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SERVICE MANUAL MR-G50M-T-C MR-G50M-W-C

1. 2 Automatic ice maker circuit about 100 cubes With 8 cube ice tray Tank heater LED for MA Gu e Water pipe heater removal from water CN7S Ae K OOH alk M Water pump motor OOS o 8 pin connector 6 pin connector 6 pin connector penn 5 GYISI NV 0 Compal rn thermistor 9 CN9D 99 e e e QN ce tray thermistor pio oo olo eras OO AID ole ce making 1 0 gear box OO KD KD DIO 8 pin connector 6 pin connector 17 3 Operation by ice making test RT pi Press TE switch for 5 seconds or more See Self check and error display method and operation D Ice making test operation at page 14 Ice making test completes about 20 seconds later LT Ice stock detective lever detects the amount of ice Detective lever once come down to detection point then return to the original position Completion When abnormality occurs the error code is displayed on the panel Inspect the abnormal points by referring to page 15 16 S pcc Check here Upper freezer compartment Lower left part of refrigerator compartment Check point of automatic ice maker operation The ice t
2. Identifying roller sets Marking uu LH RH A Roller set A 0 5mm to the right 09 10 Marking x E Marking Roller set 0 5mm to the right 11 12 ngno t XE pP d M Roller set C 0 5mm to the right 13 14 right 1 p right 1 left 0 5 13 left 0 5 14 Roller set D 0 5mm to the right 15 16 lett 1 0 15 lett 1 0 16 Check points after adjustment e When adjustments such as hinge position have been made without food in the door pockets confirm the door position again with food stored inside e When the refrigerator is moved to make adjustments in the back bolts floor may be damaged due to objects trapped in the caster It is recommended to take preventive measures such as cleaning around the refrigerator and covering the floor with boards before moving the refrigerator e After adjusting the refrigerator compartment doors confirm auto closer operation 43 s MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jul 2007 No OAH094 7 Made in Japan New publication effective Jul 2007 Specifications subject to change without notice
3. 6 7 TEST POINT DIAGRAM OF FILTER BOARD MR G50M C AC110V 14 Cyl Ce LR C CH9 RED Earth S JF AMODC4TIGXX GN12 WHT wo 110V 31 m a m 9 O d XX 0 02 3N d N NIXOL 6 8 TEST POINT DIAGRAM OF CONTROL BOARD MR G50M C DNG DC412 20V DC280 330V Inverter circuit DC 5V Inverter circuit CN50G Compressor C201 c lt s phase phase phase gt 1 2 Dax gt s a oc 0 55 icoto 60 5 5 O28 95 BSc axr oo amr Um m O GO O G now tuv Teo AEST e 6 A gt do ommo oN e MEN EE QFE of gt im aH o 5 o Slt 28 8 AX Cens i Hec TH 8 Tr KS E 000 D e
4. Normal 2 Out of the above range Abnormal Thermistor Check Procedure Thermistor resistance value will vary with the change of temperature Take the temperature around the thermistor and then measure thermistor resistance using a tester The relation between resistance and temperature is as shown on the left side Refrigerator compartmen Slide chilled compartmen Ice making tray Thermistor resistance thermistor values against temperature Freezer compartmen 35 Defrosti ua Outside air thermistor 30 In the operation Versa P C board compartmen Troubleshooting with self check 1 If the self check indicates the abnor mality of thermistor when the power is turned on measure the resistance of the thermistor elf there is a short circuit in the thermis tor there may be a defect in the contact of the connector or the element of the thermistor 2 When the self check indicates the abnormality of thermistor a few seconds after the power is turned on check the contact of the connector Ice makin 25 compart men Vegetable compartmen Inner thermistor 20 10 0 10 Temperature Defrost thermistor Evaporator Ice making thermistor Versa compartment thermistor Vegetable compartment thermistor and Freezer compartment thermistor In the fan grille of each compartments Ice making
5. Parts outside inside of refrigerator For 311V system For 12V DC system For 5V DC system Compressor Refrigerator fan motor Freezer compartment thermistor Machine chamber fan motor Refrigerator compartment thermistor For 110V system Motor damper Defrost thermistor Defrost heater Ice maker gear box Slide chilled compartment thermistor Vegetable compartment heater Two way valve Door switch For refrigerator com 1 amp 2 Photosynthesis LED partment amp ice compartment amp Rotational heater board UV LED freezer compartment Divider heater 1 5 Blue LED elce tray thermistor Water pipe heater LED for bacteria removal from elce making compartment thermistor Refrigerator compartment room light water tank Vegetable compartment thermistor Ice making tray heater Position specifying switch in ice Tank heater maker gear box Duct heater Versa compartment thermistor 6 4 AUTO ICE MAKER MR G50M C 1 Ice making cycle Ice stock Water supply Ice tray thermistor watches A and controls the ice making The ice tray is filled with water operation from the water tank Ice ejection lt After the detection lever checks Ice stock the amount ol ice the ice tray e Ice is stocked in the ice server is rolled over for ice ejection Ice making capacity is about 100 120 cubes a day Stock capacity of Ice cubes is
6. No 7 Versa compartment Ice making compartment making test Check that the baffles open and close Disconnect CN9D and meas Is 6 pin connector which is in connector cover Wait 1 minute for self ure the resistance between on the back of versa compartment connected check and and between and properly See Self check and Check that the winding of motor 6 pin connector is connected to motor damper error display method and damper for ice making compart o Ice making ment versa compartment has a Refer to the figure below test operation on page resistance of approx 4150 Yes 14 Replace the motor damper for ice making com Normal partment versa compartment Replace the fan grille as well as the motor damper because they are combined together Normal Y Is the motor damper covered with frost gt Repair the frosted part Not frosted Y Check the versa compartment thermistor Dip the versa compartment thermistor into the ice water 0C and disconnect 6 pin connector for fan grille at the Defective thermistor Replace the versa back of versa compartment Measure the resistance compartment thermistor between terminal white and white Resistance at 0 Approx 6 7kQ Check the ice making compartment thermistor Dip the ice making compartment thermistor into the ice Defective thermistor
7. 21 Inverter related indication Compressor does not operate Abnormality Possible cause Symptom Treatment continuity r Trouble of the rDefective wiring control board Defective con nection of con nectors related to com pressor board side relay comp side Defective wiring continuity of the compressor Trouble of control board Trouble of com pressor 1 or 2 1 Compressor cannot be activeted for more than 1 5 hours 2 Overcurrent detec tion error occurred before the compressor is actived Compressor 6 pin relay connector in machine chamber Point 2 to measure resistance For checking the connection to compressor to compressor 2 Control board Point 1 to measure resistance For checking the relay connection Lead wires connected 1 Locate the trouble and decide the treatment Decide the treatment by checking the followings 1 Defective connector connections board side relay comp side 2 Resistance of compressor s winding 2 Flowchart of troubleshooting Check Treatment 9 Connect properly Connector CN50G on the control board is properly connected Y Yes 6 pin relay connector in machine chamber is properly connected Y Yes The connector of compressor is properly connected Yes Disconnect 6
8. 4 Poor defrosting Short circuit the terminal T and 2 of the compulsory defrosting terminals CN1M of the filter board to actuate the compulsory defrosting function and check whether the defrost heater is working properly 1 No Yes heats up Y Check if there is continuity between thermal fuse No and defrost heater Yes 4 pin connector DU 9 t pin connec ert 3 E Thermal fuse Control board 1 pin connector ma Defrost heater Defrost thermistor lt 2 pin connector gt space between gaskets the amount Check the following half open door of ice Replace the defrost heater and the thermal fuse Check the resistance of the defrost thermistor Control board Short circuit CN1M Compulsory defrosting 1 The compulsory defrosting will not work when the temperature of the defrost thermistor is 14 or more x lt o z Een c wn 9 E c 5 i g S B E i refrigerator fan motor Is the lamp indicating abnormality Plug and unplug the power cord to perform self check on gt Replace refrigerator fan motor Note Refrigerator fan motor is combined with fan grille Plug and unplug the power cord to c
9. Trouble of power supply voltage 6 When bus bar voltage full wave voltage is DC 390V or above in power input 1 Different voltage of power supply outlet 2 Trouble of relay in the circuit on the control board Replace the con trol board Refrigerator compartment room light OFF Heaters OFF Trouble of control board EEPROM 6 related trouble EEPROM IC11M accumulates data necessary for control When the data are not input accurately When microcomputer cannot read the data Replace the con trol board When abnormality occurs in power input the compressor is Suspended for 10 minutes When abnormality occurs in normal operation the com pressor keeps operating Defective wiring continuity or trouble of control board The errors 52 to 53 keep occurring over one and a half hour the situation which com pressor cannot be operated continues Overcurrent detection error occurred before the compressor is activated Refer to Compressor does not operate at page 22 The setting of ice making compartment will be displayed and blinks during or after ice making test operation This operation is called the recovery operation If the damper has not operated ever once during the compressor operation make the damper operate when the compressor stops 3 When the resistance is Q the circuit is deemed open circuitted When the resistance is 00
10. ICE GEAR BOX Ice ICE TRAY compartment THERMISTOR esien jueuryeduioo eo Vegetable Compartment DEF THERMISTOR US White 100p jueujreduioo Ung ud ang 199 6 MOIRA FAN MOTOR FM White White I I White ts Violet Violet H Violet 1 Violet Violet 3 Violet n Melowgeen 4 MID E VEETEE Yellow greef Yellow green 1 Yellow VAGETABLE MT ARTMENT LED BOARD 1 2 e ELM COMPARTMENT 1 sem gir ens oi COMPARTMENT g g 8 P I E he TO mea T eS Ze Eee ee eto EE ee ae l S 1 Freezer F THERMISTOR 118 Compartment DEFROST THERMAL FUSE 73 T SE ce ey is bu ley pe eg es Ru 4 l 1 I THERMISTOR Ice making compartment thermistor V THERMISTOR Vegetable compartment thermistor S THERMISTOR Versa compartment thermistor DEF THERMISTOR Defrost thermistor ICE TRAY THERMISTOR Ice making tray thermistor F THERMISTOR Freezer compartment thermistor C THERMISTOR Slide chilled compartment thermistor R THERMISTOR Refrigerator compartment thermistor When the doors are closed 6 N F BOARD emen SSRI 31 E PEE E W gt Iv oe TA TOK poea l l l l l l
11. Release of self check display mode Self check finishes automatically Error cord display is automatically released 10 minutes later 1 When trouble is 52 55 and displayed 2 When error is not found nothing is displayed 14 ound all trouble except For one hour after setting or until mode is released Self check is not available during child lock cooking timer changing the rotati onal speed of compressor checking the temperature of thermistor damper ope ration and demonstration modes 2 Timing in self check Trouble of Defrost heater Self check is conducted after defrosting Make sure to confirm the display before unplugging the power cord because it is automatically reset once the power cord is pulled out Press the Z switch on the panel for 5 seconds Ice making test mode The setting of ice making compartment blinks on LCD during the test operation Open the door and then closed it When abnormality is found in fan motor buzzer sound is heard every time the door is closed Trouble of Inverter Check the error when compressor starts up or is operating Trouble of Thermistor Self check is continuously working 3 Error display and trouble locating Trouble of Ice maker Trouble of Fan motor Display 1 Display details After conducting the self check by referring to 6 2 1 error codes displayed in the tem gt perature display section
12. fan 2 Condenser Compressor cover 1 Remove 7 screws for compressor cover at the back of the refrigerator See photo 25 Drain pan 2 Remove screw 3 screws See photo 26 Caution on assembly D Secure the screws in the following order Right screw Left screw 3 Center screw See photo 26 Caution Wash the drain pan with water in case it is dirty Machine chamber fan 3 Disconnect connector 4 Remove screw 1 screw securing bell mouth and disconnect connector Pull out bell mouth Condenser 5 Remove screw 2 screws and remove condenser See photo 27 Caution Arrange wiring as shown in photo 28 and photo 29 Photo 28 Photo 29 Photo 22 Photo 23 PE tube Tog grille Photo 24 Catches Back of tog grille Photo 25 serews Screws Screw Compressor cover Screw Screw Photo 26 Screw Screw DScrew Drain pan Machine Photo 27 41 OPERATING PROCEDURE Figure 8 te s Attach U washer as the figure shown below Piping connection of two way valve Exit 0 82 o _ 5 Bee o 5S dim e 0 o o2 2 9 This mark shows welded point ge 28 o eo 88 i5 a e is ES Bell mouth d Two way valve W Capillary tube Dryer EFI100E Charge pipe Low pressor side Charge pipe High pressor side Compressor Machin
13. to compressor 0 Defrost thermistor tem perature at power input T1 Defrost thermistor temperature when 15 minutes have passed from the power input When the difference between TO and T1 is TOST1 5 Check the compressor and the pipe When cooling operation returns to normal condition the display of error code disappears Trouble of elec tromagnetic two way valve When defrost thermistor reads 10 or above in five minutes after the compressor s startup 5 Connector CN9D on control board 5 pin connector in machine chamber Repair the contact failure Check the operation of electro magnetic two way valve and then open the valve Trouble of inverter circuit q 6 When there is any trouble in the circuit which detects cur rent of compressor Trouble of bus bar voltage 6 When the range of bus bar volt age is not approx DC 260 390V Trouble of inverter software reset function When the inverter driving software malfunctions Trouble of startup synchronization or overcurrent detec tion 6 When there is no current at compressor startup When phase current exceeds 5 5A at compressor startup When phase current exceeds 3 3A during compressor operation When current of 5 3A or more runs into the bus bar of con trol board Refer to Compressor does not operate at page 21 The compressor is suspended and reactivated 10 minutes later
14. tray thermistor In the ice making compartment Outside air thermistor In the operation P C board NSCEOOODA1 Normal Abnormal 54 56Q Gray common A A B B each phase Open Q or short circuit 00 5 A ko B A Check the operation of two way valve Check the operation by following either 1 or 2 below When a popping sound is heard 1 to 25 times it is considered that the valve is operating normally The sound is clearly heard around the back of the product 1 Reset the power supply Check the operation right after this 2 Ice making test Check the operation right after the test is over In the machine chamber at the rear side of the frame Components Part Name Check Method and Criterion Parts Mounted Position LED for bacteria removal from water tank 12V DC Timing in making contact After 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 condition 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 On the external surface of the tank holder Vegetable com partment pho tosynthesi
15. tray heater Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty 1 2kQ Approx Open circuit During CRYSTAL ICE mode The heater is turned on 5 minutes after water is supplied until 4 hours Operation method Lower part of ice tray Duct heater Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty 3 9kQ Approx Open circuit 9 Synchronised to defrost heater operation The heater is turned on during defrost operation The heater is energized while defrosting Operation method 29 In the fan grille for freezer com partment Components Part Name Check Method and Criterion Parts Mounted Position Tank heater Measure the resistance with a tester Ambient temperature Room temperature Normal 3 9kQ Approx Abnormal faulty Open circuit Operation method The heater is controlled by duty factor increase decrease Under the water tank holder Thermistor o 2 gt S s 0 o a Measure the resistance with a tester according to the following graph Thermistor resistance values against temperature Resistance measured under the ambient temperature from 50 C to 50 C 1 2000 to 500kQ
16. 25C for 16 seconds at the longest Close 61 8C or less Measure the resistance with a tester Ambient temperature Room temperature Contact point Normal Abnormal faulty Less than 10 Open circuit 00 In the machine chamber at the rear side of the frame Refrigerator fan motor Model UDQM002B3 DC brushless Number of pole 10 Diameter 150 Mixed flow fan Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty Between D and 2 GND and IC Power About 12kQ Between Q and open circuit Q Between 3 and 2 Power and IC Power Q Between 3 and short circuit 0Q 990 Pin No In the fan grille of the freezer compartment Machine chamber fan motor Model UDQM004B3 DC brushless Number of pole 10 Diameter 140 Extra fan Operation method During compressor operation Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty IC Power Between 1 and GND and IC Power About 9kQ Between and 4 open circuit Q Between 3 and Power and IC Power Q Between 3 and short circuit 00 In the m
17. 7 stopper Photo 4 Metal stopper 34 OPERATING PROCEDURE PHOTOS 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 photo 5 6 The catches in front 4 places will detach Pull the AUTO shelf toward you to remove Photo 5 Photo 6 AUTO shelf frame AUTO shelf AUTO shelf AUTO shelf frame 3 Parts inside the refrigerator compartment Vertical partition 2 Right rail of the slide compartment Left rail of the slide compartment gt Room light cover gt Control panel Upper Lower Duct R Upper Lower 1 Remove the slide chilled case AUTO shelf and two way flex ishelf from the refrigerator compartment Vertical partition CD Remove the small item case and the slide chilled case Pull out the ceiling by unhooking the front catches on both sides Remove the slide chilled case lid Remove the vertical partition Small item case with free egg shelf S Ceiling of slide J chilled compartment Slide chilled case lid Slide chilled case Vertical partition Right rail of the slide compartment 2 Slide the right rail out toward you See photo 7 Left rail of the slide compartment 3 Slide the left rail out toward you See photo 8 Room light cover Push up the lower catch and pull the room light cover toward you 2 Detach two upper catches to take out
18. 8 h BLUE 5 J 1 eM EE um Sag MN E Jega 9 gt lt oWo 9L ol P 77 Gro gt si ell 3 e jos s tre 2 our E P rex vL EE T 53 Ea E s Ie i w E nin oO ANNO mow VO a 007 a Ko CAUTION Q lt N Z c E 3 855 lt 5859 002 BO CN7S CN8K 1 2 Vegetable compartment LED 3 Door switch input 4 Freezer compartment thermistor 5 Ice making compartment thermistor 6 Vegetable compartment thermistor 7 Versa compartment thermistor 8 Slide chilled compartment thermistor 9 Defrost thermistor 10 Ice making tray thermistor 11 Refrigerator compartment thermistor 12 13 4 5V 1 Reception of operation panel data 3 4 GND 5 ce maker position switch 6 Water pump 7 Ice maker reverse 8 Ice maker rotation 1 2 GND 3 GND 4 Machine chamber fan motor 5 Refrigerator fan motor FG signal 8 Fan motor 9 Damper for refrigerator 2 Power supply to operation panel data 6 Machine chamber fan motor Refrigerator fan motor driver IC power source 7 Machine chamber fan motor FG signal 11 compartment slide compartment Damper for freezer 32 compartment compartm
19. COMPRESSOR BLACK uA WHEN THE DOORS ARE CLOSED I THERMISTOR Ice making compartment thermistor V THERMISTOR Vegetable compartment thermistor VERSA THERMISTOR Versa compartment thermistor DEF THERMISTOR Defrost thermistor ICE TRAY THERMISTOR Ice making tray thermistor F THERMISTOR Freezer compartment thermistor C THERMISTOR Slide chilled compartment thermistor R THERMISTOR Refrigerator compartment thermistor MR G50M C ACTUAL WIRING DIAGRAM Yog NOWWHSdO Son 5985 SSR4SSR3SSR2 lo lez 615141312111 e 987 110987654321 WBN Em EJE 0 s 1915 Eu 4 E 5 STET 0915 THOTT Refrigerator Compartment Yellow 18 White y blue REFRIGERATOR renee m COMPARTMENT Neraca ROOM LIGHT nis R THERMISTOR I LR I I Compartment 1 DA En scd iari sem Light brown White Red Red lue Sky blue Joop 1ueureduuoo Joje1eDujeg Blue Blue ight green Light green blue Whi Tght brown White 250210 fe ang fen m ML Lat eng VIS xu TANK ER PUMP HEATER Zu WATER PIPE HEATER HOLIMS 4000 1 INANLYYdNO9 4 1 4 2342 Mosq iy woe bug rsa Compartment
20. Clogging Clean the water pipe 2 3 partment and freezer compartment for dirt and for Freezing For freezing check Defrost 5 uo eign objects installation and measure Check continuity of o 5 3 the resistance of water pipe water pipe heater and ZS o heater and tank heater tank heater s 0 5 Check the condition of ice tray Broken or cracked Replace the tray Not placed properly gt Reinstall it properly P 2 6 Disassemble the water pump and check the inside Dirt or foreign objects Repair and explain of the pipe to the user for proper 5 5 o 7 Tank pipe is clogged has a hole or is not Clogging disconnecting gt Clean Reinstall it prop t e properly installed Hole or crack erly z 5 Change the tank pipe 5 2 5 8 Check the motor coil resistance Open or short circuit Check the water pump 9 9 Check if there are any dirt or foreign object which Crack or deformation Change the water tank 3 9 are difficult to remove in the water tank Also check if there is any crack or deformation on the tank 10 Check the water pipe for dirt and foreign objects Clogging disconnecting Clean Reinstall it prop Water in the tank Also check the water pipe position and connec Hole or crack erly h wA Metan tion Replace the pipe aes 11 Check the water pipe between F compartment and Clogging Clean Remove the R compartment for clogging dirt 12 Check the water pump operation b
21. Not displayed Release With the door of ice making compartment left open simultaneously press sound is heard The screen returns to the temperature display The function is automatically released one hour later Follow the procedure above to release this function For the protection of the compressor avoid releasing it by plugging and unplugging the power cord RT qu O and O for about 3 seconds until a beep 11 7 Damper Operation Mode During damper operation mode the damper is forcibly opened and closed and the state of damper is shown on the panel D Setting With the ice making compartment door left open simultaneously es d and for about 3 seconds until sound is heard and 22 blinks Em BE With the door left open simultaneously press and O for about 3 seconds until a beep sound is heard Status display of each damper Each compartment display turns on when each damper is open and turns off when each damper is closed Ex When all dampers are open Refrigerator compartment Ice making compartment Slide chilled compartment Versa compartment Freezer compartment u x HT EDEA 9 How to make each damper open or close Although the state is shown on the panel check airflow and confirm the damper is really opened or closed However air does not come out when the door is closed so put a magnet on the door switch to simulate the condit
22. and disconnect the connector to remove the DEF thermistor and the thermal fuse See photo 17 Caution on assembly Attach defrost heater in place and loosen the lead wires in order to prevent water from entering the glass tube Attach the drip tray securely to the lower parts Attach the DEF thermistor in place If they are attached out of place thermal characteristics will go wrong Attach the lead wires to the fixture entering pipe 1 Brazed section the upper side J Brazed section on the lower side Entering side BE Entering pipe dis i of evaporator i End i Black tube 1 Gray tube Black marking No markingon on the unit the unit exit pipe EVAP piping installation Photo 15 Photo 16 Figure 1 D Figure 2 Cover upper rere Connector cover left Rivet Cover lower Connector cover right Screws Rivet Fan grille Fan grille consists of the following motor dampers for ice making compartment refriger ator compartment versa compartment refrig erator fan motor fan thermal fuse vegetable compartment heater 1 4 thermistors rip tray Defrost heater 37 OPERATING PROCEDURE FIGURE Spacer left spacer right Spacer installation diagram Evaporator N Spacer right Spacer left Left side of evaporator Left side of evapo
23. and two digit error code flashes alternately as shown in the right figure When several errors occur they are displayed alternately However the error whose code has a smaller number has priority to be displayed first In case the errors of ice tray thermistor amp refrigerator thermistor 3 and refrigera tor fan motor 3 are happening simultaneously Y IU 0 10 For 2 minutes in self check a high tone sound is heard due to the operation check of damper 2 Check point and treatment Detecting method C3 13 Error code Trouble Check point Treatment lt tt DN Ex When ice maker gear box is defec tive Control Testing 1 Ice maker is under testing 5 6 Communication error of operation panel When the following commu 1 Connector CN8K CN7S CN4D on A ud eror oeur dana trol board control board an 4 pin relay connector hinge operation P C board i They transmit and receive 4 pin connector on operation P C board data that has nothing to do with settings They cannot transmit and receive data each other for about 2 seconds Repair the contact failure Trouble of control board and operation P C board Replace Keep the same operation as the one before the communi cation error has occurred Communication error of inverter When abnormality is found in the communication betw
24. assembly Be sure that all the parts are fitted securely in place 5 Parts inside the ice making compartment versa compart Photo 12 ment vegetable compartment and freezer compartment gt Partition I S gt Partition I S V gt Cover IM gt Automatic ice maker assembly Cover lower gt Partition V F gt Connector cover right left gt Fan grille gt Defrost heater Drip tray DEF thermistor 1 Remove interior parts out of ice making compartment versa compartment vegetable compartment and freezer compart ment 2 To detach them pull out the doors of ice making compartment versa compartment vegetable compartment and freezer com partment Partition I S 3 Remove rivet 1 rivet partition cover and a connector Remove screw 2 screws at the front side of refrigerator and four rollers to pull out the partition See photo 12 Caution on assembly Push up the lead wires so that they will not rub partition S Partition I S V 4 Remove screw 2 screws at the front of refrigerator Remove screw 1 screw each and screw 1 screw each at the right and left side of inner wall Then lift up the partition See photo 13 Cover IM 5 Catches in order to detach the cover See photo 14 Automatic ice maker assembly 6 Pressing a catch upward and pull Automatic ice maker assem bly to the right side See photo 14 Photo 13 Tank holder g EN E gt x Parti
25. chilled case Small item case Slide chilled case Free egg shelf S j Tube stand I Bottie 9 Bottle pocket S UT pocket L r C Alumi num tray Versa case Water tank Versa compartment gt Automatic ice maker Mer is applicable to freezer soft freezing Ice making compartment ehillechand refrigerator Versa compartment is set to soft freezing B Ice making compartment is mode at factory shipping applicable to refrigerator and Water tank app 1 2L freezer compartment Water supply port cap Water tank lid V LED lamp Pipe Water supply pump yf Light type bacteria Ice tray removing filter IL removed Water supply pipe Two layer Ice storage bin soundproof mat Ice server The soundproof mat consists of two layers Freezer compartment installithe matin the C Vegetable compartment gt p order shown Slide case Vegetable case sound of ice dropping into Freezing case Vegetable stand 33 the storage bin upper Do not discard Freezing case lower 8 DISASSEMBLY INSTRUCTIONS MR G50M C Plug out before work Check the
26. dcs e tr Pal Space efficient storing allows two dozen 350 ml cans to be stored additionally 1 mc Before There was unused space when big items were stored Conventional models X Jill n Pummummumuuuumuuumumuuumuumumuuusuuuumum Refrigeration compartment with large 239 L capacity 1 Comparison of 2006 MITSUBISHI refrigerator MR G40J and 2007 new model MR G45M 2 Vegetable compartment 90 high humidity storage Direct air to vegetables is avoided The vegetable case is cooled from the surface of three walls and pleasant humidity is maintained by the humidity sensor mounted just for the vegetable compartment About 3 times more Reducing sugar extends shelf life of vegetables Tricolor LEDs Blue wa Increases vitality of veg etables together with the orange LED water reten tion 2 Comparison of weight changes Spinach stored for 2 5 days UV Stimulates vegetables and increases polyphenol Orange Forms reducing sug ars which become the Source of vital energy of vegetables Y eem 2001 model MR S45A New vegetable compartment 2 Number of days it took for the weight of spinach to decrease by 10 percent Compared between 2001 model MR S45A about 2 5 days and 2007 new model MR G45M about 7 5 days With vegetables fully loaded 8 Moisture evaporated from vegetables are retained in the compartment maintaining high humidity Plast
27. i l l l MACHINE CHAMBER I FAN MOTOR i l l l i l l l l l l j l 21 TWO WAY VALVE MO PROTECTOR COMPRESSOR CHAMBER COMPARTMENT VIEW REAR F1 NT Power Plug AC110V 60Hz 4 OUTLINES AND DIMENSIONS MR G50M C 685 Display 680 Cabinet Unit mm 709 Display 6 283 5 394 5 E E N si a amp o E 5 i 6 283 5 394 5 5 8 8 N Y V 578 Pitch between the rear wheels T 580 kaz een the adjust bolts 639 37 966 Pitc between the front wheels rJ J 1 595 2500 Y 595 o E 195 595 J 8 E Y 30 1 REQUI
28. of compressor and Error code display D Setting RT Press Z for about 5 seconds O Operation and its display While automatic ice making is testing the indication of ice making compartment setting blinks on LCD When something is faulty the error code is indicated Release The test automatically finishes in 10 minutes and the error code changes to temperature display 5 Thermistor temperature check mode D Setting With the door of ice making compartment left open simultaneously press and for about 3 seconds until a beep sound is heard and 8 8 blinks Press with the door left open 10 Display After the setting is complete the kinds of thermistor and its temperature are alternately shown on the panel In case of abnormality the display returns to current temperature Please note that the temperature detected by thermistor may be a little different from the real one due to the influence of refrigerator temperature Kind of Defrosti Refrigerator Slide chilled Ice making Versa Ice making Vegetable Freezer Outside ai thermistor elrosting compartment compartment compartment compartment tray compartment compartment MISSE a me a a ri 01 I K L Display A 0 b I a lI Y a bI d R 5 1 F O Change of display While thermistor temperature check mode is set press m EE SR B ES S A sh
29. there is no dysfunction Make sure all connectors are connected properly and there are no loose connections When there is problem Refer to above Setting and activate error history display mode again with ihe ice maker gear box Open the ice making compartment door and press for 3 seconds to reset error history When error history is reset is displayed Release a Open the door of the ice making compartment and press and Q together for 3 seconds until a beep is heard The display will return to the normal temperature display Function is automatically released in an hour Follow the procedure above to release this function For the protection of the compressor avoid releasing it by plugging and unplugging the power cord Door Buzzer System Door buzzer has been installed so that one will not forget to close the door The buzzer rings in the following conditions 1 When door is left open 2 When refrigerator fan motor or machine chamber fan motor is abnormal 3 When there is possibility that the door of freezer compartment is not closed securely Buzzer 1 When door is left open Every 1 minute for 4 minutes 4 times After 5 minutes Beep beep continuously 2 Refrigerator fan motor or machine chamber fan motor is abnormal 2 times 3 When there is possibility that the door of freezer compartment is not closed securel
30. 00 5 Put the parts back in the reverse order of disas Light type bacteria removing filter sembly 1 Pull out water supply pipe Wipe the tank holder with clean cloth Do not let water flow into the tank holder 5 Troubleshooting for automatic ice maker Water 2 Separate pieces and wash with water 3 Reverse steps to replace the pipe supply lt lt Water pi PP Y lt a gt Twist the Side A ater pipe pipe oS lt gt aluimin m Replace the water lt pre i Se o 07 pipe Tank holder Be sure that sides A packing Aluminum pipe replace it and B fit flush to each other Side B The ice maker gear box may be defective cooling may be poor or ice cubes may be full in the server g 1 Check inside of the ice server elce cubes are not stored flatly Inspection o and the amount is detected 5 52 as full o Food inside the ice server g D 2 Measure the resistance of ice tray thermistor circuit Open circuit Q or Replace the ice tray 5 short circuit 0Q thermistor a 3 Check if the temperature of the freezer compart Not enough Poor cooling 250 2 gt mentis cool enough z Eg It takes longer to make ice during summer time 5 in or if the door is frequently opened The water saucer may be defective or the ice tray may get cracked 4 Check the water pipe between the refrigerator com
31. 2 L _ j only applies to versa compartment Excessive cooling No cooling poor cooling Which operation mode is Which operation mode is versa compartment set to J versa compartment set to It is set to Vegetable Iti Soft f ing Refrigerator or ESO Sort reezing Chilled It is set to Freezer It is set to Vegetable Is the Is the temperature No Set the temperature to High Refrigerator or temperature No Set the temper set to High P 9 Chilled set to Low ature to Low It is set to Soft freezing Check the set temperature in freezer com partment Is the temperature set to High x1 Does cool air come out gt Set the temperature to of air outlet when open High ing the refrigerator compartment door and Refer to the section Only the food around cool air outlet is exces Yes Keep food away from sively cooled air outlet in storing food attaching a magnet bar No T on the door switch The refrigerator fan motor does not work Yes Make the operation of The baffles motor damper for ice not function Is connector CN9D on Connect the connector making compartment g control board connected properly refrigerator compartment properly visible and conduct ice Yes
32. BROWN z e RED x PINK z GRAY 1 co BLACK 58 SKY BLUE Gz x WHITE Se O BLUE a o Oz o VIOLET BLACK ORANGE TWO WAY VALVE LEV CONTROL BOARD N F BOARD SKY BLUE LIGHT BROWN C SKYBLUE oc lt RED O B 2 DOOR SW FOR F COMPARTMENT YELLOW GREEN e WHITE G ES VIOLET WATER PUMP LED BOARD IN VEGETABLE ROOM WHITE See VIOLET ASSY HOLSIS3H VIOLET I EH Aa c NE LED x LIGHT GREEN BLACK RED e BLACK Anoo o YELLOW VIOLET BRIGHT YELLOW FAN MOTOR ORANGE BLACK amp VIOLET LIGHT GREEN FAN MOTOR FOR COMPRESSOR DEFROST THERMAL HEATER FUSE 73 C RED WHITE PINK GRAY DUCT HEATER GRAY GRAY GRAY DIVIDER2 HEATER R DOORS GRAY GRAY oe WHITE WHITE DIVIDER1 HEATER ICE ROOM VERSA ROOM WHITE GRAY ELTON COMPENSATIONAL HEATER 1 FOR VEGETABLE ROOM GREEN RED ON THE BACK OF VEGETABLE ROOM COMPENSATIONAL HEATER 2 FOR VEGETABLE ROOM BLUE ON THE FLOOR OF VEGETABLE ROOM WHITE GRAY M WATER PIPE HEATER GRAY GRAY ORANGE GRAY WATER TANIGHEATER GRAY GRAY YELLOW SKY BLUE IGESERAY HEATER SKY BLUE GRAY R COMPARTMENT ROOM LIGHT YELLOW O ORANGE GRAY GRAY MOTOR PROTECTOR _ Fa VIOLET YELLOW o VIOLET BED ys WHILE
33. Changes for the Better MITSUBISHI ELECTRIC HOME REFRIGERATOR No OAH094 SERVICE MANUAL MR G50M T C MR G50M W C Model name indication Inside this door CONTENTS SPECIFICATIONS e e eee e e eee ee eee eee 3 WIRING DIAGRAM OUTLINES AND DIMENSIONS 7 REFRIGERANT CIRCUIT ELROUBIESEIIOGTING eee 6 1 FUNCTION OF OPERATION PANEL lt 09 6 2 FLOWCHART OF SELF CHECK lt lt lt 14 6 3 BLOCK DIAGRAM OF PRINTED CIRCUIT 17 6 4 AUTO ICE MAKER lt lt lt 17 6 5 FLOWCHART OF TROUBLE CRITERION lt lt 19 SSS 6 6 TROUBLE CRITERION OF MAIN PART S00 26 6 7 TEST POINT DIAGRAM OF FILTER BOARD lt lt lt 31 6 8 TEST POINT DIAGRAM OF CONTROL BOARD 32 7 NAMES OF THE PARTS lt lt lt 33 C Taiwan 8 DISASSEMBLY INSTRUCTIONS lt lt 34 PARTS CATAROG 94 Kostet N NOTE RoHS compliant products have lt G gt mark on the spec name plate 1 FEATURES 50 1 AUTO shelf The shelves can be adjusted freely even with food items placed on them ht BU VD DRE else
34. D00000 and te o0 00 00 O een connector Refrigerator compartment 8 pin a Fio i Poara right and left Ice making connector p compartment door switch Lo 3 Oe oo O 1 2 connect DO DO 6 pin connector 4 pin connector D DIE DIE 2 DIG O Freezer compartment door switch OO Refrigerator fan motor Continuity detected gt Replace refrigerator fan motor Note Refrigerator fan motor is combined with fan grille f those doors are open the switch between rminals of 2 pin connector will be OFF Excessive cooling poor cooling 6 Vegetable compartment Is the temperature of vegetable compartment set to Low Set the temperature to Low zx Is the temperature of vegetable compartment set to High Yes Goto Qor Yes Y Check the thermistor vegetable compartment heat er and control board lt No Is 1 of these error codes indicated when conducting Are the temperatures of refrigerator compart Goto Dor ment freezer compart ment set to Low Yes zx Set the temperature to High Set the temperatures to Middle or High self check of ope
35. Freezer Refrigerator Versa Slide chilled Ice making Vegetable Compressor Motor damper Heater Dial position ON OFF SHUT SHUT OPEN SHUT OPEN SHUT ON OFF HI 20 3 24 1 0 6 1 8 2 3 3 5 MID 17 6 21 4 1 6 0 4 3 2 4 5 LOW 14 9 18 7 4 8 3 5 4 2 5 4 REFRIGERATOR 4 4 2 4 1 2 CHILLED 1 8 LOW Soft freezing 2 3 4 0 Temperature control MID Soft freezing 4 0 5 9 HI Soft freezing FREEZER ICE MAKING ICE MAKING STOP GiGiGiGiGiGiGiGiGiG OO CRYSTAL ICE MAKING WIRING DIAGRAM 3 MR G50M C SKELETON WIRING DIAGRAM WH LTHERMISTOR wH TE e BROWN WH TE AWN TE V THERMISTOR wH TE YELLOW WH VERSA THERMISTOR TE e BRIGHT YELLOW WH TE AMS WH DEF THERMISTOR PINK 10 FUSE WH r LIGHT CE TRAY THERMISTOR TE AWS WHITE GREEN e WH F THERMISTOR BLUE WH TE ANN WH TE F1 SC THERMISTOR YELLOW TE AWS WH TE GREEN R THERMISTOR WHITE AMS WHITE ORANGE SKY BLUE m a RED 5 cs MELLOW _ WHITE RED 5 WHITE o BLUE m RED YELLOW e WHITE RED 5 WHITE e 9 BLUE BROWN m a RED a WELLOW e LIGHT BROWN 5 WHITE YELLOW GREEN e o BLUE
36. RED SPACE FOR INSTALLATION 547 8 d 541 S ees He 29 541 539 ad E DE 2 1 72 654 R L Refrigerator compartment Left DOOR DIMENSION R R Refrigerator compartment Right L R R R S V F making compartment Hight 812 812 214 214 361 361 S Select compartment Versa compartment Width 283 5 349 5 283 5 394 5 684 684 V Vegetable compartment F Freezer compartment 5 REFRIGERANT CIRCUIT MR G50M C 2 Evaporator N 2 i ll Capillary tub tube 1 8 0 82 2700 6 TROUBLESHOOTING 6 1 FUNCTION OF OPERATION PANEL MR G50M C 1 Function of normal operation Oon HESPE 1 EEJ I PSE cis FL P EKME SHH UL MODE switch SELECTION switch IThe switch functions to select the required maa AK EER lt IThe switch functions to set the operation mode or temperature A2 k AbvZ QUICK MODE switch IEach compartment can be cooled rapidly Quick mode is finished ECO MODE switch IEach compartment can be operated with energy saved compartment of compa
37. Replace the ice making water 0 C and disconnect 6 pin connector of fan grille at compartment thermistor the back of ice making compartment Measure the resist ance between terminal white and white Resistance at 0 C Approx 6 7kQ 6 pin connector 6 pin connector D Motor damper for refrigerator compartment making compartment 0 Ice making 3 4 Refrigerator A compartment compartment attach a thermistor magnet bar ere Versa 6 pin connector compartment thermistor Nu CN4D OOS POVE e Eee Motor damper versa compartment OS Ge 6 6 TROUBLE CRITERION OF MAIN PARTS MR G50M C Components Part Name Check Method and Criterion Parts Mounted Position Compressor Measure the resistance with a tester Model EFI100E13DAH Rated input 45 159 1620 4800rpm Starting current 2 0 Running current 0 63 2 19 1620 4800rpm Normal Abnormal faulty Winding Black White White Red Red Black short circuit 00 Open Q or In the machine chamber at the rear side of the frame Motor protector Model MM3 71CCV Connected point Open 100 50 C or more Energize it at 17 0A
38. achine chamber at the rear side of the frame Components Part Name Check Method and Criterion Parts Mounted Position Water pump motor Measure the resistance with a tester Ambient temperature Room temperature rax u Normal Abnormal faulty a Open Q 9 160 Approx short circuit 0Q Under the water tank holder in refrigerator com partment Motor damper for refrigerator compartment ice making compartment Measure the winding resistance Normal Abnormal faulty Open Q or Short circuit Approx 09 Winding 415Q Blue White Red Yellow Red Yellow White In the fan grille for freezer compartment Connector is at the left back bot tom of refrigera tor compartment Motor damper for versa com partment Measure the winding resistance Normal Abnormal faulty Winding Cae Sua Red Yellow 415Q Open Q or A short circuit Approx 0Q Red Yellow Blue White In the fan grille for freezer compartment Connector is at the back of versa compartment Motor damper for freezer com partment Measure the winding resistance Normal Abnormal faulty Winding Bue ne Red Yellow 415Q Open Q A short circuit Approx 09 White Red Yellow Blue In the fan grille for freezer comp
39. artment Connector is at the left back bot tom of vegetable compartment Components Part Name Check Method and Criterion Parts Mounted Position Defrost heater Rated input W 150 Operation method The heater is energized while defrosting Defrosting is finished when the evaporator is 14 1 5 C or more Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty 810 Open circuit Q At the drip tray under the evap orator of the freezer compartment Vegetable compartment heater 1 Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty 2kQ Approx Open circuit o Operation method The heater is turned on when vegetable compartment thermistor has reached a lower temperature than the set temperature for vegetable compartment In the fan grille at the back of vegetable compartment Vegetable compartment heater 2 Measure the resistance with a tester Ambient temperature Room temperature O0 Abnormal faulty Open circuit oo Q Operation method The heater is turned on when vegetable compartment thermistor has reached a lower temperature than the set temperature for vegetab
40. artment lights when the door of refrigerator compartment or ice making compart ment is open When room light is lighted continuously for more than 60 minutes it is turned off to prevent heating The protection is released when doors of refrigerator compartment and ice making compartment are closed Then room light is lighted the next time at normal timing 13 6 2 FLOWCHART OF SELF CHECK MR G50M C 1 Troubleshooting with self check This refrigerator has self check feature to clarify and indicate where amp what the trouble is You can perform operation checks and identify malfunction of electric or electronic parts Error history is recorded and can be displayed by the refrigerator Self check D Error history mode Refer to 6 1 8 Operate the ice making test During the ice making Problem may recover automatically Current displayed error Refer to test mode watch the Perform the following if error is not displayed in the table below operation ice maker before treatment or the error which was displayed The display of ice making compart gear box and water at the time power of the unit was turned on is not displayed ment setting will blink during the test pump in refrigerator v Is error displayed No Set the error display mode Yes h 2 Y Locate the trouble according to LED No Release error displ
41. automatic ice maker pressing ice making stop switch In assembling amp parts seven kinds screws rivets are used Do not mistake to use them 4X16 White With plastic washer 4X12 4X12 Black Stainless steel With metal washer Rivet ow 9G ee Specified screw Rivet OPERATING PROCEDURE PHOTOS 1 Elect cover gt Control board Photo 1 1 Remove 5 screws fixing the elect cover and the rivet on the Rivet upper rear side of the refrigerator See photo 1 Control board 2 Disconnect the connector to remove the control board Caution on assembly Firmly connect the lead wires and the connector Ensure the wires are not pinched 5 fixing screws 2 Parts inside the refrigerator compartment AUTO Photo 2 shelf 1 Remove two way flexishelf from the refrigerator compartment AUTO shelf CD Move the lever to the right and slide the AUTO shelf to the uppermost position See photo 2 2 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 3 3 Remove the metal stoppers in front back left and right sides of the unit Caution on assembly RM Photo 3 First install the metal stoppers to the unit Then place the AUTO shelf on top and push the AUTO shelf downward until it clicks into place 4 places Refer to Photo 4 for the direction of the metal stopper installation AUTO shelf
42. ayed indication See page 15 16 Is error displayed mode and the self check is finished 4 Yes Unplug the power cord from outlet Perform self check procedures B through b A Repair replace defective part s Reset the error history according to LCD indication Refer to 6 1 8 Y Wait 10 minutes v Self check before inserting No Release error display Plug the power cord into outlet the cord once 15 error displayed mode and perform the Current displayed error it s unplugged self check again Refer to in the table below ifthe cordis go to plugged in within 10 minutes error may be displayed Ye heads Is error displayed Note1 Self check cannot detect abnormalities in the following parts See page 19 31 for troubleshooting Door switch No Motor damper Heater Water pipe Vegetable compartment heater etc Water pump motor Note2 If any abnormality is found when switch is turned on compressor Y and fan motor are suspended for 10 minutes e Perform error history mode Note3 The alarm beeps when some abnormalities motor locked have Was more than one error occurred at the refrigerator fan motor restarts its normal operation displayed during repair Note4 If any abnormality occurs in compressor s inverter circuit the compressor and the refrigerator fan motor stop for 10 minutes not only when plugging the power cord Was the error which was displaye
43. cutter Be careful not to damage the surrounding patterns When cutting out the pattern jumper cut so that the white hatched area behind the board is cut out After cutting remove the cut out board pieces and install it to the control panel sl QOe og o Carn Front side Pattern jumper Refrigerator compartment Attach a magnet bar Weak Cooling Strong Refrigerator Low Middle High Chilled compartment Slide chilled Refrigerator Chilled compartment E 6 pin connector Refrigerator compartment G thermistor m DEN gt Ww ub CN7S IO OG Be ap O 5 5 Slide chilled compartment O thermistor 19 Poor cooling N Is the set temperature of freezer compartment set to High EOM gt Set the temperature to High Yes y No Does cool air come out of air outlet when opening the refrigerator I Proceed to The refrigerator fan motor does not work compartment door and attaching a magnet bar on the door switch y Yes The baffles Operate the ice making test at the place where the operation of do not func Replace the motor dampe
44. d when power was turned on displayed again Was treatment performed Perform error history mode Self check is finished Self check and error display method and operation Item Operation method RT Display or self check operation 1 Conduct the automatic ice making test Display time For 10 minutes Others Self check is not available lce making test operation All items except 6 listed up on the table at page 16 will be checked x O o N Press the 75 switch for 5 seconds beep is heard The display of ice making compartment setting is blinked 2 When trouble is found all error codes except 55 55 are displayed 3 When error is not found nothing is displayed after setting during child lock cooking timer changing the rotati onal speed of compressor checking the temperature of thermistor damper ope ration and demonstration modes Power input All items except 6 listed up on the table at page 16 will be checked e o o gt ES o 2 e 5 E Plug the power cord into outlet 1 When trouble is 55 55and displayed 2 When error is not found nothing is displayed ound all trouble except For 10 minutes after power is supplied Self check is not available during demonstration mode G Error history Display error Refer to 6 2 3 Error history display mode
45. e turned ON When there is a short or open circuit in the refrig erator compartment ther mistor Trouble of refrig erator thermistor Connector CN7S on control board 6 pin relay connector Check the resistance of thermistor Synchronize the open close status of R damper with that of C damper See page 13 Trouble of chilled compartment ther mistor When there is a short or open circuit in the chilled compartment thermistor Connector CN7S on control board 6 pin relay connector Check the resistance of thermistor Synchronize the open close status of C damper with that of R damper See page 13 When there is a short or open circuit in the versa compartment thermistor Trouble of versa compartment thermistor Connector CN7S on control board 6 pin relay connector Repair the contact Check the resistance of thermistor Replace When S compartment is used as freezer S damper is open when compressor is turned on S damper is closed when compressor is turned off When S compartment is used other than freezer S damper remains open for the first 3 minutes and then closed for the rest of time S compartment Versa select compartment When there is a short or open circuit in the vegeta ble compartment thermis tor Trouble of vegeta ble compartment thermistor Connector CN7S on control board 4 pin relay connector Repair the contact fa
46. e chamber fan motor 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 two way valve or lead wires 42 Door adjustment lt Adjusting refrigerator compartment doors Common elements First check the installation condition CD If the adjustment bolt is not in contact with the floor lower the bolt and adjust it so that the caster is slightly above the floor When the refrigerator is installed in the corner of the room the bolt of the refrigerator may sink into the floor and cause the refrig erator to tilt It is recommended to make adjustments by objects like boards beforehand 3 When the refrigerator bolt is sunk into the floor and it can be confirmed visually prevent sinking by using objects like boards Note The refrigerator weighs about 100kg and is held by four bolts How far each bolt sinks into the floor depends on factors such as floor pillars Change in balance due to position of stored food such as large or small amount of food stored in the door pockets may also affect sinking lt Adjusting ice making compartment and versa compartment doors m Adjusting vertical space between doors Adjusting doors hori
47. e photo 21 2 Remove a screw on the wiring cover and disconnect the con nector in the cover See photo 21 Caution on assembly When raising the rotational heater board replace the rotational heater board as it was 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 heater preventing dewdrop may make rotational heater board hot it does not affect food inside Refer to right figure when installing the rotational heater board See figure 7 e Loosen the fixing screw and adjust a vertical upper and lower motion e After assembling make sure that the rotational heater board fits the guide properly and works properly Photo 21 Screws Figure 7 Left door of j _ refrigerator compartment Rotational heater Guide board 40 OPERATING PROCEDURE PHOTOS 10 Toe grille Detach catch 2 places and remove toe grille Caution on assembly CD Remove PE tube 2 places on right and left side See photo 22 e If PE tube is not removed toe grille cannot be installed Tilt the toe grille to install as shown in photo 23 e Catch 2 places on the back of toe grille should come to the position indicated See photo 24 e Refer to the label on compressor cover photo 23 for caution on assembly 11 Compressor cover gt Drain pan gt Machine chamber
48. een refrig erator control circuit and inverter control circuit in control board When they do not transmit and receive data for 10 seconds Replace the con trol board Compressor OFF When the model of control 1 Check the model name of control board board is different from the one of operation P C board Trouble of model judgement Replace Check the operation P C board Replace Keep operating the unit and conduct error code indication only When there is a short or open circuit in the ice making tray thermistor Trouble of ice making tray ther mistor Connector CN7S on control board Ice gear box 6 pin relay connector 8 pin relay connector Repair the contact failure Check the resistance of thermistor When the compartment door has been closed for 3 hours and when freezer compartment thermistor is 10 C or less ice detecting operation starts When there is a short or open circuit in the freezer compartment thermistor Trouble of freez er compartment thermistor Connector CN7S on control board 6 pin relay connector Check the resistance of thermistor After 10 minutes off the compressor repeats 30 minute ON and 20 minute OFF When there is a short or open circuit in the defrost thermistor Trouble of defrost thermistor Connector CN7S on control board 2 pin relay connector Check the resistance of thermistor The defrost heater won t b
49. ent versa compartment Electromagnetic two way valve CN9D CN3A CN4D qm OO oo Damper for ice making Be oO or 11 12 1 Ice tray heater 3 Water pipe heater 7 Vegetable compartment heater 1 2 9 11 Refrigerator compartment room light LED for bacteria removal from water tank Power supply of two way valve 5 Divider heater 1 5 Rotational heater board Vegetable compartment photosynthesis UV LED Blue LED 7 NAMES OF THE PARTS MR G50M C Operation panel Fast cooling button MODE SELECTION button button ECO button 0 mE E DARE EDS EE g 25 RKE RUNI ce d ees KEEN 3 cane feta 50 RARE 29 5 ERU dua C Refrigerator compartment gt AUTO Shelf 5 Two way U ah Free pocket L flexishelf ET i Free pocket S EN ne E slide LI
50. er detects 110V consider at the right top of fan grille the control board normal 110V is outputted every 10 seconds Ee the vegetable compartment heater 1 Is there a resist ance of approx 1kQ between D and 5 terminals of 2 pin connector which is located at the left back bottom of vegeta ble compartment Note Vegetable compartment heater 1 is combined with fan grille 09 or oQ Replace the vegetable compartment heater 2 Note Vegetable com partment heater 2 is combined with L e 54 Y Yes Y partition V F No Check if doors are hermetically closed gt R eplace the control board Check refrigerator slide chilled compartment is excessively cooled poorly cooled Follow the refrigerator slide chilled compartment flowchart on page 19 OK Slide chilled Explain proper usage to customer 6 pin connector companment thermistor 5 Refrigerator compartment thermistor onnector Q Q onnector W comp heate Operation P C board 5 pin connector Outside air TH1 oco e00 Mi thermistor 24 W Vegetable compartment heater 1 Vegetable artment r
51. esn t rotate even though power is on When the waveform which indicates the rotation times of motor cannot be detected 1 Connector CN4D on control board Refrigerator fan motor 4 pin relay connector 2 Check refrigerator fan motor operation Repair the contact failure Replace 3 minutes later the refrigerator fan motor is reactivated to be checked Until the fan motor gets to oper ate correctly the buzzer sounds every time the door is closed Trouble of machine cham ber fan motor When motor doesn t rotate even though power is on When the waveform which indicates the rota tion times of motor can not be detected 1 Connector CN4D on control board 4 pin connector 4 pin relay connector 2 Check machine chamber fan motor opera tion Repair the contact failure Replace 3 minutes later the machine chamber fan motor is reactivated to be checked Until the fan motor gets to oper ate correctly the buzzer sounds every time the door is closed Trouble of ice maker gear box When the gear box opera tion is not finished in 30 Seconds 1 Connector CN8K CN7S on control board Ice gear box 6 pin relay connector 8 pin relay connector 3 Check the trouble of the ice gear box with the ice making test operation Repair the contact failure Replace 100 minutes later the gear box is reactivated to be checked again Clogging of refrigerant pipe or trouble related
52. ft is based on the data measured at the center of each compartment with the door closed and with no food inside under the condition of ambient temperature 30 C The range varies depending on circumstances 2 Demonstration mode for shop display BEB __ mode is not available when the temperature of freezer compartment is 7 or less even if ron are simultaneously pressed for about 5 seconds and sound is heard Cooling operation starts instead Setting Within 1 minute after power supply is turned on simultaneously press and switch for about 5 seconds with the door of ice making compartment left open When the setting is complete a beep sound is heard and is displayed Panel operation mode during demonstration mode The panel operation mode changes to manual if any of the switches is pressed and it changes to auto if none of the switches is pressed within 3 minutes after demonstration mode is set Manual mode Panel indication changes according to switch operation Auto mode Panel indication is automatically changed eee PP Simultaneously press switch for about 5 seconds with the door of ice making compartment left open When the function is released beep sound is heard FE disappears and the panel indication gets back to normal Note Follow the procedure above to release demonstration mode as it cann
53. h and body to remove the door switch Photo 18 Figure 3 7 Operation panel How to remove 1 Slide the operation panel in the direction of the arrows unit it stops See figure 4 2 Pull out the operation panel as shown in a figure 5 See figure 5 Note Please pull it out carefully because it is still wired to the body 3 Take out the panel by detaching the connector of lead wires from the body See figure 6 Note CD If the horizontal slide is hard to remove with hands put plate on the right edge of the panel please put protective object such as tapes on the area of contact on the door panel and the operation panel and gently tap it in the sliding direction See figure 4 Figure 6 Connector 39 OPERATING PROCEDURE PHOTOS 8 Door closer 1 Remove refrigerator compartment doors right and left 2 Turn the doors upside down and remove screws 1 screw each of door stoppers for vegetable compartment door right and freezer compartment door left See photo 19 3 Remove door closer See photo 20 Note CD Refrigerator doors should be opened 90 degrees at the time of installation or removal Photo 19 Photo 20 Refrigerant compartment door Upside down refrigerator compartment door 9 Rotational heater board 1 Remove 4 fixing screws to remove the rotational heater board Se
54. heck if Not rotating machine chamber fan motor is rotating Room light is not turned on Running and off board is connected properly If it is replace the control board Y Check if CNAD connector on control Y Check the door switch for continuity 4 Open and close the refrigerator door several times and check if the room light will be turned on and off on the contro Check the continuity by Abnormal Contact failure of disconnecting the CN7S connector board See Connect it properly Room light should get turned off when the door comes figure below 10mm close to the refrigerator body turned off 8 Open and close the ice making compart ment door and from the space of refrigerator compartment door check that the room light is turned on and off Room light is turned on and off properly Check if there is continuity in 6 pin fan motor connector in No continuity Close the refrigerator compartment door until the light is Normal Check if the connector on the door switch is connect ed properly If it is replace the door switch Connect the connectors properly versa compartment Door switch for refrigerator compartment right and left and ice making compartment R door right left closed Doors Any of the doors Door M O main P compartment close xlf any one o
55. ic wraps may be needed according to the amount of vegetables vegetable condition length of storage or in case the item to be stored emits strong smell Vitamin C Polyphenol increased by increased by approximate approximate ly 15 5 ly 10 5 Irradiation of LED The UV LED lights activates stimulates vaut of vegetables and lyphenol Vitamin C ed ate of Rate of change n change in New veget moun x moun Vi A 8 Amount of vitamin Cathe time of purchase Ambunt of polyphenol at the time of purchase Broccoli sprout 90 9 20 40 60 100 115 Cress stored for 95 0 20 40 60 80 100 110 stored for three three days days 4 Vegetable compartments which stimulate synthesis of vitamins in leaf vegetables As of Aug 24 2004 Research by MITSUBISHI 5 Vegetable was wrapped and stored under the LED light Condition temperature 5 C humidity 90 Effect may change due to factors such as position of vegetables so the other vegetables block the light or stored amount 2 SPECIFICATIONS SPECIFICATIONS MR G50M C Power supply 110V 60Hz Total capacity 495 R 263 F 90 V 95 1 16 S 31 Dimensions H x W x D 1811 x 685 x 709 Cabinet Acrylic resin coated steel Food liner ABS resin Cabinet Foamed polyurethane Cyclopentane Insulation Freezer door Foamed po
56. ilure When R damper is open V heater is turned on When R damper is closed V heater is turned off Display Error code Trouble Detecting method Check point Treatment Control E o o pus o 1 2 Trouble of ice making compart ment thermistor When there is a short or open circuit in the ice making compartment ther mistor 1 Connector CN7S on control board 6 pin 9 pin relay connector 2 Check the resistance of thermistor Repair the contact failure Replace When ice making compart ment is used as refrigerator synchronize damper with R damper When ice making compartment is used as ice making synchro nize 1 with F damper Trouble of outside air thermistor When there is a short or open circuit in the outside air thermistor Replace the operation P C board Compressor is activated at Speed level 2 Trouble of defrost heater 6 When defrosting is not finished in 2 hours 1 Connector 2 on control board Defrost heater plug and receptacle 1 pin relay connector Thermal fuse 4 pin 8 pin relay connector 3 Check the continuity of thermal fuse Repair the contact failure Replace The defrost heater is stopped and if the next defrosting fin ishes in 2 hours the error code will disappear Trouble of refrig erator fan motor When motor do
57. ion of the door closed Change of display Ex When making the damper Kind of Refrigerator Slide chilled Ice making Versa Freezer of refrigerator compartment damper compartment compartment compartment open gt 0 en Display a a R BEBE 1 Damper to 2 2 to open KT be set up to close 1 Press to select the damper to be set up BENE beep sound is heard and the kind of damper is changed every time is pressed gt Refrigerator compartment Slide chilled compartment Ice making compartment gt Versa compartment Freezer compartment 2 Press O to 2 to open the damper or to close the damper 3 Press Q for about 3 seconds to convey the setting to the damper A beep sound is heard if the setting has been conveyed After the setting is conveyed the damper starts operating vani lt Q Ad ps Staris b Fu th Slide chilled compartment damper is not mounted on this w en e operatlon stope attornalically kawsa Nore ja e refrigerator Although slide chilled compartment is displayed setting cannot be changed when the damper is operating and can be set the setting is invalid Release With the door of ice making compartment left open simultaneously press O and O for about 3 seconds until a beep sound is heard The screen re
58. le compartment In partition V F Water pipe heater Measure the resistance with a tester Ambient temperature Room temperature Ee Normal Abnormal faulty 2 1kQ Approx Open circuit Q Operation method When ice making thermistor has reached approx 10 C or below the heater is turned on with energizing rate adjust ed by the set temperature of refrigerator compartment and freezer compartment Under the water tank holder Components Part Name Check Method and Criterion Parts Mounted Position Divider heater 1 5 Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty 3 9kQ Approx Open circuit While compressor is operating the heater is turned on When compressor stops the heater is suspended for the first 20 minutes and then reactivated Operation method In partition 1 5 Rotational heater board 1 Measure the resistance with a tester Ambient temperature Room temperature Normal Abnormal faulty 1 5kQ Approx Open circuit o While compressor is operating the heater is turned on When compressor stops the heater is suspended for the first 20 minutes and then reactivated Operation method In the rotational heater board of refrigerator compartment Ice making
59. left open simultaneously press and for about 3 seconds until sound is heard and nn ou blinks mt O mark is not on the display which shows the compressor stops If the n B mark is on the Ex When the rotational speed is 56 rps LU Press with the door left open ILI Changing the rotational speed BEBE EKE After the setting is complete press O and the rotational speed of compressor alternately changes in 10 steps The rotational speed rps is shown on the panel Basically the compressor starts operating at level 10 however it depends on model or specification change Normal Level 0 Level 1 4 Level 2 Level 3 Level 4 Level 5 4 Level 6 lt Level 7 P Level 8 Level 9 Level 10 Low speed lt gt High speed Note Operation sound may get increased in the process of changing the speed but that does not mean any problem Check the operation sound when the rotation is stabilized ON and OFF of machine chamber fan motor Under this function fan motor in machine chamber can be switched on and off at each press of RT switch The on off state is shown with D mark on the panel Machine chamber fan motor Display of ON Displayed OFF
60. lyurethane Cyclopentane Refrigerator door Foamed polyurethane Cyclopentane 7 Freezer Cooling system Forced air convection Refrigerator Forced air convection Evaporator Fin and tube type Condenser Cabinet cabinet ceiling sides back and front flange Defrost system Automatic heater defrost Drain Automatic drainage Forced evaporation method Temperature control system Automatic control Refrigerator compartment room light 110V 10W E12 Free pocket L Free pocket S Bottle pocket S Bottle pocket L Tube stand AUTO shelf Two way flexishelf Small item case Free egg shelf Slide chilled case Slide chilled case lid Accessories Versa case Aluminum tray Versa case Water tank With light type bacteria removing filter Freezing case upper Freezing case lower Ice server Two layer soundproof mat Ice storage bin Vegetable case Vegetable stand Sliding case Vegetable case Drain pan Toe grille Unit 97 Weight Shipping 104 Capillary tube 1 8 x 20 82 x 2700 Desiccant molecular sieve 9 Refrigerant filling capacity R600a 72 Refrigerating oil Model 187 FREOL S10 ELECTRICAL PARTS SPECIFICATIONS MR G50M C Model EFI100E 13DAH Power supply 110V 60Hz Ra
61. nute for self check gt kMotor damper is combined with See Self check method and its operation D Ice making control panel assembly test operation at page 14 Y Normal i i Yes Is the motor damper for refrigerator compartment slide compartment covered with frost Y Check the refrigerator compartment thermistor Refrigerator compartment Put refrigerator compartment thermistor into ice water 0 C dis thermistor abnormal Replace the refrigerator connect the 4 pin connector and measure resistance between compartment thermistor white and white Resistance at O C approx 6 7kQ Check the chilled compartment thermistor Chilled compartment Put chilled compartment thermistor into ice water 0 C discon thermistor abnormal Replace the slide chilled nect the 6 pin connector and measure resistance between 3 compartment thermistor white and white Resistance at approx 6 7kQ Adjusting set temperature by cutting pattern jumpers By cutting the pattern jumper of temp control board set temperature for each compartment can be changed Pattern jumper is located at the position indicated in the figure below on the temp control board To change the set temperature cut out the corresponding pattern together with the board Caution Make sure to unscrew the back of operation panel and remove the decoration panel before cutting the pattern jumper To cut the board use a nipper or a
62. ort beep sound is heard at each Ex When defrost thermistor press and the thermistor is changed in the order below reads 28 Defrosting Refrigerator compartment Slide chilled compartment I Ice making compartment Versa compartment gt Ice making tray N Vegetable compartment Freezer compartment Outside air x The defrosting thermistor is always selected first at the beginning of the setting Release With the door of ice making compartment left open simultaneously press O and O for about 3 seconds until a beep sound is heard The temperature of thermistor disappears Ce and the display gets back to current temperature Ke The function is automatically released one hour later Follow the procedure above to release this mode For the protection of the compressor avoid releasing it by plugging and unplugging the power cord 6 Change mode of compressor rotational speed Operation sound can be checked by changing the rotational speed of compressor Always conduct a check while the compressor is operating and the display unplug the power cord and then plug it in a few seconds to operate the compressor Also this function is not available during the following modes Child lock Demonstration Cooking timer Thermistor temperature check and error code display Setting RT With the door of ice making compartment
63. ot be released by simply turning on off the power supply 3 Fine adjustment of temperature Fine adjustment of temperature is available for refrigerator compartment freezer compartment and versa compartment As for versa compartment however it is only available when the compartment is set to or gt Setting _ Press Z switch to select i refrigerator compartment freezer compartment or versa compartment Simultaneously press 999 and for about 3 seconds until a beep sound is heard 338 The indication changes s show in the right os Fine adjustments of temperature WERE da Temperature adjustment is made by approximately 0 3 0 5 C by pressing rej and it is indicated with 15 steps bars on the panel The temperature displayed on the panel however changes by 1 C and might not change according to fine adjustment 808 88 Example of display b cs do In case of versa compartment Press E to make versa compartment function as refrigerator or freezer When the blinking marks on the display E or 3 are lit in seconds apply fine adjustment of temperature Release Follow the same procedure as setting and the finely adjusted temperatures are reset for refrigerator compartment freezer compartment and versa compartment at once 4 Ice making test Self check This function is not available during the following modes Child lock Demonstration Cooking timer Changing the rotational speed
64. pin relay connector in machine chamber and measure the resistance between each terminal of and Pont 1 Approx 9 3Q At 20 C Yes Is compressor being energized at startup Measure the resistance of compressor s winding between each terminal Point 2 Approx 9 30 At20 C Y Yes Replace the lead wire connected to compressor Replace the control board Replace it only when error display keeps blinking even though all the above mentioned connectors are properly connected Exchange the unit Yes Exchange the unit 3 Recheck after treatment After any treatment is tried unplug and plug power cord again to check if the compressor operates properly lf the compressor can operate properly for more than 1 minute after power cord is plugged again it s presumed that the cause of trouble is eliminated If the cause of trouble cannot be eliminated 58 will be displayed again 1 minute later after the power cord is plugged again the control board has been replaced 55 won t be dis played even though the cause of trouble is still not elimi nated In such a case perform the ice making test opera tion 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 22 Poor cooling
65. plugs it iy 10 minutes reset function malfunctions rotate Check the error code by performing the ice making test operation 5 display No error code display Replace the control board Explan to customer Abnormal start Compressor Compressor Start up motor gets locked does not Defective circuit rotate Measure the Abnormal on control board Disconnect 6 pin resistance synchronization Defective contact Connector m of compres of CN50G on machine chamber No sors winding to check resist b h Trouble of control board gt between eac ance between terminal of overcurrent Defective contact ena o d each terminal of 9 and Are etection of machine 7 and Are h 9 3 chamber 6 pin they approx 9 3Q QOO connector 20 C i Y I es Yes Replace lead wire assembly C Exchange the unit Check the connection of the Abnormal connector CN50G on tartup control board or the machine chamber 6 connector Y Yes Y Normal Exchange Replace the the unit control board Connect them properly If control board is normal compressor is energized every 10 minutes Compressor vibrates at startup when it is being ener gized Touch it with your hand to check
66. pply wiring such as power cord and nals of CN1 on filter board breaker etc Y Yes Does AC 110V run between 9 and 5 termi nals of CN2 on filter board Replace the filter board Yes I o o o c o o o o I o E Detach each connector CN2A on No control board check the continu NP M reni continuity otor protector open circuit ity between terminals and D measuring the resistance respectively Check if there is short or open ensure that the circuit is open circuit in the motor protector Continuity detected Abnormal No continuity 3 Detach connector CN50G on con Disconnect 6 pin connector trol board and check the resistance in machine chamber to check respectively between terminals of resistance between terminals of and approx 9 30 O and approx 9 30 Normal gt Check connector contact Continuity detected Abnormal Abnormal Check the error display of self Measure the resistance of com check after turning on and off the pressor s winding between ter power supply minals of black white and red With all the connectors connected approx 9 30 Normal Replace the lead wire Exchange the unit gt assembly Lead wire of 6 pin connector in machine chamber compressor Inve
67. r for freezer com dampers Refrigerator compartment and slide compartment ther tion partment mistor is visible Does the baffle open close Wait 1 minute for gy xReplace the fan grille as well as the motor self check See Serf check and error display method and operation Ice damper since they are combined together making test operation at page 14 When conos ET xchange STR Norma sor operates LCD the unit j cul indicates 2 as a Check freezer compartment thermistor result of self check Dip freezer compartment thermistor into ice water 0C and measure the resistance between terminal white and white by detaching 6 pin connector at the left back bottom of vegetable compartment Resistance at 0C approx 6 7kQ 2 Freezer compartment Freezer 8 pin connector compartment thermistor Defective thermistor Replace freezer compartment thermistor Motor damper for freezer compartment Not cooling at all In case any error codes doesn t appear as shown in page 21 22 even though mode switch is pressed for 5 seconds Control board Yes 1s refrigerator in the demonstration mode Release the demonstration mode See page 10 No Y Does 110V run between and termi Inspect power su
68. ration P C board Refrigerator compartment thermistor 73 18 is indicated Slide chilled compartment thermistor 14 Vegetable compartment thermistor 75 Replace the Filter board Yes Outside air thermistor 78 No error code is is indicated Is there resistance of 2kO on the wiring side resistance Is there a short or open circuit in each thermistor and is the resistance 00 or Q No gt of vegetable compartment heater 1 between connector CN3A 7 and CN2A 9 on control board with 2 pin con nector disconnected Is there a resistance of approx 2kQ between 7 and 8 terminals of 8 pin connector which is located Replace the defective thermistor Check the contact of con nector connecting each thermistor and connector CN7S on control board Fix the incomplete contact Yes It may have contact failure of connector Recheck the contact after the 8 pin connector is connected Yes fs there resistance of 1kQ on the wiring side resistance of vegeta h ble compartment heater 2 between connector CN3A 7 and CN2A on control board with 8 pin connector disconnected J When the vegetable compartment is cooled excessively Is there voltage AC110V between connector CN2A Gray and CN3A Yellow green on control board Measure the voltage for over 10 seconds When an analog test
69. rator Engage part 002 to the side plate of part 001 and slide it to the direction indicated by the arrows to secure it to the piping in the middle column at row 1 and 2 Right side of evaporator Slide part 003 to the direction indicated by the arrows Set the entering pipe into the notch and secure it to the piping in the middle column at row 2 and 3 38 OPERATING PROCEDURE PHOTOS 6 Parts inside the refrigerator compartment Left rail of the slide compartment gt Parts inside the ice making compart ment gt Ice making compartment door gt Tank holder gt Door switch 1 Remove the parts inside the refrigerator compartment See procedure 2 3 2 Remove the left rail of the slide compartment See procedure 3 3 Remove the parts inside the ice making compartment 4 Remove the ice making compartment door Tank holder 5 Remove a screw on the side of the refrigerator compartment 6 Loosen screw 3 screws halfway on the side of the ice making compartment Put a screwdriver on the head of each screw and top the bottom side of the holder softly to detach it See photo 18 7 Lift up the tank holder from the refrigerator compartment to remove it Note CD Put the lead wires in place so that they do not get caught in water supply channel amp Put the tank holder in place so that the water does not leak from it Door switch 8 Insert a minus screwdriver between switc
70. ray is rolled over and the System is reset The ice tray rolls over once to drop the ice then return to the original position Water pump motor is operates Remove the lid of the water tank then check the sounds of water running gt Detection lever Never touch the automatic ice maker while it is operating After the operational test a popping sound is heard several times because the operation of two way valve is checked auto matically During the operation do not insert a hand into the automatic ice maker 4 Maintenance for water pump and water pipe Water pump amp Light type bacteria removing filter 4 Remove the light type bacteria removing filter 1 Pull out the pipe 2 Turn the tank pump to detach Water tank Tank lt 18 Le QS A A i Water pump and wash it in water Normally the filter need not be replaced However replace it in the following condition When the filter is clogged by passing something other than water through the filter When the filter is broken In such a case contact the dealer that you purchased this 3 Pull out the tank pipe turn the cap to remove and then wash the propeller with water The propeller is made of the magnet Wash it well with water Tank pipe Water pipe Tank holder lt Propeller 1 A een Cover 7 x 8 so that no alien sub refrigerator stance remains on it 0
71. rter related parts may be Compressor defective Conduct ice making Motor test operation See page 21 for protector error codes Filter board CN1 CN2 OG Noise filter E Control board Inverter related indication Compressor does not operate Abnormality Possible cause Symptom Treatment Trouble of When there is Compressor Replace the control board inverter circuit any trouble in the does not circuit which rotate detects phase current of com pressor Bus bar Power supply Compressor voltage is voltage is does not Arrange abnormal abnormal rotate power sup ply to obtain i easure the voltage of Defective reactor power Supply the rated on the N F board voltage 280V or more 90 130V Arrange power supply to make the voltage within 90 130V and conduct the following checks Y Does AC110V run Check the between CN51 ter connection Connect minals and on between filter them the control board board and roperly See page 32 control board oe Yes Replace the Replace the control board filter board Trouble of When the inverter Compressor h lug it in 10 mi inverter software driving software does not Unplug the power Cord aether
72. rtments individually RT z gu When setting the operation mode Press Switch and display the of refrigerator vegetable and required compartment to apply the the same time freezer compartment to Middle at automatically It automatically finishes about 2 hours later function of temperature adjustment or quick mode Em Press until a beep sound is heard Switch for about 3 seconds Convenient function Cooking timer EA RE Ba Press switch and switch for 1 second at the same time is displayed Cooking timer can be released in the same way 1 Cooking timer mode is set and 0 blinks ESRB i EXE Set the time with Switch Press to start Alarm sound will annonce the completion of cooking period 1 99 minutes To stop the timer halfway through the operation press again Child lock ES 2 Press O switch and switch for 3 seconds at the same time 4 is displayed Child lock can be released in the same way Ice making stop m 3 Press 7 to select ice pr compartment Select amp EKfg1E with tom of LED for bacteria removal from water tank ou 4 to select vegetable compartment EE T mE Press re Switch and Switch for 3 seconds at the same time 26 15 displayed Operating mode and Temperature range Compartment Mode Temprange Refrigerator Approx 0 to 6C Chilled Approx 2
73. s UV LED Blue LED 12V DC Photosynthesis LED 3 pieces UV LED 1 piece Blue LED 1 piece Timing in making contact Photosynthesis LED Always UV LED Blue LED After water is supplied and full ice is detected When the door of refrigeration compartment ice making compartment or freezer compartment is open 5 minutes maximum Abnormal condition Means Check with the diode range of tester Use a tester equipped with diode range Photosynthesis LED The pointer of the tester does not shake when measuring between 4 pin connector No 1 and No 2 Make sure the pointer of the tester does not shake even if the polarities are reversed Resistance Short circuited 0 UV LED Blue LED The pointer of the tester does not shake when measuring between 4 pin connector No 3 and No 4 Make sure the pointer of the tester does not shake even if the polarities are reversed Resistance Short circuited 00 LEDs light in following Note LED cannot be replaced Photo On the ceiling vegetable com partment Vegetable compartment LED board synthesis UV LED LED NE Blue LED colors at the above timing Photosynthesis LED Orange individually because it is combined with the UV LED Bluish white Blue LED Blue fan grille and partition VIF UV Blue Photosynthesis Use a tester equipped X with a diode range KE
74. ted input 45 159 1620 4800rpm Compressor w A Starting current 2 0 Current limiter Running current A 0 63 2 19 1620 4800rpm Winding resistance A T 20 C 9 270 Model MM3 71CCV Ambient temperature C Motor protector 25 Time 16 or less Current A 17 0 Model Two way valve NSCEOOODA1 Type 4 phase stepping motor drive voltage DC12V Defrosting Model Control board timer Specification Microcomputer Defrost finish Thermistor 14 1 5 Freezer Thermal fuse 70 2 Defrosting control compartment Defrost heater 80 70 110V 150W Deodorizing function of defrost heater Not equipped Model UDQMO02B3 Type DC brushless motor Refrigerator Input 2 4 12V DC Revolution 1520 12V DC Number of poles 10P Model UDQMO04B3 Fan motor Type DC brushless motor Machine Chamber Input 1 12V DC Revolution 1200 12V DC Number of poles 10P Water pipe heater 110V 5 7W Rotational heater board 110V 8 0W Heater Divider heater 1 5 110V 3 1W Rating Vegetable compartment heater 1 110V 6 0W Vegetable compartment heater 2 110V 3 1W Ice making tray heater 110V 10 0W Tank heater 110V 3 1W Duct heater 110V 3 1W Ice maker temperature 11 6 NTC thermistor Model
75. the circuit is deemed short circuited 4 0 6 Once amp is detected other errors would be ignored and not displayed on the panel Characteristic value may change in order to improve the product The error codes 58 to 55 are not displayed even if those abnormalities occur at power input Error display starts after it is regard ed 55 Error display continues until defrost ing starts or cooling operation gets back to normal Error display doesn t disappear by unplugging and plugging the power cord 7 Try to restart compressor every 3 minutes Therefore be sure to perform ice making test operation in order to check if any abnormality indicated by these error codes occurs See page 14 7 If those errors still continue for 1 minute after the restart 55 will be displayed again 16 6 3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD MR G50M C Operation P C board Setting up temperature feature quick mode and eco mode for each compartment Display of self check Outside air thermistor Buzzer Control board Control circuit of refrigerator Inverter control circuit of compressor Read control each compartment tempera Inverter control of compressor ture Neuro fuzzy Inverter drive power module Control on timers Detection of bus bar voltage Operation control of the parts such as fan motor or heater etc equipped inside outside y
76. the cover See photo 9 Photo 7 Right rail of the slide compartment 7 Control panel Photo 8 Photo 9 Left rail of the slide compartment Control panel 35 OPERATING PROCEDURE PHOTOS Control panel Duct R 4 Remove rivet and pull out the mirror hinge on the lower left of the control panel to remove the connector See photo 10 b Remove rivet 2 rivets in the upper left and right side screw amp 1 screw in the lower left side Detach catches 7 places See photo 10 Control panel assembly The assembly consists of the following Control panel refrigera tor compartment thermistor slide chilled compartment thermistor room light socket refrigerator compartment room light and duct R Caution on assembly To prevent poor contact of connectors connect them properly Fix the control panel by inserting the lower catches 2 places Photo 10 Rivet TES Mirror hinge ne a Control panel T 2 into the floor of refrigerator compartment Rivet 4 Parts inside the versa compartment gt Ceiling of versa Photo 11 _ compartment 1 Take out interior parts of versa compartment 2 Lift up and pull out the versa compartment door Rive T Ceiling of versa compartment et Rivet 3 To detach the ceiling remove rivet 3 rivets and pull down NN the ceiling See photo 11 Caution on
77. tion S V lg Cre Photo 14 J Tank holder n Automatic Ice maker NEW Cover IM Catches Cover 36 OPERATING PROCEDURE PHOTOS Cover upper 7 Remove rivet 1 rivet to detach the cover See photo 15 Cover lower 8 Remove rivet 1 rivet to detach the cover See photo 16 Partition V F 9 Remove screw 4 screws on inner wall and screw 2 screws at the front Detach three connectors and lift up the partition See photo 15 Connector cover right left 10 To detach connector cover remove rivet B 2 rivets each and catches 2 places See photo 16 11 Detach the connector Fan grille 12 To detach fan grille remove screw 2 screws on right and left side rivet 1 rivet on left side and detach upper catch es 3 places x Fan grille consists of the following motor dampers for ice making compartment refrigerator compartment versa com partment refrigerator fan motor fan thermal fuse vegetable compartment heater 1 4 thermistors See photo 16 Evaporator 13 Detach catch protruding from drip tray See Figure 1 to remove evaporator Defrost heater Drip tray 14 Detach catch on drip tray See Figure 2 and slide out defrost heater toward you Remove heater roof and heater cover from defrost heater Remove the aluminum tape and then remove drip tray Defrost thermistor DEF thermistor 15 Cut the binder
78. to 2C Soft freezing Middle Approx 9 to 5 C Freezer Approx 18 to 16 C Ice makin Refrigerator pprox 0 to 6 C compartment Ice making pprox 21 to 17 C Ice making stop Approx 21 to 17 C legetable compartment Middle Approx 3 to 9 Middle Approx 21 to 17 C Versa compartment When stopping quick mode halfway Press O switch again When stopping quick mode of all compartments at once an Press switch for about 3 seconds against one of the compartments which is in QUICK MODE 3K To reset the unit to the initial setting press for 3 seconds The setting of the refrigerator compartment vegetable compartment and the freezer compartment will be set to Middle and fast cooling operation energy saving operation and cooking timer setting for all compartments will be canceled To use ice making compartment as compartment IN refrigerator gg _ to select ice making compartment akan Press WX for about seconds let flash After ice making compartment is set to function as refrigerator take ice or water out of the ice tray which are automatically dropped into ice storage bin When ice making function will not be used for a while wash the water tank well with water and place it back after drying thoroughly To get back to ice making just change the temperature setting x The temp range le
79. turns to the temperature display This function is not automatically released Follow the procedure above to release this function For the protection of the compressor avoid releasing it by plugging and unplugging the power cord 12 8 Error history display mode Error history can be observed in the error history display mode Use this mode when the actual problem of the refrigerator is different from the error which was displayed at the service call received QD Setting a Open the door of the ice making compartment and press 9 and together for seconds until a is heard and 8 8 blinks With the door left open press 2 and together for 3 seconds until is heard O O Display details Same as the error display and trouble locating Refer to 6 2 3 When there is no recorded error will be displayed r When several errors have occurred error will be displayed in the increasing numerical order as in the error display and trouble locating Ex In case errors in the ice tray thermistor 2 refrigerator thermistor 17 and refrigerator fan motor 3 have occurred IU ioi I I3 Check points and resetting the error history 1 1 Follow the procedures for self check and take the appropriate measures After the self check is completed and measures are taken perform self check to confirm
80. y 3 times 1 The buzzer rings to inform the open door when the door of ice making compartment refrigerator compartment or freezer compartment is left open for more than one minute The buzzer rings every minute After 5 minutes the buzzer rings continuously The buzzer will stop ringing as soon as the door is closed When the buzzer does not stop even if all the doors are closed door switch may be abnormal The buzzer can be stopped by the following operations Perform the ice making test operation Note If the test is conducted with water in the ice tray water may fall into the ice storage bin because the tray is rolled over in the ice making operation 2 Buzzer sounds when a trouble is found in refrigerator fan motor or in machine chamber fan motor 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 on page 14 3 Buzzer sounds when there is possibility that the door of freezer compartment is not closed securely The assumption is made in either of the following conditions When the door of freezer compartment is closed and the temperature inside did not lower after a predetermined time The temperature of freezer compartment is abnormally high and the temperature of evaporator is abnormally low con tinuously for a long time Room light Room light inside the refrigerator comp
81. y the ice making Water filling time is longer Replace the control Chained test than 9 seconds board water leaking from 13 8 spill at the installation of water tank or more water over the full water level may cause to from chained Ine 14 Measure the water pump coil resistance Open or short circuit Change the water pump motor 18 6 5 FLOWCHART OF TROUBLE CRITERION MR G50M C Excessive cooling No cooling poor cooling Are the temperatures i Are the temperature of Setien of refrigerator compart No ures refrigerator compart No en E ures ment set to Low j ment set to High 1 Refrigerator compartment Slide chilled compartment Yes Yes Only food around the Open the refrigerator Yes Keep the food away No re to 5 at page compartment door with jg air blowing part get fro from the blowing part a magne on the door 23 zen switch to check that cold air blows from the outlet No See x1 Yes Replace the motor damper for refrig Expose the damper for refrigerator compartment slide com partment so that its operation can be visibly checked and erator compartment slide chilled conduct an ice making test Does the baffle open close The baffle does not operate Compartment Wait 1 mi
82. zontally Too much space Not enough space _ Lj d LLL A gt B More space in outer side D A B Too much space between the ice A B Small space between the ice Or making compartment and versa com making compartment and versa com A B More space in inner side partment doors partment doors Misaligned versa Misaligned versa compartment door compartment door Misaligned ice Misaligned ice making making compartment door 4 compartment door Q Place spacer set under the Replace roller set of the right Replace roller set of the right outer roller of the tilted door and left versa compartment and left versa compartment doors ice making compartment door doors a To adjust about 0 5mm in the above illustration to a To adjust about 0 5mm replace with roller set A adjust position replace with roller set C b To make large adjustment b To make large adjustment replace with roller set B Place spacer set under the replace with roller set D 8 Replace lower roller set of the inner roller of the tilted door Replace lower roller set of the ice making compartment door ice making compartment door ice making compartment door c To adjust about 0 5mm in the above illustration to To adjust about 0 5mm replace with roller set C adjust position replace with roller set A d To make large adjustment d To make large adjustment replace with roller set D replace with roller set B Solution

SERVICE MANUAL MR-G50M-T-C MR-G50M-W-C

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