Changes for the Better MITSUBISHI ELECTRIC HOME REFRIGERATORS SERVICE MANUAL 2012 NO.SM-RE-1206 Models MR-C375C-W-A MR-C375C-ST-A MR-C375C-OB-A MR-C375CL-W-A MR-C375CL-ST-A MR-C405C-W-A MR-C405C-ST-A MR-C405CL-W-A MR-C405CL-ST-A CONTENTS 1. SPECIFICATIONS.................................................... 1 2. OUTLINES AND DIMENSIONS.................................. 3 3. WIRING DIAGRAM.................................................... 5 4. REFRIGERANT CIRCUIT........................................
1 SPECIFICATIONS 1-1 SPECIFICATIONS MR-C375C-A, MR-C375CL-A Power supply Total capacity Dimensions (HXWXD) Cabinet Food liner Cabinet Refrigerator door Insulation Vegetable door Freezer door Cooling system Freezer Refrigerator Evaporator Condenser Defrost system Drain Temperature control system Refrigerator room light 230-240V 50Hz GROSS (AS) 375 (R : 197 V : 75 F : 103) 1678 x 600 x 656 Acrylic resin coated steel ABS resin Foamed cyclopenthane Foamed cyclopenthane Foamed cyclopenthane Foamed cyclopentha
MR-C405C-A, MR-C405CL-A Power supply Total capacity Dimensions (HXWXD) Cabinet Food liner Insulation Cooling system L mm.
1-2 ELECTRICAL PARTS SPECIFICATION MR-C375C-A , MR-C375CL-A Compressor Model Power supply Rated input Starting current Rated current Winding resistance (A.T. 20 oC) W A A PTC RELAY Motor protector Model Ambient temperature Time Current o C Sec. A Running capacitor Capillary tube Dehydrant Molecular sieve Refrigerant HFC.
MR-C405C-A, MR-C405CL-A Compressor Model Power supply Rated input Starting current Rated current Winding resistance (A.T. 20 oC) W A A PTC RELAY Motor protector Model Ambient temperature Time Current o C Sec. A Running capacitor Capillary tube Dehydrant Molecular sieve Refrigerant HFC.
2 OUTLINES AND DIMENSIONS Unit : mm MR-C375C-A, MR-C375CL-A PLUG CORD LENGTH 600 20 124 1678 20 666 5 5 100 REQUIRED SPACE FOR INSTALLATION 50 381
Unit : mm MR-C405C-A, MR-C405CL-A PLUG CORD LENGTH 600 20 1248 1798 20 381 666 6 5 100 REQUIRED SPACE FOR INSTALLATION 50
3 WIRING DIAGRAM (SKELETON WIRING DIAGRAM) MR-C375C-A, MR-C375CL-A MR-C405C-A, MR-C405CL-A 7
(ACTUAL WIRING DIAGRAM) MR-C375C-A, MR-C375CL-A MR-C405C-A, MR-C405CL-A Remark GY W R SB P LB V = = = = = = = GRAY WHITE RED SKY BLUE PINK LIGHT BROWN VIOLET BK OR Y YG LG BY BU = = = = = = = BLACK BR = BROWN ORANGE YELLOW YELLOW/GREEN LIGHT GREEN BRIGHT YELLOW BLUE 8
4 REFRIGERANT CIRCUIT MR-C375C-A, MR-C375CL-A MR-C405C-A, MR-C405CL-A Muffler Evaporator Cabinet pipe Capillary tube Suction pipe Compressor Charge pipe (High pressure side) Dryer Charge pipe (Low pressure side) 9
5 NAMES OF PARTS MR-C375C-A MR-C375CL-A MR-C405C-A 10 MR-C405CL-A
6 TROUBLE SHOOTING 6.1 TROUBLE CRITERION OF MAIN PARTS MR-C375CC-AMR-C375CL-A MR-C405C-A MR-C405CL-A Components / Part Name Parts Mounted Position Check Method and Criterion Compressor in Compressor Model DHS66C10RAW the machine Rated input W 113/113.5(220/240V 50Hz) chamber at the Starting current A 7.78./8.55(220/240V 50Hz) rear side of Rated current A 0.70/0.64(220/240V 50Hz) the frame Abnormal (faulty) Normal Auxilialy wiring Main wiring 18.4 Ω (Approx.) Auxilliary wiring 18.
Components/ Part Name Check Method and Criterion Parts Mounted Position Model FBA12J12VXC Type DC brushless In the fan grille of the refrigerator compartment. o Measure the resistance with a tester.(Ambient temperature:Room temperature 15 C ~ 25oC) Normal Refrigerator fan motor Abnormal (faulty) Between 3 - 1 (GND and Vcc): About 25kΩ Between 3-1 : open( ∞ Ω ) or between 2-1 : short ( 0 Ω) Model 4715JL04WS16G51 Type DC brushless In the machine chamber at the rear side of the frame.
Components/ Part Name Parts Mounted Position Check Method and Criterion Measure the resistance with a tester.(Ambient temperature:Room temperature 15oC ~ 25oC) Black Black Water pipe heater Operation method Normal Abnormal (faulty) 1.3 kΩ (Approx.) Open (∞ Ω ) At the left bottom of vegetable compartment The heater is turned on when the temperature of tray for automatic ice making tray is about 10 oC or less Rated input operation method Defrost Heater 155 W Power ON after defrosting o (14 + 1.
6.2 FUNCTION OF OPERATION PANEL (1) Normal operation (2) Ice making test / Self-check 2.1 Setting Press the switch for 5 seconds 2.2 Operation and display During automatic ice making test,ice making stop LED blink. When somthing is faulty, the trouble is indicated with blinking number of ice making stop LED.(See page 13,14) Self-check finishes automatically. LED trouble display is also automatically released 10 minutes later. However, the abnormal part has not been repair yet.
6.3 FLOW CHART OF SELF-CHECK (1) Trouble shooting with self-check This refrigerator has self-check feature to clarify and indicate where & what the trouble is. It can be checked that there is something wrong with electronic circuit and electric parts. Ice making stop LED Refrigerator Freezer Self-check Refrigerator room Press Ice making stop button Slide room Ice maker off No Was trouble displayed? Yes Locate the trouble according to LED indication.
(3) LED trouble display and the check point (3.1) LED trouble display : follow the procedure of "self check method Ice making stop LED Refrigerator Freezer Refrigerator room and its operation" at page 11. Trouble is indicated by the blinking number of ice making stop LED. ∗ When several troubles occur, smaller blinking number of LEDs has to be indicated first. Slide room Ice maker off (3.2) Check point and treatment Function Explanation Detecting method and corrective NG points Normal NO 1.
Function Explanation Detecting method and corrective NG points Display function of LED Thermistor (R) NG 4 Blinks 1. The Thermistor (R) connector lead wire isn't orderly. 2. Thermistor (R) NG (break or short) 3. PCB plate (Ref Con assy) NG 1. Check all points of Thermistor (R) connector lead wire, may be unlock and struck insert. 2. If the resistance of Thermistor (R) is NG, should be replaced the Thermistor (R) and re-check the resistance. 3. If the resistance is OK.
6.
7 DISASSEMBLY INSTRUCTIONS MR-C375C-A MR-C375CL-A MR-C405C-A MR-C405CL-A Plug out before work. Check the automatic ice-maker by pressing ice making stop switch. In assembling & disassembling parts use several kind of screws and rivets. Do not mistake to use them. A B 4 x12 Stainless steel D C Rivet 4 x12 (Black) With metal washer Rivet OPERATING PROCEDURE PHOTOS 1. Detachment Control PCB parts Photo 1 7 fixing screws Compressor cover (1) Detach 7 pcs.
OPERATING PROCEDURE 3. PHOTOS Detachment the Vegetable case parts Photo 5 (1) Detach parts inside vegetable compartment (Vegetable case, Fruit case). Catches Vegetable case cover (2) Detach the door of vegetable compartment. (3) Detach rivet (C) at the right and unhooking 2 catches at front, (center and left). (Photo 5) Rivet Caution on assembly [1] Be sure to put vegetable case cover on the catches at the rear of V-room vegetable compartment.
OPERATING PROCEDURE Defrost heater, Drip tray PHOTOS Aluminium Photo 8 Drip tray (7) Peel off the tape that fixes lead wires on the side wall of the vegetable compartment. Then take out defrost heater Tape Tape together with heater roof. Detach heater roof and Heater cover from Defrost heater. Heater roof Detach the drip tray after removing the defrost heater. Defrost thermistor (8) Cut the binder and disconnect the connector.
OPERATING PROCEDURE 6 Detachment the vegetable compartment parts PHOTOS Photo 11 (1) Detach the door of the vegetable compartment. Water pipe (lower) (2) Detach a rivet (C), pipe cover and connector. Then Pipe cover remove the water pipe lower. Water tank tray Water pipe (3) Pull Tank tray to R-room upper and take it out together with the water pipe. Vegetable case room Photo 12 Caution on assembly Water pipe (1) Fit the water tank tray properly in order to prevent a water leak.
OPERATING PROCEDURE Compressor cover (1) Remove 7 screws for compressor cover at the back of the refrigerator. Fan motor of compressor compartment (2) Detach the Elect cover (3) Detach the Connector. (4) Remove a screw that fixed bell mouth. Pull out the whole fan motor and disconnect the terminals. (5) Pull out the fan from the fan motor. (6) Detach the lid-fixing screw to take out the fan motor. 7 Detachment compressor. (1) Collect gas from the charge pipe on the high pressure side.
8 PARTS LIST DOOR, BODY PARTS MR-C375C-A MR-C375CL-A MR-C405C-A MR-C405CL-A 24
NO. PART NO.
BODY PARTS MR-C375C-A MR-C375CL-A MR-C405C-A MR-C405CL-A 26
Q'TY/UNIT NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 PART NO.
ELECTRICIAL PARTS MR-C375C-A MR-C375CL-A MR-C405C-A MR-C405CL-A 28
Q'TY/UNIT NO. 1 2 PART NO.
ACCESSORY AND UNIT PARTS MR-C375C-A MR-C375CL-A MR-C405C-A MR-C405CL-A 30
RoHS W ST 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 GLASS SHELF R ASSY SLIDE SHELF (REAR) 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 SLIDE SHELF (FRONT) 1 1 1 1 1 1 1 1 1 SLIDE CHILLED CASE 1 1 1 1 1 1 1 1 1 VEGEATABLE CASE COVER 1 1 1 1 1 1 1 1 1 FRUIT CASE 1 1 1 1 1 1 1 1 1 ICE BOX SHEET 1 1 1 1 1 1 1 1 1 ICE BOX 1 1 1 1 1 1 1 1 1 FREEZING CASE (UP) 1 1 1 1 1 1 1 1 1 ICE SPOON 1
PACKING PARTS MR-C375C-A MR-C375CL-A MR-C405C-A MR-C405CL-A NO STEP ON 6 C.F.B TOP COVER R 1 C.F.B BOX ASSY L 2 TOP CUSHION 3 PACKING COVER 4 BOTTOM CUSHION 5 C.F.
NO. PART NO. RoHS PART NAME KIERN4970 1 2 3 4 5 6 KIERN5970 KIETY7970 KIERN6970 KIERN7970 KIERN8970 KIERN9970 KIERP0970 KIERP1970 KIEP89979 KIEHN8973 KIEP89978 KIEP89974 KIEP89975 SPEC Q'TY/UNIT PRICE/PIE MR-C375CL-A MR-C405C-A MR-C405CL-A CE(US$OB W ST W ST W ST FCA) MR-C375C-A W 1 ST 1 1 1 C.F.B BOX ASSY 1 1 1 1 TOP CUSHION PACKING COVER BOTTOM CUSHION C.F.B PALLET C.F.
MITSUBISHI ELECTRIC CORPORATATION HEAD OFFICE : MITSUBISHI DENKI BLDG., MARUNOUCHI,TOKYO 100. TELEX : J24532 CABLE MELCO TOKYO Distributed by MITSUBISHI ELECTRIC AUSTRALIA PTY LTD.
