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Service Manual_2021-V1.0
Service Manual
SBS Series
Applicable Models
Model Code
Applicable Models
HC-969WE
UR-BCD745WE-DT
22031050000901
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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Table of Contents
Related Manuals for Midea HC-969WE
Summary of Contents for Midea HC-969WE
- Page 1 Service Manual SBS Series Applicable Models Model Code Applicable Models HC-969WE UR-BCD745WE-DT 22031050000901 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...
- 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_2021-V1.0 Contents SIGNIFICANT UPDATE NOTES (NONE) ......................5 2. SAFETY WARNING ............................... 6 2.1 W ........................... 6 ARNING FOR OPERATION SAFETY 2.2 S AFETY INSTRUCTION FOR REFRIGERANT ......................... 8 3. INSTALLATION AND COMMISSIONING ......................9 3.1 H ANDLING ................................... 9 3.2 D ........................ - Page 4 Service Manual_2021-V1.0 7.11 M AIN CONTROL BOARD OWER BOARD AND NVERTER DRIVER BOARD .............. 42 7.12 WIFI （N ） ........................43 NETWORK MODULAR 7.13 D ................................. 43 ISTRIBUTOR 7.14 O PEN DOOR MOTOR AND ICE BLOCKING PLATE ..................... 44 7.15 W ATERWAY SYSTEM ...............................
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Page 5: Significant Update Notes (None)
Service Manual_2021-V1.0 1. Significant update notes (None) -
Page 6: Safety Warning
Service Manual_2021-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_2021-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.
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Page 8: Safety Instruction For Refrigerant
Service Manual_2021-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: Installation And Commissioning
Service Manual_2021-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_2021-V1.0 3) As shown as right photos, use screwdriver to remove the 5 pcs screws, and then remove the upper hinge cover. Disconnect the 5pcs fast connectors, then use cross screwdriver or socket spanner to remove the 2pcs M5 screws and 1 pc grounding screw by anticlockwise.
- Page 11 Service Manual_2021-V1.0 Assembly of freezer door 1) Put the freezer door down gently until the axis of hinge inserted into the axis hole of door completely. 2) Put the upper hinge on suitable position, then use cross screwdriver or socket spanner to fix the 2 pcs M5 screws and 1 pc grounding screw by clockwise, and connect the 6 pcs fast connectors.
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Page 12: Installation Location
Service Manual_2021-V1.0 assembly of refrigerator door 1) Put the refrigerator door down gently until the axis of hinge inserted into the axis hole of door completely, and then closes the door, to make sure the refrigerator door fit the cabinet closely. 2) Put the upper hinge on suitable position, then use cross screwdriver or socket spanner to fix the 2 pcs M5 screws. -
Page 13: Leveling Of The Refrigerator
Service Manual_2021-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 Adjustment to level the door Adjustment to level the door（Up and down ）... - Page 14 Service Manual_2021-V1.0 Use screwdriver to loosen the 2 pcs screws, right and left adjust the upper hinge to make door aperture be homogeneity. Put the hinge cover on suitable position, and then use the screwdriver to fix the 5 pcs screws. Adjustment to plane the door (left and right) Use screwdriver to remove the 5 pcs screws, and then remove the upper hinge cover.
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Page 15: Main Parts And External Dimension
Service Manual_2021-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 16: External Dimension
1560 (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 17 Service Manual_2022-V1.0 2）Paste location Some products also have S/N on the lower part of the right side of the Cabinet.
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Page 18: Electric Control System
Service Manual_2022-V1.0 5. Electric control system 5.1 Electrical parts parameters Applicable Model HC-969WE Product Model UR-BCD745WE-DT Rated Voltage 115V 、60Hz Item Specification Refrigerant R600a DZ120V1U Compressor (Part code : 11101020001785) Starting device type DC Inverter The COP of compressor 1.97 (W/W) The max cooling capacity of 327.4 W... - Page 19 Service Manual_2022-V1.0 Lights inside the freezing chamber DC12V、≤2.5W Lights inside the refrigerating DC12V、≤2.5W chamber Others Lights DC5V、≤1W □ Mechanical switch Switch of the lights ■ Magnetism control switch Other electrical parts Water valve 110～127V、20W Water pump DC12V、6W Electric exchange valve None Defrosting parts Defrosting sensor...
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Page 20: Circuit Diagram
Service Manual_2022-V1.0 5.2 Circuit diagram F: Freezer R: Refrigerator FD: Freezer Defrost C: Condensation... - Page 21 Service Manual_2022-V1.0...
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Page 22: Main Pcb Terminal Connection Diagram
Service Manual_2022-V1.0 5.3 Main PCB terminal connection diagram... -
Page 23: Power And Ice-Making Control Board Wiring Schematic
Service Manual_2022-V1.0 5.4 Power and ice-making control board wiring schematic... -
Page 24: Inverter Board Terminal Connection Diagram
Service Manual_2022-V1.0 5.5 Inverter board terminal connection diagram 1. Filter 2. PCB 3. Inverter Board 4. Compressor... -
Page 25: Refrigeration System
Service Manual_2022-V1.0 6. Refrigeration system 6.1 Refrigeration system working principle ❶Compressor→❷Condenser→❸Anti-water condensed pipe→❹Drier→❺Capillary Tube→❻Evaporator→❼Suction Pipe→❽Suction connection Pipe→❶Compressor 6.2 Cooling pipeline and drain pipe inside the cabinet... -
Page 26: Circulating Route Of Cooling Air
Service Manual_2022-V1.0 6.3 Circulating route of cooling air 6.4 Welding points in chambers or foam layer Welding points on freezer evaporator Welding point Pipe outer diameter (mm) 1-Freezing capillary and inlet of evaporator Aluminum pipe: Copper pipe: Φ3.0 Φ5.1 Copper pipe: Φ6.35 Aluminum pipe: Φ8 2-Heat transition tube and outlet of evaporator... -
Page 27: Welding Point In The Compressor Case
Service Manual_2022-V1.0 6.5 Welding point in the compressor case Welding point Pipe outer diameter (mm) Steel pipe: Φ4.76 Steel pipe: Φ4.76 1-Inlet of anti-condensation tube and outlet of condenser 2-Outlet of anti-condensation tube and inlet of dry filter Copper pipe: Steel pipe: Φ4.76 Φ6.33 3-Outlet of dry filter and inlet of freezing capillary... -
Page 28: Dismantling Of Parts
Service Manual_2022-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 ① out of door liner; Door tray While squeezing it inward, lift up the door tray and take it out from door liner. -
Page 29: Light System
Service Manual_2022-V1.0 Freezer Drawer 1)Pull the drawer out completely; 2)Lift it up slightly and take it out from the refrigerator. 7.3 Light system Light Light of the refrigerating 1）Use vacuum cap to pull the lampshade outwards 2）Push away LED light panel with your hand along the arrow direction shown in the picture and separate LED light panel from the hook;... -
Page 30: Air Duct Components Refrigerating Chamber And Fan Motor
Service Manual_2022-V1.0 2）Pull the terminal, remove the light switch. 7.4 Air duct components refrigerating chamber and fan motor Air duct components refrigeratingchamber 1） Remove by cross screwdriver 3 screws on the positions shown in the picture anticlockwise. 2）Remove the filter along the arrow direction, then remove the decoration cover of refrigerator air duct until air duct decoration cover completely falls off from refrigerator body and air duct foam，remove... -
Page 31: Ice Maker
Service Manual_2022-V1.0 3）Remove connecting terminals of ventilation door by hands, catch hold of air duct foam in refrigerating chamber and pull it towards the arrow direction shown in the picture until air duct foam is separated from refrigerator body, and take out refrigerating air duct foam. -
Page 32: Crashing Ice Motor
Service Manual_2022-V1.0 2) First use a screwdriver to remove a screw as shown in the picture. Pull the ice maker assembly outwards forcefully, and disconnect the wiring connector, then taken out the ice maker. 7.6 Crashing ice motor disassembly of crashing ice motor 1）Use cross screwdriver to remove 4 screws of crashing ice motor, and disconnect the wiring connector. -
Page 33: Air Duct Components In Freezing Chamber And Fan Motor
Service Manual_2022-V1.0 7.7 Air duct components in freezing chamber and fan motor Air duct components in freezing chamber 1）First, take out 2 screw caps of air duct cover with flat-blade screwdriver or blade, then remove 2 screws fixing air duct cover. 2）As shown in the right picture, catch hold of upper part of freezing air duct as shown in the picture, pull it outward along the arrow direction with strength until air... -
Page 34: Evaporator And Defrost System
Service Manual_2022-V1.0 2） After the removal of cover plate of upper air duct in freezing chamber. Remove the three fixing screws anticlockwise by cross screwdriver. Complete disassembly of the motor 7.8 Evaporator and Defrost system Evaporator in freezing chamber Evaporator in freezing chamber 1）Remove the air duct components in freezing chamber. -
Page 35: Compressor Case
Service Manual_2022-V1.0 Defrost heater components on the evaporator This defrost heater with defrost sensor and fuse can be dismantled separately, it DOES NOT need to replace the evaporator assembly if only heater fail to work. Defrosting fuse ① Defrost sensor ② Defrost heater ③... - Page 36 Service Manual_2022-V1.0 Piping and parts in the compressor case ❶Drier ❺Compressor ❷Suction Pipe ❻Condenser fan ❸Capillary Tube ❼Condenser ❹Anti-water condensed pipe ❽Water valve Disassembly and assembly of compressor 1）Cut off the power, remove the goods in the refrigerator, with the tape to make the door fixed firmly and prevent the door dropping when the refrigerator dumping.
- Page 37 Service Manual_2022-V1.0 4-1）Remove the screws(for some models) -Two screws outside -One screw inside 4-2）Remove the metal clamp(for some models) -Disassembly the metal clamp that is fix the electric appliance shield 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.
- Page 38 Service Manual_2022-V1.0 8）Loosen the screw of the compressor bottom plate, remove the floor together with the compressor from the box. 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...
- Page 39 Service Manual_2022-V1.0 12）Replace the filter, Cu-Fe tubes welding ⓭ used Ag welding rod, Cu-Cu tubes welding ⓮ used Cu welding rod. 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.
- Page 40 Service Manual_2022-V1.0 2) Pull the fan blade pointed by the arrow to the left and remove it 3）Remove the screws fixing the motor. 4）Push the fan bracket to the left in the direction of the arrow until the motor can be taken out. Water valve（Option）...
- Page 41 Service Manual_2022-V1.0 2）Take out the water valve and pull off the connecting terminal 3）Press the position shown in the figure, take out the water pipe and complete the replacement of water valve. Drain tray 1）Remove the bottom screws of the compressor bottom plate 2）Replace the drain tray, the reverse process can complete installation.
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Page 42: Display Control Board
Service Manual_2022-V1.0 7.10 Display control board Display control board 1）Use vacuum cap to pull the control panel outwards 2）Disconnect the fast connector, then remove the control PCB 7.11 Main control board, Power board and Inverter driver board Main control board, Power board and Inverter driver board 1) remove the screw anticlockwise,then remove the PCB housing cover 2) Pull the lock of fast connector upwards,then... -
Page 43: Wifi Network Modular（None
Service Manual_2022-V1.0 The connecting terminals remove： a. Use a needle tool to remove the lock at the arrow and remove the lock upward; b. After the lock is removed, press the hook to remove the wiring connectors 3) Remove the screw anticlockwise,then remove the PCB and variable frequency driver board. -
Page 44: Open Door Motor And Ice Blocking Plate
Service Manual_2022-V1.0 1) After removing the display control panel, use a screwdriver to remove the two screws as shown in the figure. Grasp the position as shown in the figure and pull the distributor down firmly. 7.14 Open door motor and ice blocking plate Open door motor 1) After removing the distributor, use a screwdriver to remove the screw as shown in the figure. -
Page 45: Waterway System
Service Manual_2022-V1.0 3) Remove the ice blocking plate. 5) Take out the connecting terminal, complete the ice blocking plate and the assistive heater replacement. 7.15 Waterway system Disassembly of internal water filter... - Page 46 Service Manual_2022-V1.0 Installation of external waterway You need a suitable pipe connector for connecting the water pipe with the water tap. 1) Please insert the water pipe(14) into one end of pipe connector (13); 2) Fix another end of pipe connector on the water tap. 3) Insert the end of white water pipe into one end of pipe adapter ;...
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Page 47: Temperature Sensing System
Service Manual_2022-V1.0 8. Temperature sensing system 8.1 Position of sensors Position of sensors Have 5 sensors ① Ice maker temperature sensor ② Freezer temperature sensor ③ Freezer defrosting temperature sensor ④ Ambient temperature and humidity sensor ⑤ Refrigerator temperature sensor 8.2 Replacement of sensors Sensor in freezing chamber 1）To remove the sensor cover, you may squeeze it up... - Page 48 Service Manual_2022-V1.0 Ambient temperature and humidity sensor The sensor used for measurement of ambient temperature is located within upper hinge cover of refrigerating chamber door; Defrost sensor in freezing chamber 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.
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Page 49: Sensor Without Terminal Replacement
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 50: Sensor R/Ttable
Service Manual_2022-V1.0 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 7.568 71.60 2.287 -16.60 28.29 28.40 7.190 73.40 2.188 -14.80 26.68 30.20 6.833... -
Page 51: Function And Operation
Service Manual_2022-V1.0 9. Function and operation 9.1 Display operation panel Icons Button ❶ R/F temperature display area A. Ref. temperature adjustment ❷ Super freezing B. Frz. temperature adjustment ❸ Super cooling C. Water Filter time reset ❹ Water filter over-use warning light D. -
Page 52: Temperature Control
Service Manual_2022-V1.0 9.2 Temperature control 9.2.1 Temperature setting of refrigerating chamber Unlock the display control panel first. Press “REF. TEMP” button, then press “REF.TEMP” to adjust temperature, the setting temperature is changed circularly as below. Click the LOCK button to take effect. 7℃→6℃... -
Page 53: Defrosting Function
Service Manual_2022-V1.0 9.3.5 Dispenser heater shutdown Unlock the display control panel first. Then press the LOCK button and the ICE ON button at the same time for 3 seconds to enter the mode. Click the LOCK button to take effect. Under this mode, turn off the heater for the distributor, thermal insulating door and mouth frame. -
Page 54: Open Door Alarm
Note: When open the door, the display panel will light on. When the door is closed, the display panel will be light off after 30s if there is no any operation on display panel. 9.6 Error code and solutions Note: Midea full common fault code, combined with the actual product display reference. Fault Type Troubleshooting and Solutions... - Page 55 Service Manual_2022-V1.0 between the display control board and the main control PCB to see if it is broken. If test value is ∞Ω, the wire is broken.(If the wire in the door is broken, replace the door. Other conditions cannot be repaired.) Step 3: If the wire is OK, replace the display control board.
- Page 56 Service Manual_2022-V1.0 Step 2: Enter the forced ice making mode and check whether the ice maker works normally. Step 3: If the ice maker does not work, replace the ice motor. Step 4: If the fault still occurs, replace the main control PCB. Step 1: Check whether the connection terminal s in the hinge cover and the main control PCB are plugged in place and whether there are foreign matters in them;...
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Page 57: Eye Test Mode Of Ice Maker
Service Manual_2022-V1.0 Step 1: Check whether the connection terminal on the dispenser display PCB, hinge cover and Ice-making PCB (Power board) are plugged in place and whether there are foreign matters in them; after cleaning the terminals, plug them Three indicators blink at the same time. in again. -
Page 58: Demo Mode
Service Manual_2022-V1.0 Unlock the display control panel first. Keep pressing the “LOCK” and “FRZ. Display screen shows “0”, then the refrigerator enters into test mode Enter Test TEMP” button for 3 seconds and Mode release After entering into test mode, if no The refrigerator will exit the test mode button is pressed within 30 seconds and return to normal work mode... -
Page 59: Backup Data For Power Fail
Service Manual_2022-V1.0 Entry: Within 10 minutes of first power-up. Unlock the display panel first, press the “ICE ON” and “ENERGY SAVING” button at the same time for 3 seconds, all lights on the display board show for 3 seconds, and then the unit will enter the mode after lock. Mode state: The display panel does not go out, the light will be on normally. -
Page 60: Compressor
Service Manual_2022-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 freezer room ≤ Shutdown temperature of freezer room 2) Enter defrosting cycle 3) The compressor runs continuously for more than 3 hours, will stop at least 5 minutes 1.2 When all the following conditions are met, the compressor starts up: 1) Measured temperature in freezer room ≥... - Page 61 Service Manual_2022-V1.0 Step 4: If the connection is fine, replace a new compressor Step 1: Measure whether the U-V-W resistance Blink eight times: light 0.5 of compressor is same second, extinguish 0.5 second, Misstep Step 2: If ok, replace a new inverter board interval time(extinguish) is 2 protection Step 3: If the fault still occurs, replace a new...
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Page 62: Troubleshooting Method
Service Manual_2022-V1.0 11. Troubleshooting Method 11.1 No cooling (Air cooling-Electronic) -
Page 63: No Working Of Compressor
Service Manual_2022-V1.0 11.2 No working of compressor... -
Page 64: Inside Frosting, No Defrosting
Service Manual_2022-V1.0 11.3 Inside frosting, no defrosting... -
Page 65: Inside Frosting, No Defrosting-Maintenance Guidelines
Service Manual_2022-V1.0 11.4 Inside frosting, no defrosting-Maintenance guidelines... -
Page 66: Light Is Not On
Service Manual_2022-V1.0 11.5 Light is not on... -
Page 67: Fan Failure
Service Manual_2022-V1.0 11.6 Fan failure 11.7 Defective defrost circuit... -
Page 68: Noise
Service Manual_2022-V1.0 11.8 Noise 11.9 Air duct not operated... -
Page 69: Ice Maker Not Make Ice（Option
Service Manual_2022-V1.0 11.10 Ice maker not make ice（Option）... -
Page 70: No Ice Or Crushed Ice Falling Off The Distributor（Option
Service Manual_2022-V1.0 11.11 No ice or crushed ice falling off the distributor（Option）... -
Page 71: Product Exploded View And Spare Parts List
Service Manual_2022-V1.0 12. Product exploded view and spare parts list Please log in to TSP system to view and download these contents. - Page 72 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...
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