Mitsubishi Electric MR-E55R-F-C Service Manual Download Page 51

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OPERATING PROCEDURE

PHOTOS

3. Parts inside the versa compartment : I-see sensor

Versa compartment ceiling with deodorizing filter

(1) Remove the parts in the versa compartment.
(2) Slide the two-way flexishelf toward you.

(3) Remove the screw (1 screw) and the connector.

(See photo 12, 13)

(4) Remove rivets (2 rivets) and pull down the ceiling.
(See photo 14, 15)

Push the parts firmly into place with no clearance around the

parts.

Photo 12

Photo 13

Screw

I-see sensor

Connector

Versa compartment
Supercool freezing LED

Photo 14

Photo 15

Versa
compartment
ceiling

Rivet

Deodorizing filter

I-see sensor

Versa
compartment
ceiling

I-see sensor

Versa compartment ceiling with deodorizing filter

Caution on installation

Summary of Contents for MR-E55R-F-C

Page 1: ... PRINTED CIRCUIT BOARD 26 5 4 AUTO ICE MAKER 26 5 5 FLOWCHART OF TROUBLE CRITERION 28 5 6 TROUBLE CRITERION OF MAIN PARTS 35 5 7 TEST POINT DIAGRAM OF FILTER BOARD 42 5 8 TEST POINT DIAGRAM OF CONTROL BOARD 42 5 9 TROUBLESHOOTING FOR SUPERCOOL FREEZING OPERATION 43 6 NAMES OF THE PARTS 47 7 DISASSEMBLY INSTRUCTIONS 48 HOME REFRIGERATOR No OAH110 NOTE RoHS compliant products have G mark on the spec...

Page 2: ... system Refrigerator compartment interior light Power supply Total capacity Dimensions H W D Cabinet Food liner Cabinet Freezer door Refrigerator door Freezer Refrigerator Insulation Cooling system Capillary tube Desiccant molecular sieve Refrigerant filling capacity R600a Refrigerating oil model Change pocket large Change pocket small Bottle pocket large Bottle pocket small AUTO shelf Two way fle...

Page 3: ...nt Running current Winding resistance A T 20 Model Ambient temperature Time Current Model Type Model Specification Defrost finish Thermal fuse Defrost heater 1 Defrost heater 2 Deodorizing function of defrost heater Model Type Input Revolution Number of poles Model Input Revolution Number of poles Water pipe heater Rotational heater board Vegetable compartment heater Ice making tray heater Water t...

Page 4: ...nt Running current Winding resistance A T 20 Model Ambient temperature Time Current Model Type Model Specification Defrost finish Thermal fuse Defrost heater 1 Defrost heater 2 Deodorizing function of defrost heater Model Type Input Revolution Number of poles Model Input Revolution Number of poles Water pipe heater Rotational heater board Vegetable compartment heater Ice making tray heater Water t...

Page 5: ...FUSE 73 C DEFROST HEATER 1 BLACK M M GRAY RED VIOLET YELLOW BLUE VALVE MOTOR WATER TANK HEATER R LED D BLUE BLACK S LED VIOLET BLACK PLUG F1 10A FUSE FUSE3 3A FUSE ON THE BOARD CONTROL BOARD N F BOARD INVERTER WHEN THE DOORS ARE CLOSED ICE GEAR BOX ON DISPLAY PANEL TEMP CONTROL BOARD MOTOR DAMPER RI MOTOR DAMPER VS THERMOPILE WHITE RED YELLOW SKY BLUE LIGHT BROWN WHITE WHITE RED BLUE VIOLET SKY BL...

Page 6: ...EEZER ROOM DOOR SWITCH FREEZR COMPARTMENT M FAN MOTOR WHITE RED SKY BLUE PINK YELLOW BRIGHT YELLOW VAIOLET THERMAL FUZE 73ºC F THERMISTOR DEF THERMISTOR DEFROST HEATER 2 DEFROST HEATER 1 WHITE WHITE BLACK BLACK PINK SKY BLUE BLACK WHITE WHITE WHITE WHITE WHITE WHITE LIGHT BROWN WHITE BLUE RED VEGETABLE COMPARTMENT VEGETABLE LEDS BLUE BLUE VAIOLET VAIOLET VAIOLET YELLOW SKY BLUE ELECTRIC BOX CONTRO...

Page 7: ...ay 142 179 101 760 53 633 10 331 37 333 175 41 10 75 204 314 86 104 358 5 358 8 348 255 REQUIRED SPACE FOR INSTALLATION 1821 20 685 20 211 290 950 728 100 1061 989 180 5 222 125 83 5 125 83 5 159 5 201 406 413 OUTLINES AND DIMENSIONS 3 MR E55R C Unit mm R L Refrigerator compartment Left R R Refrigerator compartment Right I Ice making compartment S Select compartment Versa compartment F Freezer com...

Page 8: ...49 655 655 655 196 203 367 601 641 599 596 655 37 728 Display 142 179 101 760 53 633 10 331 37 333 175 41 10 75 204 374 86 104 358 5 358 5 348 255 1821 20 745 20 211 335 950 728 100 1121 180 5 222 125 83 5 125 83 5 159 5 201 989 406 413 R L Refrigerator compartment Left R R Refrigerator compartment Right I Ice making compartment S Select compartment Versa compartment F Freezer compartment V Vegeta...

Page 9: ...tube 1 8 0 67 2740 mm 1 6 0 63 2740 mm Suction pipe Muffler Evaporator Dryer Cabinet pipe 150 Compressor Charge pipe Low pressure side 6 35 Charge pipe High pressure side Condenser Capillary tube Three way valve 4 0 MR E55R C MR E60R C ...

Page 10: ...g operation starts To reset the settings when initialled press and simultaneously for 3 seconds The temperatures of the refrigerator vegetable and freezer compartments will be set to Middle The Fast Cooling operations in all the compartments will stop USEFUL FUNCTIONS Press and simultaneously for 3 seconds Child lock lamp turns on 1 2 Press several times until is displayed Stop ice making 3 Press ...

Page 11: ...ds until a beep sound is heard Room display blinks every 10 seconds in fine adjustment mode Fine adjustments of temperature Follow the same operation procedure for temperature adjustment Release Follow the same procedure as Setting and the finely adjusted temperatures are reset for refrigerator compartment freezer compartment and versa compartment at once Temperature is adjusted in approximately 0...

Page 12: ...rtment s door open Leave the ice making compartment s door open Leave the ice making compartment s door open Leave the ice making compartment s door open Simultaneously press and for 3 seconds Simultaneously press and for 3 seconds Simultaneously press and for 3 seconds Simultaneously press and for 3 seconds Press Press Press for 3 seconds Press for 3 seconds Display Setting method Mode Door Butto...

Page 13: ...dysfunction Check the sound level when rotational speed is stabilized Switching ON OFF the box fan In this mode box fan can be switched on and off at each press of Box fan The ON OFF state is displayed with on the display panel ON OFF Display of Lighting Not lighting 2 Compressor s rotational speed change mode Setting With the ice making compartment s door opened simultaneously press and for 3 sec...

Page 14: ...al number is assigned to each compartment thermistor which is used in thermistor temperature mode and set temperature adjustment mode besides damper operation mode The sum of the corresponding values of the lighting indicators is the damper s serial number Room Display Corresponding values 8 4 2 1 Serial number Assigned compartment Damper operation mode 1 Refrigerator compartment 2 Slide chilled c...

Page 15: ...In this mode each press of switches on and off the refrigerator fan motor The ON OFF state of the refrigerator fan motor is represented with display Fan motor in the unit Lighting ON Not lighting OFF Release With the ice making compartment s door opened press and simultaneously for 3 seconds until a beep sound is heard The screen returns to the normal temperature display The function is automatica...

Page 16: ... each compartment thermistor which is used in damper operation mode and set temperature adjustment mode besides thermistor temperature mode The sum of the corresponding values of the lighting indicators is the thermistor s serial number Room display Corresponding values 8 4 2 1 Serial number Assigned compartment Thermistor temperature check mode 1 Refrigerator compartment 2 Slide chilled compartme...

Page 17: ... a in numeric order repeatedly 1 refrigerator compartment 11 thermopile Refrigerator compartment slide chilled compartment ice making compartment versa compartment vegetable compartment freezer compartment defrosting ice tray outdoor air deodorization thermopile When this mode is set the display always starts from the refrigerator thermistor Slide chilled compartment thermistor can be selected how...

Page 18: ...de between history display mode and order of occurrence mode b Error code tens place It displays the tens place of error code It applies the same representative method as the error display of self check c Error code ones place It displays the ones place of error code It applies the same representative method as the error display of self check Switching over the mode Press to select one of the erro...

Page 19: ... s door opened press and simultaneously for 3 seconds until a beep sound is heard The screen returns to the normal temperature display The function is automatically released in one hour Although unplugging and plugging the power code can release this function it is recommended to follow the procedure above for protection of the compressor a Compartment serial number b Set temperature adjustment le...

Page 20: ...t 6 Freezer compartment in numeric order repeatedly Refrigerator compartment slide chilled compartment ice making compartment versa compartment vegetable compartment freezer compartment Set temperature adjustment operation of slide chilled compartment is possible however it is ineffective because slide chilled compartment thermistor is not installed 3 Select the adjustment level of set temperature...

Page 21: ... the ice making operation Synchronizing the buzzer sound the indicator s of the compartment s with door s that are is left open blink s to alert 2 Buzzer sounds when a trouble is found in refrigerator fan motor or in box fan The buzzer sounds every time the door is closed until normal operation is obtained Check the error code by following the steps in Specification of display in self check result...

Page 22: ...eater Water pipe Vegetable compartment heater etc Water pump motor Note2 If any abnormality is found when plugging the power cord compressor and fan motor are suspended for 10 minutes Note3 The alarm beeps when some abnormalities motor locked have occurred at the refrigerator fan motor or box fan restarts its normal operation Note4 If any abnormality occurs in compressor s inverter circuit the com...

Page 23: ...ntrol board and operation P C board They transmit and receive data that has nothing to do with settings They cannot transmit and receive data each other for about 2 seconds 1 Connector CN10K CN9S CN5D on con trol board 5 pin wire to wire connector hinge 5 pin connector on operation P C board Repair the contact failure Keep the same operation as the one before the communication error has occurred 2...

Page 24: ...rouble of defrost heater 1 6 When defrosting is not finished in 2 hours 1 Connector CN2A on control board Defrost heater plug and receptacle 1 pin wire to wire connector Thermal fuse 4 pin wire to wire connec tor Repair the contact fail ure The defrost heater is stopped and if the next defrosting finishes in 2 hours the error code will disappear 2 Check the resistance of defrost heater Replace 3 C...

Page 25: ...t approx 50 380 V DC E 52 Trouble of inverter software reset function When the inverter driv ing software malfunc tions E 53 Trouble of startup syn chronization or overcurrent detection When there is no cur rent at compressor startup When phase current exceeds 5 5A at com pressor startup When phase current exceeds 3 3A during com pressor operation When current of 5 3A or more runs into the bus bar...

Page 26: ...ter board Water pipe heater Ice making tray heater For 5V DC system Freezer compartment thermistor Refrigerator compartment thermistor Defrost thermistor Door switch for refrigerator com partment ice compartment freezer compartment Ice tray thermistor Ice making compartment thermistor Vegetable compartment thermistor Position specifying switch in ice maker gear box Versa compartment thermistor For...

Page 27: ...eller Tank pipe Cover Tank pipe Water tank Water pump Light type bacteria removing filter 3 Reverse steps to replace the pipe Water pipe Tank holder Side A Side B Water pipe Replace the water pipe Be sure that sides A and B fit flush to each other 2 Separate pieces and wash with water Packing Aluminum pipe Twist the aluminum pipe to replace it 5 Troubleshooting for automatic ice maker Trouble with...

Page 28: ...mbined with fan grille assembly Is the motor damper for refrigerator compartment slide compartment covered with frost Expose the damper for refrigerator compartment slide com partment so that its operation can be visibly checked and conduct an ice making test Does the baffle open close Wait 1 minute for self check See Self check method and its operation Ice making test operation at page 22 Dip ref...

Page 29: ...minal on the wiring side Check for short and or open circuit on the motor protector Detach connector CN50G on con trol board and check the resistance respectively between terminals of and approx 12 4 Check the error display of self check after turning on and off the power supply With all the connectors connected Inverter related parts may be defective Conduct ice making test operation See pages 30...

Page 30: ...the filter board Yes Normal Replace the control board No Trouble of inverter software reset function When the inverter driving software mal functions due to electric noise Unplug the power cord and wait more than 10 minutes then plug it again No error code display Explain to customer E53 Compressor motor gets locked Defective circuit on control board Defective con tact of CN50G on control board Co...

Page 31: ...n such a case perform the ice making test operation to check what the error is At the same time also confirm that the compressor is operating for more than 3 minutes and each compartment is getting cooled start Connector CN50G on the control board is properly connected The connector of compressor is properly connected Remove the CN50G connector on the control board and measure the winding resistan...

Page 32: ...ected Replace refrigerator fan motor CN9S CN5D Control board 8 pin connector 4 pin connector Refrigerator fan motor Reed switch board 3 pin connector 4 pin connector 2 pin connector Refrigerator compartment right and left Ice making compartment door switch Freezer compartment door switch 2 Unplug and plug the power cord to check if box fan is rotating 3 2 Check if there is continuity between therm...

Page 33: ... CN5D and measure the resistances between and and between and Check that the winding of motor damper for vegetable compart ment versa compartment has a resistance of approx 415 0 or Is 6 pin connector which is in connector cover on the back of ice maiking compartment con nected properly 6 pin connector is connected to motor damper Refer to the figure below Defective thermistor Replace the vegetabl...

Page 34: ... Refrigerator compartment Versa compart ment Ice making compart ment Attach a magnet bar here 1 Defective thermistor Replace the versa compartment thermistor Check the versa compartment thermistor Dip the versa compartment thermistor into the ice water 0 and disconnect 6 pin connector for fan grille at the back of versa compartment Measure the resistance between terminals white and white Resistanc...

Page 35: ...rmal Abnormal faulty Between and GND and IC Power About 12k Between and open circuit Between and short circuit 0 Measure the resistance with a tester Ambient temperature Room temperature Between and Power and IC Power 1 1 2 3 4 2 3 4 Pin No IC IC Power Power FG GND Measure the resistance with a tester Machine chamber fan motor In the machine chamber at the rear side of the frame Measure the resist...

Page 36: ...nt ice making compartment In the fan grille for freezer compartment Connector is at the left back bot tom of refrigera tor compartment Measure the winding resistance Normal Abnormal faulty 415 Approx Open or short circuit 0 Winding Blue White Red Yellow Red Yellow Blue White Motor damper for versa com partment veg etable compart ment In the fan grille for freezer compartment Connector is at the ba...

Page 37: ... lower temperature than the set temperature for vegetable compartment Defrost heater 1 At the drip tray under the evap orator of the freezer compartment Rated input 150 The heater is energized while defrosting Defrosting is finished when the evaporator is 14 1 5 or more W Operation method Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty 81 Approx Ope...

Page 38: ...ure thermistor resistance using a tester The relation between resistance and tem perature is as shown on the left side 0 0 5 10 15 20 25 30 35 10 20 30 10 20 Thermistor resistance values against temperature Outside air thermistor In the operation P C board Resistance values Temperature Inner thermistor Refrigerator compartment Ice making tray thermistor Freezer compartment Defrosting Versa compart...

Page 39: ...water is supplied to the ice tray After the ice level sensor lever detects that ice storage becomes full While the door is kept open for maximum of 5 minutes Abnormal criterion When the door is opened LED goes out within 5 minutes Make sure if the connector is securely connected LED Note LED cannot be replaced individually because it is embedded in the tank holder Photosynthesis LED 2 pieces LED l...

Page 40: ...ng and or freezer compartment is opened for 5 minutes at the maximum This LED and the versa compartment supercool freezing LED light up simultaneously Abnormal criterion The light does not go on at the above timing In the refrigerator compartment in the control panel which is towards the back of the compartment Refrigerator deodorization LED control board Versa compartment supercool freezing LED 1...

Page 41: ... the power is reset 2 Ice making test Check the operation right after the ice making test Operation of the i see sensor motor The operation pattern during the operation checking is different according to which starting procedure 1 or 2 was selected 1 The operation was started by the power reset The motor moves from back to front The motor moves from front to back and stops at the prescribed positi...

Page 42: ...compartment Thermopile Object Thermopile Thermistor Freezer compartment thermistor Ice making compartment thermistor Vegetable compartment thermistor Versa compartment thermistor Defrost thermistor Ice making tray thermistor Refrigerator compartment thermistor GND 5V com Damper for vegetable compartment versa compartment Damper for ice making compartment refrigerator compartment Interior LED left ...

Page 43: ...ng the supercool freezing mode Since this function freezes the food at a slow speed it takes a long time to complete freezing Food with a low coagulating temperature may not freeze in the soft freezing mode 3 Food and drink freeze hard They are not maintained in the supercooled state Water in a plastic bottle freezes hard Drinks freeze hard The user did not check the food and drink right after the...

Page 44: ...from the air outlet on the back and ceiling of the versa compartment When fast cooling ends if the food temperature is low enough the supercool freezing control will start If the control performs as it is mentioned above the airflow control is working properly and the supercool freezing function is normal Second diagnosis Diagnosis made with food Prepare two pouches of ready meal style curry Freez...

Page 45: ...e thermopile s individual variation does not affect the refrigerator If no problem is found by the check it is generally regarded as normal If the check results in normal it can be regarded as normal even if the detected temperature found by the check is slightly out of the normal range 2 Diagnosis 1 Procedure for Response check 1 Procedure Step 1 Start the Thermistor check mode Step 2 Confirm tha...

Page 46: ... Information about the object according to the ambient temperature Vtobj unit V Each voltage value is a representative value as a guide Values of Vtobj in the following chart are output when the object is placed under the entire field of view of the thermopile Temperature of the object 20 10 0 10 20 30 Ambient temperature 1 077 1 298 1 565 1 879 2 24 2 647 Vtamb V 20 2 225 1 66 1 02 0 302 15 2 498...

Page 47: ...lf Automatic ice maker Ice making compartment Freezer compartment Freezing case top Adjustable partition Freezing case bottom For freezing only Freezable 500 ml PET bottles can be placed in upright Bottle pocket large AUTO shelf Two way flexishelf Slide case Vegetable case Aluminum tray Water tank app 1 2L Water supply port cap Water supply pipe Water tank lid Pipe Water supply pump Light type bac...

Page 48: ...the lever to the right and slide the AUTO shelf to the uppermost position See photo 1 Push the catches 4 places inward and remove the AUTO shelf from the metal stoppers Lift up and remove the AUTO shelf toward you See photo 2 Remove the metal stoppers in front back left and right sides of the unit First install the metal stoppers to the unit Then place the AUTO shelf on top and push the AUTO shelf...

Page 49: ... front catches on both sides Remove the slide chilled case lid Remove the vertical partition Photo 5 Removing the AUTO shelf from the AUTO shelf frame Remove the catches in the back 3 places and lift up the AUTO shelf as shown in photo 6 See photos 5 6 The catches in front 4 places will detach Pull the AUTO shelf toward you to remove Photo 6 AUTO shelf AUTO shelf frame AUTO shelf AUTO shelf frame ...

Page 50: ...ing the catches at sides of the control panel and remove the tabs in order of bottom top See photo 10 Catch Catch Rivet Rivet Mirror hinge Rivet Control panel Screw Catches Catch Deodorizing unit thermistor attachment Screws Catches Catch Catch Catch Cover Control panel Remove the screw on the right or left LED See photo 9 Slide upward the right or left interior LED while pushing up the bottom and...

Page 51: ...ctor See photo 12 13 4 Remove rivets 2 rivets and pull down the ceiling See photo 14 15 Push the parts firmly into place with no clearance around the parts Photo 12 Photo 13 Screw I see sensor I see sensor Connector Versa compartment Supercool freezing LED Photo 14 Photo 15 Versa compartment ceiling Rivet Rivet Deodorizing filter I see sensor Versa compartment ceiling I see sensor Versa compartmen...

Page 52: ...photo 16 5 Remove screw 2 screws at the front of the refrigerator and 4 rollers Remove the catches at the both sides of partition I S cover Remove them with a driver or another tool which is wrapped in cloth in order to protect the cover surface from scratches See photo 17 6 Remove the catches on the upper and lower right of the parti tion I S see photo 18 and then slide the partition I S toward r...

Page 53: ...et to remove the cover from the fan grille See photo 21 10 To remove the fan grille remove the screws 4 screws on the right left bottom the lower catches 3 places and the connectors 4 connectors in the connector area See photo 21 on the upper left See photo 22 After removing the fan grille attach the lead wire on the side of the refrigerator with a tape to protect it from getting wet with evaporat...

Page 54: ... con nector on the contouring section of main refrigerator housing Stow the lead wires in the contouring section and cover it with seal tape Evaporator outlet pipe Gray tube Unit outlet pipe No marking Exit side Evaporator inlet pipe Black tube Unit inlet pipe With marking Entry side 30 Evaporator Defrost heater 1 DEF thermistor Defrost heater 2 Brazed section Catch to fix the evaporator Catch to ...

Page 55: ...ator housing Slide the defrost heater out towards you Remove the defrost heater from the heater roof See figure 3 Remove the aluminum tape then the drip tray See figure 4 Installation Attach the drip tray so that it closely fits into the right place of the main refrigerator housing See figure 4 Loosen the lead wires to prevent water from entering the glass tube Make sure the orientation of the def...

Page 56: ...s of the defrost thermistor at the base of the 4 pin connector See photo 29 Installation Connect the replacement defrost thermistor to the evaporator connector See photo 30 Secure the defrost thermistor to the muffler with 3 nylon fasteners large provided with the replacement defrost ther mistor Then tie the lead wires of defrost thermistor and the evaporator pipe heater together with a nylon fast...

Page 57: ...crew 1 screw and the catch 1 place See photo 36 Photo 33 Rivet Rivet Vegetable compart ment ceiling Rivet Connector cover V Rivet Photo 34 Vegetable compartment ceiling Screw Vegetable compart ment thermistor Catch Screw Vegetable com partment LED Vegetable compartment ceiling Photo 35 Photo 36 Vegetable compartment ceiling Connector cover V Vegetable compartment LED Vegetable compartment thermist...

Page 58: ...e it Note Put the lead wires in place so that they do not get caught in water supply hole Put the tank holder in place so that the water does not leak from it Door switch 8 Insert a flat blade screwdriver between the switch and the body to remove the door switch Photo 37 Figure 5 Tank holder Door switch Screw Tank holder 6 Operation panel How to remove 1 Slide the operation panel in the direction ...

Page 59: ...If the refrigerator door is closed with the board raised the rotational heater board may hit against the left door of refrigerator and be damaged Though the anti condensation heater may make rotational heater board hot it does not affect food inside Refer to the right figure when installing the rotational heater board See figure 6 Loosen the fixing screw and adjust a vertical upper and lower motio...

Page 60: ...ors in the appropriate positions 4 Remove screw 1 screw See photo 44 Wash the drain pan with water in case it is dirty 5 Remove the drain pan while bending upward the wiring inside the drain pan Note Avoid bending or crushing the piping 6 Remove the screws 2 screws See photo 45 7 Remove the reactor by removing the holders 2 positions and the connector See photo 46 8 Remove the connector 9 Pull out...

Page 61: ...ipe Low pressure side Box fan Reactor Adjust piping and secure clearance of about 10 to 15 mm around pipes Make sure clearance is secured especially between the following parts Between charge pipe and compressor cover bottom pan compressor or discharge pipe Between suction pipe and compressor cover or capillary tube Between capillary tube and three way valve or lead wires Attach U washer as shown ...

Page 62: ... Replace roller set of the right and left versa compartment doors a To adjust about 0 5 mm replace with roller set C b To make large adjustment replace with roller set D Replace lower roller set of the ice making compartment door c To adjust about 0 5 mm replace with roller set A d To make large adjustment replace with roller set B Replace roller set of the right and left versa compartment doors a...

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