9 ANDLING 3.2 D ISASSEMBLY AND...
  • Page 4 Service Manual_2023-V1.0 8.2 R ........................... 34 EPLACEMENT OF SENSORS 8.3 S ......................35 ENSOR WITHOUT TERMINAL REPLACEMENT 8.4 S ENSOR TABLE ..............................36 9. FUNCTION AND OPERATION ..........................37 9.1 D ISPLAY OPERATION PANEL ............................. 37 9.2 T ............................37 EMPERATURE CONTROL 9.3 M ODE SETTING...
  • Page 5 Service Manual_2023-V1.0 1. Significant update notes (None)
  • Page 6 Service Manual_2023-V1.0 2. Safety Warning 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_2023-V1.0 CONNECTING ELECTRICITY Electrical Shock Failure to follow these instructions Hazard. can result in death, fire, or electrical Plug into a grounded 3-prong outlet. 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 Service Manual_2023-V1.0 guidelines of federal law must be removed before disposal. It is the consumer's responsibility to comply with federal and local regulations when disposing of this product. 12) This freezer is intended to be used in household and similar environments. 13) Do not store or use gasoline or any flammable liquids inside or in the vicinity of this freezer.
  • Page 9 Service Manual_2023-V1.0 3. Installation and commissioning 3.1 Handling Handling Protect the refrigerator in moving it,Same as shown as left photo, please move it by handcart with cushion Remove all packing materials and bottom cushion, the move into house for placement After moving it to appropriate location, wait for 2 hou rs before power on.
  • Page 10 Service Manual_2023-V1.0 3.4 Leveling of the refrigerator Leveling of the refrigerator If the refrigerator cannot be placed steadily, adjust the footing to level it. Turn the feet clockwise to raise the refrigerator; turn the feet counterclockwise to lower the refrigerator. 3.5 Left or right open door reversal Door reversal Power off and remove all food from the fridge.
  • Page 11 Service Manual_2023-V1.0 4) Put the refrigerator down,unscrew the lower hinge screw and adjusting foot,remove the lower hinge shaft and install it into the shaft hole on the other side of the hinge. 5) Install the lower hinge and tighten the screws on the left side of the refrigerator, install two adjusting feet, and erect the refrigerator.
  • Page 12 Service Manual_2023-V1.0 7)Install the refrigerated door on the lower hinge, install the center beam screws, center hinge and tighten the screws on the left side, and cover the hole cover (plug screw), center beam screws and screw caps on the right side.
  • Page 13 Service Manual_2023-V1.0 4. Main parts and external dimension 4.1 Main parts (The picture is only for reference, and specific appearance and configuration are subject to the real product)
  • Page 14 1085 (The picture is only for reference 4.3 Midea product serial number and location 1） Product Serial Number — Including order number, production date and other information. When the product occur problem, it needs to be recorded or photographed and provided to us.
  • Page 15 Service Manual_2023-V1.0 2）Paste location Some products also have S/N on the lower part of the right side of the Cabinet.
  • Page 16 Service Manual_2023-V1.0 5. Electric control system 5.1 Electrical parts parameters Applicable Model HD-518FWEN Product Model UR-BCD398WE1-SQ Rated Voltage 115V、60Hz Item Specification Refrigerant R600a Compressor EZ55H1Y-U(MD#) Starting device type Fixed Speed The COP of compressor 1.82(W/W) The max cooling capacity of compressor 115 W Winding resistance of compressor wiring Rmc = 8.25Ω±7%...
  • Page 17 Service Manual_2023-V1.0 5.2 Circuit diagram FD: Freezer defrost R: Refrigerator A: Ambient temperature...
  • Page 18 Service Manual_2023-V1.0 5.3 Main PCB terminal connection diagram Connecting terminals Connecting terminals Refrigeration lamp Ambient temperature sensor Freezing fan motor Display control panel Freezing defrost sensor Refrigeration door switch Radar sensor 1 10. Freezing frost heater Refrigeration sensor 11. Compressor Radar sensor 2 12.
  • Page 19 Service Manual_2023-V1.0 6. Refrigeration system 6.1 Refrigeration system working principle ❶Compressor→❷ Anti-condensation tube→❸ Condenser→❹ Dry filter→❺ Capillary tube→❻ Evaporator→❼ Suction tube→❶Compressor 6.2 Cooling pipeline and drain pipe inside the cabinet...
  • Page 20 Service Manual_2023-V1.0 6.3 Circulating route of cooling air 6.4 Welding points in chambers or foam layer 1) Welding points on freezer evaporator Welding point Pipe outer diameter (mm) 1-Freezer capillary and inlet of evaporator Aluminum pipe: Copper pipe: Φ6 Φ6.17 2-Heat transition tube and outlet of evaporator Aluminum pipe: Copper pipe: Φ6...
  • Page 21 Service Manual_2023-V1.0 6.5 Welding point in the compressor case Welding point Pipe outer diameter (mm) 1-Inlet of anti-condensation tube and outlet of venting Steel pipe: Φ4.0 Steel pipe: Φ4.0 connection tube 2-Inlet of condenser tube and outlet of anti-condensation Steel pipe: Φ4.0 Steel pipe: Φ4.0 tube Steel pipe: Φ4.
  • Page 22 Service Manual_2023-V1.0 7. Dismantling of parts 7.1 Parts on the door Door seal Door seal is installed into door liner groove. 1)Open the refrigerator door; 2)Take the door seal out of door liner; Door tray While squeezing it inward, lift up the door tray and take it out from door liner.
  • Page 23 Service Manual_2023-V1.0 7.2 Parts inside the refrigerator Refrigerator Fruit box cover Remove the crisper cover of ref. compartement accordin g to below steps: 1） 1）Take out the crisper firstly. 2） Lift up the Fruit box cover, and then pull out it. Shelves Lift up the division plate with a proper force and pull it out towards yourself;...
  • Page 24 Service Manual_2023-V1.0 1）Remove the lamp cover 2）Remove the light. 3) The reverse process can complete installation. 7.4 Air duct components refrigerating chamber and fan motor Air duct components in freezing chamber The refrigerator air duct components is located on the back of the refrigerating chamber.
  • Page 25 Service Manual_2023-V1.0 Fan motor of air duct None 7.5 Air duct components in freezing chamber 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）Hold the middle position upper of freezer air duct, raise it then pull it outwards gently.
  • Page 26 Service Manual_2023-V1.0 Fan motor of air duct Pull buckles at the back of the freezing air duct and remove 2 front cover plates; Replace the fan in reverse steps; 7.6 Evaporator and Defrost system Evaporator in freezing chamber 1）Remove the air duct components in freezing and variable temperature chamber.
  • Page 27 Service Manual_2023-V1.0 Defrost heater with defrost sensor and fuse, it can be replaced separately. 1） Cut off wiring terminal 2） Cut off the band which fixes the sensor 3） Cut off the band which fixes the fuse 4） Separate the sensor and the evaporator 5）...
  • Page 28 Service Manual_2023-V1.0 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 29 Service Manual_2023-V1.0 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 box.
  • Page 30 Service Manual_2023-V1.0 10）Use Pipe cutter cut off the condenser tube❽, then Shear off capillary ❾ by the capillary tube scissors. 11）Replace the compressor and welding the compressor pipeline.-❿Welding the process pipeline.- ⓫Welding the low-pressure muffler.-⓬Welding the high-pressure exhaust pipe. 12）Replace the filter, Cu-Fe tubes welding ⓭ used Ag welding rod, Cu-Cu tubes welding ⓮...
  • Page 31 Service Manual_2023-V1.0 15）Use the vise grip pliers clamp the middle of the process pipe, then seal welding process tube⓯⓰. 7.8 Display control board Display control board 1) Use slotted screwdriver to pry up the display control panel assembly; 2）Disconnect the wiring connector, take out the display control panel assembly;...
  • Page 32 Service Manual_2023-V1.0 3）Remove the 2 pcs fitting screws of display PCB, the display PCB can be dismantle for replacement; 7.9 Main control board 1) Remove the two screws that secure the main control board box. 2) Take out the mounting box, pry up the cover, disconnect the wiring terminal.
  • Page 33 Service Manual_2023-V1.0 5）Disconnect the wiring terminal, take out the main control board, and complete the replacement.
  • Page 34 Service Manual_2023-V1.0 8. Temperature sensing system 8.1 Position of sensors Position of sensors Have 3 sensors ② Sensor in refrigerating chamber ④ Ambient temperature sensor ⑦ Defrost sensor in freezing chamber 8.2 Replacement of sensors Sensor in refrigerating chamber The refrigerating air duct components should be dismantled before removing this sensor.
  • Page 35 Cut off the damaged head of sensor. Strip off the sensor wiring. 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.
  • Page 36 Service Manual_2023-V1.0 Wrap the two wires together with insulation tape. Wrap the two wires together. 8.4 Sensor R/T table Tx(℃) Tx(℉) Tx(℃) Tx(℉) Tx(℃) Tx(℉) （KΩ） （KΩ） （KΩ） -22.00 33.81 23.00 8.392 68.00 2.501 -20.20 31.85 24.80 7.968 69.80 2.391 -18.40 30.01 26.60...
  • Page 37 Service Manual_2023-V1.0 9. Function and operation 9.1 Display operation panel Refrigeration chamber temperature control panel Button Icons A. Refrigerating chamber temperature gear setting LED1 : SUPER COOL（0-2℃） LED2 : COLDEST（2-4℃） LED3 : ■（3-6℃） LED4 : COLD（5-8℃） 9.2 Temperature control 9.2.1 Temperature setting of refrigerating chamber Press the Freezing or Refrigerating chamber gear setting button once, the gear will be changed once, 15 seconds after setting the gear, the refrigerator will be running in accordance with the set value.
  • Page 38 Service Manual_2023-V1.0 The temperature inside the freezer can be adjusted by changing the position of the damper slider. The initial position of the damper slider is at position 3. If lower temperature inside the freezer is required, you can adjust the damper slider from the position 1 to left side. For better use of the refrigerator, it is recommended to keep the damper slider at initial position.
  • Page 39 Service Manual_2023-V1.0 9.5 Open door alarm (None) 9.6 Error code and solutions Fault Type Troubleshooting and Solutions Error code Refrigerator chamber Step 1: Check whether the connection terminals are LED① and LED② sensor failure (E1) together lighten plugged in place and whether there are foreign matters in them;...
  • Page 40 Service Manual_2023-V1.0 In forced defrosting mode, if the then the refrigerator will exit the test defrosting heater has been working mode and return to normal operation for 60 minutes, mode Enter into test mode and press All lights are off, then the refrigerator Select to exit will exit test mode and return to normal the test mode...
  • Page 41 Service Manual_2023-V1.0 10. Compressor 10.1 Compressor on and off control specifications 1.1 When one of the following conditions is met, the compressor stops: 1) Measured temperature in Refrigerating chamber ≤ Shutdown temperature of Refrigerating chamber 2) Enter defrosting cycle 3) The compressor runs continuously for more than 5 hours, will stop at least 10 minutes 1.2 When compressor shutdown time has been more than 10 min, one of the following conditions is met, the compressor starts up: 4) Measured temperature in Refrigerating chamber ≥...
  • Page 42 Service Manual_2023-V1.0 11. Troubleshooting Method 11.1 No cooling (Air cooling-Electronic)
  • Page 43 Service Manual_2023-V1.0...
  • Page 44 Service Manual_2023-V1.0 11.2 No working of compressor...
  • Page 45 Service Manual_2023-V1.0 11.3 Inside frosting, no defrosting...
  • Page 46 Service Manual_2023-V1.0 11.4 Inside frosting, no defrosting-Maintenance guidelines...
  • Page 47 Service Manual_2023-V1.0 11.5 Light is not on...
  • Page 48 Service Manual_2023-V1.0 11.6 Fan failure 11.7 Defective defrost circuit...
  • Page 49 Service Manual_2023-V1.0 11.8 Noise 11.9 Air duct not operated...
  • Page 50 Service Manual_2023-V1.0 12. Product exploded view and spare parts list Please log in to TSP system to view and download these contents.
  • Page 51 For more information about where you can drop off your waste for recycling, please contact your local authority, or where you purchased your product. Midea Refrigerators If you need to get detailed technical information from the manufacturer, please contact: xxx@midea.com...

This manual is also suitable for:

Hd-518fwen