Mitsubishi Electric Home Refrigerators

Introduction

This service manual provides detailed information for the Mitsubishi Electric Home Refrigerators, models MR-CX306EM-ST-A and MR-CX306EM-W-A. It includes specifications, outlines, wiring diagrams, refrigerant circuits, parts identification, troubleshooting, disassembly instructions, and parts lists.

Table of Contents

• 1. Specifications
• 2. Outlines and Dimensions
• 3. Wiring Diagram
• 4. Refrigerant Circuit
• 5. Name of the Parts
• 6. Trouble Shooting
  • 6.1 Trouble Criterion of Main Parts
  • 6.2 Function of Operation Panel
  • 6.3 Flow Chart of Self Check
  • 6.4 Test Point Diagram of Main Control Board
• 7. Disassembly Instructions
• 8. Parts List

Parts List: Door, Body Parts (Model: MR-CX306EM-A)

This section details the components of the refrigerator door and body.

• 1: Door (likely freezer or main compartment)
• 2: Door Handle/Grip (upper)
• 3: Door Handle/Grip (lower)
• 4: Hinge component or cover
• 5: Refrigerator compartment interior structure
• 6: Shelf/Drawer support
• 7: Drawer slide mechanism
• 8: Drawer slide mechanism
• 9: Interior compartment structure
• 10: Shelf
• 11: Drawer
• 12: Crisper/Vegetable drawer
• 13: Drawer slide component
• 14: Drawer slide component

Parts List: Body Parts (Model: MR-CX306EM-A)

This section details internal body components.

• 1: Control panel housing/cover
• 2: Fan housing/cover
• 3: Mounting bracket
• 4: Evaporator fan assembly
• 5: Air duct component
• 6: Defrost heater/component
• 7: Water tank/dispenser component
• 8: Compressor mounting bracket/insulation
• 9: Refrigerant pipe connection point
• 10: Evaporator coil assembly
• 11: Drip tray/drainage component
• 12: Lower front panel/base
• 13: Kick plate/base grille
• 14: Foot/leveling leg
• 15: Mounting bracket/clip
• 16: Fastener/clip
• 17: Base support
• 18: Rear panel component
• 19: Top cover/panel
• 20: Air filter housing
• 21: Light fixture housing
• 22: Door seal component
• 23: Internal shelf support
• 24: Internal partition
• 25: Internal drawer slide rail
• 26: Water inlet valve component
• 27: Temperature sensor
• 28: Wiring harness clip
• 29: Insulation panel
• 30: Fastener/screw
• 31: Mounting bracket
• 32: Drain tube
• 33: Base cover component
• 34: Front base trim

Parts List: Electrical Parts (Model: MR-CX306EM-A)

This section details the electrical components.

• 1: Condenser fan motor
• 2: Condenser fan blade
• 3: Wiring harness
• 4: Temperature sensor (ambient)
• 5: Defrost thermostat
• 6: Main control board (PCB)
• 7: Power supply module
• 8: Relay/contactor
• 9: Compressor
• 10: Compressor start/run capacitor
• 11: Wiring harness connector
• 12: Internal wiring loom
• 13: Door switch/sensor
• 14: Light bulb/LED module
• 15: Display board connector
• 16: User interface board (display/buttons)
• 17: Ice maker assembly (if applicable)
• 18: Water inlet valve
• 19: Heating element (defrost)
• 20: Fan motor (evaporator)
• 21: Fan blade (evaporator)
• 22: Control board mounting bracket
• 23: Motor driver board
• 24: Transformer
• 25: Fuse/circuit breaker

Parts List: Accessory and Unit Parts (Model: MR-CX306EM-A)

This section details accessory and unit components, including refrigerant circuit parts.

• 1: Shelf (glass)
• 2: Shelf (glass)
• 3: Shelf (glass)
• 4: Shelf (glass)
• 5: Drip tray/water collection pan
• 6: Drawer (vegetable/crisper)
• 7: Drawer (general purpose)
• 8: Drawer (freezer)
• 9: Door bin (upper)
• 10: Door bin (middle)
• 11: Door bin (lower)
• 12: Refrigerant pipe assembly (main unit)
• 13: Compressor mounting bracket
• 14: Discharge pipe (refrigerant)
• 15: Heat-shrink tube
• 16: Suction pipe (refrigerant)
• 17: Heat-shrink tube
• 18: Discharge pipe (refrigerant)
• 19: Heat-shrink tube

Parts List: Packing Parts (Model: MR-CX306EM-A)

This section details the components used for packaging the refrigerator.

• 1: C.F.B Box Assembly
• 2: Top Cushion
• 3: Packing Cover
• 4: Bottom Cushion
• 5: C.F.B Pallet Assembly
• 6: C.F.B Top Cover (with "NO STEP ON" marking)
• 7: Side Cushion Assembly

Note: This manual is applicable for models sold in Australia & New Zealand.