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维修手册
Applicable Models
The picture in this service manual is only for reference, and specific
appearance and configuration are subject to the real product.
本手册主要讲授方法，具体的作业技能需要工程师通过日常工作积累。
This manual mainly teaches the method, the specific work skill needs engineer
to accumulate through the daily work.
Service Manual
市场型号
MRU21F6AWW
MRU21B6ASL
本手册中图片均为参考示意图，具体外观和配置以实物为准。
UPRIGHT SERIES
产品型号
Product Models
UR-BD596WX-ST
1
Service Manual_
基准编码
Applicable Models
22031010006462
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Summary of Contents for Midea MRU21F6AWW
- Page 1 维修手册 UPRIGHT SERIES 市场型号 产品型号 基准编码 Applicable Models Product Models Applicable Models MRU21F6AWW UR-BD596WX-ST 22031010006462 MRU21B6ASL 本手册中图片均为参考示意图，具体外观和配置以实物为准。 The picture in this service manual is only for reference, and specific appearance and configuration are subject to the real product. 本手册主要讲授方法，具体的作业技能需要工程师通过日常工作积累。 This manual mainly teaches the method, the specific work skill needs engineer...
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Page 2: Important Safety Notice
Service Manual_ WARNING Important Safety Notice 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. -
Page 3: Table Of Contents
Service Manual_ Contents 重要更新说明 SIGNIFICANT UPDATE NOTES (NONE) ................5 2. 安全警告 SAFETY WARNING ..........................6 2.1 作业安全警告 W ARNING FOR OPERATION SAFETY ....................6 2.2 冷媒安全须知 S ..................8 AFETY INSTRUCTION FOR REFRIGERANT 3. 安装和调试 INSTALLATION AND COMMISSIONING ..................9 3.1 搬运... - Page 4 Service Manual_ 8.1 传感器的位置 P ........................36 OSITION OF SENSORS 8.2 传感器拆换 R ......................36 EPLACEMENT OF SENSORS 8.3 无接线端子的传感器更换 S ENSOR WITHOUT TERMINAL REPLACEMENT ............. 37 8.4 传感器的温度-阻值对照表 S ENSOR TABLE ....................38 9. 功能和操作 FUNCTION AND OPERATION ....................... 40 9.1 显示操作面板...
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Page 5: 重要更新说明 Significant Update Notes (None)
Service Manual_ 重要更新说明 Significant update notes (None) -
Page 6: 安全警告 Safety Warning
Service Manual_ 安全警告 Safety Warning Warning for operation safety 作业安全警告 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: Connecting Electricity
Service Manual_ 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. -
Page 8: Grounding Requirement
Service Manual_ 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: 安装和调试 Installation And Commissioning
Service Manual_ 安装和调试 Installation and commissioning Handling 搬运 Handling 搬运 1) 在移动中保护冰箱，如图所示，使用加垫的手推车。 2) 拆除冰箱所有包装材料和底垫再搬运到室内安放。 3) 放置 2 小时再通电运行。 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: 箱体调平 Leveling Of The Refrigerator
Service Manual_ Leveling of the refrigerator 箱体调平 Leveling of the refrigerator 箱体调平 产品无法放置平稳时，可以通过调节底脚的方式解决，底 脚顺时针旋转冰箱升高；底脚逆时针旋转冰箱降低。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. - Page 11 Service Manual_ 取下门，放在一边，然后将冰箱背面朝下放在地上， 取下右下铰链组件和可调节脚。撬开左侧的螺钉盖、插钉 和可调节支脚，取下螺丝， Remove the door, set it aside, then lay the back of the refrigerator on the ground and remove the right bottom hinge assembly and adjustable feet.Pry off the insert pin,screw cap and adjustable feet on the left side and remove the screw.
- Page 12 Service Manual_ 将门水平放置，拆下门止挡和轴套，然后将它们安装 Place the door horizontally, remove 在门体的另一侧。 the stop block and shaft sleeve and install them on the other side of the door body. Lift the 将冰箱竖起，将门放在底部铰链的铰链销上。 refrigerator and place the door onto the hinge pin of the bottom hinge.
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Page 13: Nstallation Of Handle One
Service Manual_ 9）换门完成 The door change is completed. Installation of handle（None） 门把手安装 Installation of door lock（None） 门锁安装... -
Page 14: 主要部件和外形尺寸 Main Parts And External Dimension
Service Manual_ 主要部件和外形尺寸 Main parts and external dimension Main parts 主要零部件 （本图片为参考示意图，具体外观和配置以实物为准）(The picture is only for reference, and specific appearance and configuration are subject to the real product) 冷冻室 Freezer chamber 冷冻室 Freezer chamber Air duct assembly of freezer(up) F bottom Plastic drawer ❶上风道盖板... -
Page 15: 外形尺寸 External Dimension
Service Manual_ External dimension 外形尺寸 尺寸Size (mm) 描述Description 代码Code 高度Height to Top of Case 1692 宽度Width 深度/箱体Depth w/Cabinet 深度/含门体Depth w/Door 深度/含门把手Depth w/Handle 深度/开门90°Depth (Door open 90 deg. w) 1549.5 深度/开门135°Depth (Door open 135 deg. w) 1395 宽度/开门135°Width (Door open 135 deg. w) 1275 （本图片为参考示意图）(The picture is only for reference) -
Page 16: Idea Product Serial Number And Location
Service Manual_ Midea product serial number and location 美的冰箱产品序列号和位置 1） Product Serial Number — 包含定单号、生产日期等信息。当产品发生问题时，需要将它记录或拍 照，提供给我们。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）序列号的粘贴位置... -
Page 17: 电控系统 Electric Control System
Service Manual_ 电控系统 Electric control system Electrical parts parameters 电器件参数 MRU21F6AWW Applicable Model 市场型号 MRU21B6ASL Product Model UR-BD596WX-ST 产品型号 Rated Voltage 115V 60Hz 额定电压 项目 Item 规格 Specification Refrigerant R600a 制冷剂 Compressor HVM100MS 压缩机型号和品牌 Starting device type Inverter 压缩机驱动类型 变频... -
Page 18: 电路图 Circuit Diagram
Service Manual_ 化霜部件 Defrosting parts Defrosting sensor 型号：NTC B3839 ( B5/25=3839K±2% ) 化霜传感器 115V、77(0 ～ -4) ℃ Fuse in freezing chamber 冷冻室化霜熔断器 Defrost heater in freezing 冷冻室化霜加热器 115V、250W chamber Circuit diagram 电路图 F: Freezer R: Refrigerator FD: Freezer Defrost A: Ambient temperature... -
Page 19: 接线图 Wiring Diagram
Service Manual_ Wiring diagram 接线图... -
Page 20: 制冷系统 Refrigeration System
Service Manual_ 制冷系统 Refrigeration system Refrigeration system working principle 制冷系统工作原理 ❶压缩机→❷防凝露管→❸冷凝器→❹干燥过滤器→❺毛细管→❻蒸发器→❼回气管→❶压缩机 ❶Compressor→❷ Anti-condensation tube→❸ Condenser→❹ Dry filter→❺ Capillary tube→❻ Evaporator→❼ Suction tube→❶Compressor Cooling pipeline and drain pipe inside the cabinet 发泡箱体中的管路... -
Page 21: Irculating Route Of Cooling Air
Service Manual_ Circulating route of cooling air 冷气循环路线 Welding points in chambers or foam layer 间室中或发泡层内的焊点 冷冻蒸发器上的焊点 Welding points on freezer evaporator Welding point 焊点位置 管路材质外径 Pipe outer diameter (mm) 铜管 铝管 1-毛细过渡管与蒸发器进气口 Freezer capillary and inlet of Copper pipe: Aluminum Φ6 pipe: Φ6.0... -
Page 22: Elding Point In The Compressor Case
Service Manual_ Welding point in the compressor case 压缩机仓内焊点 ① ② ③ ⑦ ⑧ ⑥ ⑤ ④ Welding point 焊点位置 管路材质外径 Pipe outer diameter (mm) 镀锌钢管 镀锌钢管 1-防凝露管进口与排气连接管出口 anti-condensation tube Steel Steel pipe: Φ4.0 pipe: Φ4.0 and outlet of venting connection tube 镀锌钢管... -
Page 23: 部件拆装 Dismantling Of Parts
Service Manual_ 部件拆装 Dismantling of parts Parts on the door 门上部件 Door seal 门封条 从拐角拉出更加方便。It's more convenient to pull out from the corner. 重新装入时，必须装到门胆槽内，仔细压平，并检查门 封条是否与箱体间有缝隙。When reloading, the door must be installed into the tank, carefully pressed flat, and check whether there is a gap between the door seal and the box body. -
Page 24: 灯系统 Light System
Service Manual_ Drawer 抽屉 1）适当用力，将玻璃抽屉向上抬起，然后朝自己方向 拉出；Lift up the glass with a proper force and pull it out towards yourself. Light system 灯系统 灯 Light Light of the freezer chamber is 灯位于冷冻室上部 located upper chamber Insert a slit with 用一字型螺丝刀插入缝隙， 拆除灯罩 1）... -
Page 25: Ir Duct Components Refrigerating Chamber And Fan Motor
Service Manual_ Air duct components refrigerating chamber and fan motor (None) 冷藏风道及风扇电机 Air duct components in freezing chamber and fan motor 冷冻风道及风扇电机 冷冻室风道 Air duct components in freezing chamber 在拆卸风道组件之前，应拆除冷冻室所有附件。All accessories in the freezing chamber should be dismantled before removing the air duct components. 1）... - Page 26 Service Manual_ 4） 从底部抓取上盖，用双手自下而上拉出上盖hold the upper cover from the bottom, pull out the upper cover 5） 上盖红色框处易损坏，拆装时勿用力过猛The upper cover red frame is easily damaged, do not force too hard when disassembling 6） 逆操作完成安装。ace the Air duct in reverse steps.
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Page 27: Vaporator And Efrost System
Service Manual_ Fan motor of air duct 风扇电机 按压卡扣（3EA），松开后盖 Press the buckle and uncover the back cover 抓住盖边，从冰箱上取下来 Grab the lid and take it off the fridge 拆除螺钉（3EA） ，从冰箱上取下风机 Remove the screw and remove the fan from the refrigerator 更换风机，逆操作完成安装 Change the fan motor, the reverse operation for assembly Evaporator and Defrost system... -
Page 28: 压缩机仓 Compressor Case
Service Manual_ Components on the evaporator 蒸发器上的部件 带有化霜传感器和熔断器的化霜加热器，可以单独更换。 Defrost heater with defrost sensor and fuse, it can be replaced separately. 1） 断开接线端子；Cut off wiring terminal 2） 断开固定传感器的扎带；Cut off the band which fixes the sensor 3） 断开固定熔断器的扎带；Cut off the band which fixes the fuse 4）... - Page 29 Service Manual_ Piping and parts in the compressor case 压缩机仓管路和零件 ④ ① ⑤ ② ③ ⑥ 1-电源线 Power cord 4-排水管 Drain-pipe 2-干燥过滤器 Dry filter 5-吸气连接管 Suction connection tube 3-压缩机 Compressor 6-接水盘 Drain tray Disassembly and assembly of compressor 压缩机的拆装 1）切断电源,取出冰箱内的物品，用胶带把全部门体固定 牢，防止冰箱倾倒时门体打开。Cut off the power, remove the goods in the refrigerator, with the tape to make the door fixed firmly and prevent the door dropping...
- Page 30 Service Manual_ 4-1）拆卸螺钉 Remove the screws(for some models) -外侧 2 个螺钉 Two screws outside -内侧 1 个螺钉 One screw inside 4-2）拆卸卡簧 Remove the metal clamp(for some models) -拆卸压缩机卡簧 Disassembly the metal clamp that is fix the electric appliance shield 5）拆卸压线卡 Remove the clipping strip Slowly pull it out 向外慢慢拔出...
- Page 31 Service Manual_ 8）松开压缩机底板的固定螺钉，将压缩机连同底板一起 从箱体上拆除。Loosen the screw of the compressor bottom plate, remove the floor together with the compressor from the box. 9）使用扳手依次拆卸❹❺❻❼螺栓，更换压缩机后逆 向操作安装。Use the wrench to remove the bolts by steps❹❺❻❼, replace the compressor and reverse process can complete installation. 10）用割管器割断冷凝器❽，用毛细管钳剪断毛细管...
- Page 32 Service Manual_ 12）更换干燥过滤器，铜-铁管路连接⓭使用银焊条，铜- Replace the filter, Cu-Fe 铜管路连接 ⓮使用铜焊条。 tubes welding ⓭ used Ag welding rod, Cu-Cu tubes welding ⓮ used Cu welding rod. 13）抽真空，真空度达到 6Pa 以下 Vacuum system, The degree of vacuum below 6Pa. 14）系统充注制冷剂。Perfusion refrigerant. 15）使用大力钳夹紧工艺管中间部位，然后对工艺管 ⓯⓰封焊。Use the vise grip pliers clamp the middle of the process pipe, then seal welding process tube⓯⓰.
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Page 33: 显控板 Display Control Board
Service Manual_ 将接水盘 1 上的卡扣退出压缩机底板安装槽，向外拉 1） 出，完成更换。Disengage the drain tray buckle out of the compressor bottom plate installation hole and pull it out, replace a new one. Display control board 显控板 Display control board 显控板——在冷藏室内 1) 用一字螺丝刀撬起显控板安装盒组件，然后取下 Use slotted screwdriver to pry up the display control panel assembly;... -
Page 34: 主变一体板 Main & Inverter Control Board
Service Manual_ 3）拧下固定显控板的两个螺钉，拆下显控板 Remove the 2 pcs fitting screws of display PCB, the display PCB can be dismantle for replacement; The reverse process can complete 逆操作完成安装 4） installation. Main & Inverter control board 主变一体板 Main control board/Inverter board 主控板/变频板在压缩机仓 拧下固定主控板安装盒的 2 个螺钉 remove the 2 1）... - Page 35 Service Manual_ 从安装盒内取出主控板/变频板（注意卡扣） ，拔下 3） 所有端子。Unplug all wiring connector, and take out the main PCB/inverter PCB The connecting terminals 连接端子的拆除方法 remove： 用针状工具挑开箭头处的卡扣，向上拆除锁扣 a needle tool to remove the lock at the arrow and remove the lock upward After the lock 锁扣拆除后按压挂钩即可拆下连接器...
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Page 36: 感温系统 Temperature Sensing System
Service Manual_ 感温系统 Temperature sensing system 传感器的位置 Position of sensors Position of sensors 传感器的位置 有 3 传感器 Have 3sensors ② ①冷冻室传感器 Sensor in freezing chamber ②环境温度传感器 Ambient temperature sensor ③冷冻室化霜传感器 Defrost sensor in freezing chamber ③ ① 传感器拆换 Replacement of sensors 冷冻室传感器... -
Page 37: Ensor Without Terminal Replacement
Service Manual_ Ambient temperature sensor 环境温度传感器 拆下铰链盖板，传感器位于冰箱顶部。The sensor is located in the hinge cover of the refrigerator top. Defrost sensor in freezing chamber 冷冻化霜传感器 化霜传感器位于蒸发器顶部。 1）断开化霜传感器的接线器 2）断开固定传感器的扎带。 3）将传感器与蒸发器分开。 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. -
Page 38: 传感器的温度-阻值对照表 Sensor R/Ttable
Service Manual_ Take out a new 取出一根新的传感器剪下感温探头 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 剥开感温探头的线束并对接 sensor and connect it. Wrap the 用绝缘胶带将连接的两根线束单独缠绕裹紧 two wires together with insulation tape. - Page 39 Service Manual_ 3.20 15.12 48.20 4.167 93.20 1.368 5.00 14.310 50.00 3.972 95.00 1.312 6.80 13.550 51.80 3.788 96.80 1.259 8.60 12.830 53.60 3.613 98.60 1.209 10.40 12.160 55.40 3.447 100.40 1.161 12.20 11.520 57.20 3.290 102.20 1.115 14.00 10.920 59.00 3.141 104.00...
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Page 40: 功能和操作 Function And Operation
Service Manual_ 功能和操作 Function and operation Display operation panel 显示操作面板 Button Icons 按键 图标 Temperature setting 温度设定按钮 ① 1 档 Gear 1 (LED4) ② 2 档 Gear 2 (LED3) ③ 3 档 Gear 3 (LED2) ④ Refrigerator/Freezer 冷藏/冷冻转换灯 Conversion Light(LED1) Temperature control 温度控制... -
Page 41: 模式设定 Mode Setting
Service Manual_ Mode setting 模式设定 9.3.1 待机模式的设定 Standby mode setting (None) 9.3.2 Locking and unlocking (None) 锁定与解锁 Defrosting function 除霜功能 冷冻化霜： 1）按照“压缩机运行”的累积时间决定冷冻室除霜 2）如果压缩机突然断电，上电时冷冻室传感器低于 0℃，则先除霜一次。高于 0℃则不除霜。 之后，按照使用情况和环境温度，除霜周期按照“压缩机启动”的累积时间从 6 到 24 小时不等。 Defrost in the freezing chamber 1）Defrost the freezing chamber as per the accumulative operation time of the compressor. 2）If power failure occurs abruptly to the compressor and the sensor in freezing chamber is less than 0 C after powering on, then first conduct defrosting once. -
Page 42: Emo Mode One
Service Manual_ forced start 1.Press and hold the button for 10 seconds mode and release it (cannot exceed 15 seconds, or the button will become invalid) to enter the forced mode, where all four LEDs will continuously flash. Press the button once, and LEDs 1, 2, and 3 enter into forced start mode will light up, 在强制制冷模式下，72 小时没有按键操作... -
Page 43: 压缩机 Compressor
3) Refrigerator is set to forced cooling mode or super cooling or super freeze mode ★When 1.1 and 1.2 are not satisfied, the compressor maintains the original state 10.2 Inverter board fault analysis 变频板故障分析 以下故障灯的状态仅适用于符合 Midea 设计规则的变频压缩机 变频板上灯的状态 故障类型 故障排查及解决方法 Troubleshooting and... - Page 44 Service Manual_ Blink twice: light 0.5 second, 2）If more than 260V, please check the extinguish 0.5 second, interval power supply and power cable time(extinguish) is 2 second 闪烁 3 次：亮 0.5 秒，灭 0.5 秒,中间 Measure the voltage between L and N 间隔(灭) 2 秒...
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Page 45: 故障排除方法 Troubleshooting Method
Service Manual_ 故障排除方法 Troubleshooting Method 11.1 Error code E0... -
Page 46: 11.2 Error Code E1 / E2 / E3 / E4 / E5 / E7 / E8 / Ee / C9 / Cc / F4
Service Manual_ 11.2 Error code E1 / E2 / E3 / E4 / E5 / E7 / E8 / EE / C9 / CC / F4... -
Page 47: 11.3 Error Code E6
Service Manual_ 11.3 Error code E6... -
Page 48: 11.4 Error Code Ef
Service Manual_ 11.4 Error code EF... -
Page 49: 11.5 Error Code Eh
Service Manual_ 11.5 Error code EH... -
Page 50: 11.6 Error Code Ep
Service Manual_ 11.6 Error code EP... -
Page 51: 11.7 Error Code Ca
Service Manual_ 11.7 Error code CA... -
Page 52: Ot Cooling In All The Chambers
Service Manual_ 11.8 所有间室都不制冷（风冷电控式）Not cooling in all the chambers... -
Page 53: 所有间室制冷差 Poor Cooling In All The Chambers
Service Manual_ 11.9 Poor Cooling in all the chambers 所有间室制冷差... -
Page 54: 冷藏室过冷 Overcooling In The Refrigerated Chamber
Service Manual_ 11.10 Overcooling in the refrigerated chamber 冷藏室过冷... -
Page 55: 冷藏室不冷或制冷差 Not & Poor Cooling In The Refrigerated Chamber
Service Manual_ 11.11 Not & Poor cooling in the refrigerated chamber 冷藏室不冷或制冷差... -
Page 56: O Working Of Compressor
Service Manual_ 11.12 No working of compressor 压缩机不工作... -
Page 57: 凝露、结霜 Condensation & Frost
Service Manual_ 11.13 Condensation & Frost 凝露、结霜... -
Page 58: Isplay Panel Failure
Service Manual_ 11.14 Display panel failure 显控面板不亮... -
Page 59: 灯不亮 Light Failure
Service Manual_ 11.15 Light failure 灯不亮... -
Page 60: O Water From The Ice Water Dispenser
Service Manual_ 11.16 No water from the ice & water dispenser 冰&水分配器取不到水... -
Page 61: O Ice From The Ice Water Dispenser
Service Manual_ 11.17 No ice from the ice & water dispenser 冰&水分配器取不到冰块... -
Page 62: 噪音 Noise
Service Manual_ 11.18 Noise 噪音... -
Page 63: 产品爆炸图和备件明细 Product Exploded View And Spare Parts List
Service Manual_ Product exploded view and spare parts list 产品爆炸图和备件明细 此部分内容请到 I-Service 系统中查看 Please log in to I-Service system to view and download these contents. URL: https://ics.midea.com https://ics.midea.com APAC: https://ics-eu.midea.com EMEA: https://ics-amer.midea.com Americas：...
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