Table of Contents
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Service Manual
WHS-625FWESS1
MU170CWBR1RC1 UR-BD481WE-ST
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.
Applicable Models
HS-625FWEN
WHS-625FWEW1
MRU17F6AWW
Upright Frz. Series
Product Models
UR-BD481WE-ST
UR-BD481WE-ST
UR-BD481WE-ST
UR-BD481WE-ST
1
Service Manual_2020-V1.0
Applicable Models
22031010002925
92031010Z01401
92031010Z01402
92031010Z01403
92031010Z01404
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Table of Contents
Related Manuals for Midea HS-625FWEN
Summary of Contents for Midea HS-625FWEN
- Page 1 Service Manual_2020-V1.0 Service Manual Upright Frz. Series Applicable Models Product Models Applicable Models HS-625FWEN UR-BD481WE-ST 22031010002925 WHS-625FWEW1 UR-BD481WE-ST 92031010Z01401 WHS-625FWESS1 UR-BD481WE-ST 92031010Z01402 MRU17F6AWW UR-BD481WE-ST 92031010Z01403 MU170CWBR1RC1 UR-BD481WE-ST 92031010Z01404 The picture in this service manual is only for reference, and specific appearance and configuration are subject to the real product.
- 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_2020-V1.0 Contents SIGNIFICANT UPDATE NOTES (NONE) ......................5 2. SAFETY WARNING ............................... 6 2.1 W ........................... 6 ARNING FOR OPERATION SAFETY ......................... 8 2.2 S AFETY INSTRUCTION FOR REFRIGERANT 3. INSTALLATION AND COMMISSIONING ......................9 ................................... 9 3.1 H ANDLING 3.2 D ........................ - Page 4 Service Manual_2020-V1.0 （N ） ....................31 7.10 V ARIABLE FREQUENCY DRIVER BOARD （N ） ..........................31 7.11 W ATER DISPENSER 8. TEMPERATURE SENSING SYSTEM ......................... 32 ............................32 8.1 P OSITION OF SENSORS 8.2 R ........................... 32 EPLACEMENT OF SENSORS ......................
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Page 5: Significant Update Notes (None)
Service Manual_2020-V1.0 1. Significant update notes (None) -
Page 6: Safety Warning
Service Manual_2020-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_2020-V1.0 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_2020-V1.0 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: Installation And Commissioning
Service Manual_2020-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: Leveling Of The Refrigerator
Service Manual_2020-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 （None）... -
Page 11: Main Parts And External Dimension
Service Manual_2020-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 12: External Dimension
Service Manual_2020-V1.0 4.2 External dimension Description Code Size (mm) Height to top of Cabinet 1650 Width Depth w/Cabinet Depth w/Door Depth w/Handle Depth (Door open 90 deg. w) 1528 Depth (Door open 135 deg. w) 1310 Width (Door open 135 deg. w) 1442 (The picture is only for reference) -
Page 13: Midea Product Serial Number And Location
Service Manual_2020-V1.0 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. 2）Paste location... -
Page 14: Electric Control System
Service Manual_2020-V1.0 5. Electric control system 5.1 Electrical parts parameters Applicable Model HS-774FWEN Product Model UR-BD481WE-ST 22031010002925 Product code Rated Voltage 115V、60Hz Item Specification Refrigerant R600a EZ75E1A (GMCC) Compressor (Part code : 11101010011093) Starting device type Fixed Speed The COP of compressor 1.64 (W/W) The max cooling capacity of 153 W... - Page 15 Service Manual_2020-V1.0 ■ Mechanical switch Switch of the light □ Magnetism control switch Defrosting parts Defrosting sensor NTC B3839 ( B5/25=3839K± 2% ) 115V、77(0 ～ -5) ℃ Fuse in freezing chamber Defrost heater in freezing chamber 115V、320W...
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Page 16: Circuit Diagram
Service Manual_2020-V1.0 5.2 Circuit diagram F: Freezer R: Refrigerator A: Ambient temperature... -
Page 17: Main Pcb Terminal Connection Diagram
Service Manual_2020-V1.0 5.3 Main PCB terminal connection diagram The connecting terminals list Connecting terminals Connecting terminals 1+2.Power supply 8. Freezing defrost sensor 3. Compressor 9. Ambient temperature sensor 4. Freezing defrost heater 10. LED of freezing chamber 5.Display control panel (Internal) 11. -
Page 18: Refrigeration System
Service Manual_2020-V1.0 6. Refrigeration system 6.1 Refrigeration system working principle ❶Compressor→❷Right condenser→❸Anti-condensation tube→❹Left Condenser→❺Dry filter→❻Capillary tube→❼Evaporator→❽Suction tube→❶Compressor 6.2 Cooling pipeline and drain pipe inside the cabinet... -
Page 19: Circulating Route Of Cooling Air
Service Manual_2020-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 Copper pipe: Copper pipe: Φ6 Φ6.35 2-Heat transition tube and outlet of evaporator Copper pipe: Copper pipe: Φ6... -
Page 20: Welding Point In The Compressor Case
Service Manual_2020-V1.0 6.5 Welding point in the compressor case Welding point Pipe outer diameter (mm) 1-Inlet of right condenser tube and outlet of venting Steel pipe: Φ4.0 Steel pipe: Φ4.0 connection tube 2-Inlet of anti-condensation tube and outlet of right condenser Steel pipe: Φ4.0 Steel pipe: Φ4.0 tube... -
Page 21: Dismantling Of Parts
Service Manual_2020-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 22: Light System
Service Manual_2020-V1.0 Freezer Drawer The drawer is located at the freezing chambers; Pull the drawer out completely; Lift it up slightly and take it out from the refrigerator. 7.3 Light system Light Light of the freezing 1）Remove the lamp cover 2）Disconnect the terminal block, remove the LED 3) The reverse process can complete installation. -
Page 23: Air Duct Components In Freezing Chamber And Fan Motor
Service Manual_2020-V1.0 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 1 screws on the cover plate of the freezing air duct using a cross screwdriver 2）... -
Page 24: Evaporator And Defrost System
Service Manual_2020-V1.0 1）Pry up all plastic hooks, and separate the back cover plate from air duct assembly. 2）Use cross screwdriver to remove the 3 pcs screws.. 3）Take off the fan motor, replace a new one, the reverse operation is for assembly. 7.6 Evaporator and Defrost system Evaporator in freezing chamber 1）Remove the air duct components in freezing and... -
Page 25: Compressor Case
Service Manual_2020-V1.0 3） Cut off the band which fixes the fuse 4） Separate the sensor and the evaporator 5） Take off the defrost heater from the supporting plate of evaporator Evaporator in refrigerating chamber None 7.7 Compressor case Rear cover None Piping and parts in the compressor case 1-Power cord... - Page 26 Service Manual_2020-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 27 Service Manual_2020-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 28 Service Manual_2020-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...
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Page 29: Display Control Board
Service Manual_2020-V1.0 15）Use the vise grip pliers clamp the middle of the process pipe, then seal welding process tube⓯⓰. Back-hanging wire tube condenser（None） Drain tray Remove the two fixing screws on the drain tray and pull it out, replace a new one. 7.8 Display control board Display control board 1）... -
Page 30: Main Control Board
Service Manual_2020-V1.0 3） Remove 2 screws 4） Pull out the connector terminal and replace the display control board. * The temperature control indication sticker is likely to be damaged when replacing, thus it is advised to prepare one for standby before replacement 7.9 Main control board Main control board 1）... -
Page 31: Variable Frequency Driver Board（None
Service Manual_2020-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 screws, take out the main control board, and complete the replacement. -
Page 32: Temperature Sensing System
Service Manual_2020-V1.0 8. Temperature sensing system 8.1 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 33 Service Manual_2020-V1.0 2）Pull out the sensor Ambient temperature sensor The sensor is located in the wire box of the refrigerator top. Defrost sensor in freezing chamber 1） Cut off wiring terminal; 2） Cut off the band which fixes the sensor;...
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Page 34: 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 35: Sensor R/Ttable
Service Manual_2020-V1.0 8.4 Sensor R/T table Tx(℃) Tx(℉) R（KΩ） Tx(℃) Tx(℉) R（KΩ） Tx(℃) Tx(℉) R（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 36: Function And Operation
Service Manual_2020-V1.0 9. Function and operation 9.1 Display operation panel Single freezing display screen Button Icons ①Temperature display area A. Temperature down ② High temperature alarm B. Quick freezer ③Door opening alarm C. Lock and unlock ④Fahrenheit temperature D. Release alarm E. -
Page 37: Temperature Control
Service Manual_2020-V1.0 9.2 Temperature control A. Single freezing model Temperature setting of freezing chamber The temperature setting range of freezer chamber is -24℃～-16℃ (10℉～-11℉). The temperature can be set circularly, press the button “-” or “+” once, the temperature turn by 1℃/℉. The setting is effective after being locked.-14℃→... -
Page 38: Defrosting Function
Service Manual_2020-V1.0 Press the “ Turbo Freeze ” button for three seconds and the“ON” icon will illuminate. The temperature of freezing chamber is set to -24℃ (-11℉). Automatically exit for up to 8 hours. 9.3.2 Celsius / Fahrenheit temperature switch Press the“+”and“-”button for three seconds to switch, and the ℃... -
Page 39: Error Code And Solutions
Note: The door opening alarm time can be set through the APP and then remembered to the main board after setting. 9.6 Error code and solutions Note: Midea full common fault code, combined with the actual product display reference. Error code Fault Type... - Page 40 Service Manual_2020-V1.0 display control board and the main 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. Step 4: If the fault still occurs, replace the main PCB.
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Page 41: Test Mode
Service Manual_2020-V1.0 Step 1: Check whether the water tank is installed in place, pull out the water tank and install it again; Step 2: Check whether the connection terminals behind the water tank Water tank seat is plugged in place and whether there are foreign matters in it; installation failure after cleaning the terminal, plug it in again. -
Page 42: Demo Mode
Service Manual_2020-V1.0 9.8 Demo mode Press the A+B+E key at the same time for 4 seconds to enter / exit demo mode 9.9 Backup data for power fail The running state of the refrigerator is remembered after compressor running for 1 hour continuously The running state of the refrigerator is remembered after change function settings and lock. -
Page 43: Compressor
Service Manual_2020-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 all chambers ≤ Shutdown temperature of all chamber 2) Enter defrosting cycle 3) The compressor runs continuously for more than 3 hours, will stop at least 10 minutes 1.2 When compressor shutdown time has been more than 5 min, one of the following conditions is met, the compressor starts up: 1) Measured temperature in freezer chamber ≥... -
Page 44: Troubleshooting Method
Service Manual_2020-V1.0 11. Troubleshooting Method 11.1 No cooling (Air cooling-Electronic) - Page 45 Service Manual_2020-V1.0...
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Page 46: No Working Of Compressor
Service Manual_2020-V1.0 11.2 No working of compressor... -
Page 47: Inside Frosting, No Defrosting
Service Manual_2020-V1.0 11.3 Inside frosting, no defrosting... -
Page 48: Inside Frosting, No Defrosting-Maintenance Guidelines
Service Manual_2020-V1.0 11.4 Inside frosting, no defrosting-Maintenance guidelines... -
Page 49: Light Is Not On
Service Manual_2020-V1.0 11.5 Light is not on... -
Page 50: Fan Failure
Service Manual_2020-V1.0 11.6 Fan failure 11.7 Defective defrost circuit... -
Page 51: Noise
Service Manual_2020-V1.0 11.8 Noise 11.9 Air duct not operated（Option）... -
Page 52: Ice Makernot Make Ice（Option
Service Manual_2020-V1.0 11.10 Ice makernot make ice（Option）... -
Page 53: Product Exploded View And Spare Parts List
Service Manual_2020-V1.0 12. Product exploded view and spare parts list Please log in to TSP system to view and download these contents. - Page 54 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...