REFRIGERATOR Model Name : RB195/215B* (Model Code) REFRIGERATOR PRODUCT FEATURE ● Reversible Door ● Auto Ice-Maker ● Fridge Wire Box For the latest parts information, Please access to our service web site (http://itself.sec.samsung.co.
WARNING IMPORTANT SAFETY NOTICE The service guide is for service men with adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or dealer cannot be responsible for the interpretation of this information. SAMSUNG ELECTRONICS AMERICA, INC. Technical Service Guide Copyright ⓒ2005 All rights reserved.
Contents 1. INSTALLATION ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 4 2. NOMENCLATURE∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙4 3. PRODUCT SPECIFICATIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙5 4. ELECTRICAL PART SPECIFICATIONS & STANDARD∙∙∙∙∙∙∙∙∙∙∙∙∙5 5. WARRANTY INFORMATION ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙7 6. INTERIOR VIEWS AND DIMENSIONS∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙8 7. REFRIGERATION CYCLE AND COOL AIR CIRCULATION ROUTE ∙∙∙∙10 8. MECHANICAL DISASSEMBLY ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙12 9.
1. INSTALLATION 1) To protect refrigerator in movement Use padded hand truck from side only. 2) Remove all protective tape and pad from the refrigerators. Connect power cord. Adjust the clearance between the doors. 3) Temperature controls and preset in the factory for recommended settings. The refrigerator should runs smoothly and lower the temperature gradually. 4) Once the refrigerator temperature is sufficiently low It is recommended to store foods in the refrigerator.
3. PRODUCT SPECIFICATIONS Model RB195BSSW, RB195BSSB, RB195BSVQ, RB195BSBB RB215BSSW, RB215BSSB, RB215BSBB, RB215BSVQ Type BMF 2 Door Temperature control Electronic control Total 18.7 20.4 Freezer 5.9 6.5 Refrigerator 12.8 13.9 32.3 X 28.3 X 69.9 32.3 X 30.3 X 69.9 Net Capacity 3 (ft ) Net dimension (W X D X H) Foam Cabinet insulation CYCLO-PENTANE Door insulation CYCLO-PENTANE Cabinet A.B.S Door A.B.S Liner 227 Net weight(Ib) 241 4.
ELECTRICAL PART SPECIFICATIONS & STANDARD ITEM STANDARD Temperature Type Freezer F-Sensor Type Refrigerator R-Sensor Temperature Selection ON(℉) OFF(℉) –14℉ –12.0℉ –16.0℉ –2℉ 0℉ –4℉ 8℉ 10℉ 6℉ Temperature Selection ON(℉) OFF(℉) 34℉ 36℉ 32℉ 38℉ 40℉ 36℉ 46℉ 48℉ 44℉ First Defrost Cycle (Concurrent Defrost of F and R) Defrosting 4hr ±10min Defrost Cycle(FRE) Min. 12hrs, Max. 22Hrs Defrost Cycle(REF) Min. 6hrs, Max.
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6. Interior Views and Dimensions 6-1) Shelves and Bins • Deli drawer • Door Bin Pull it out to disassemble. Push it up and slide it out to disassemble. Light • • • • Gallon Bin • Glass Shelf • Pull it out until its stop Tilt down and slide it out.
Interior Views and Dimensions 6-2) Dimensions of Refrigerator (Inches) MODEL A B C RB195 RB215 24.3 28.3 57.8 26.3 30.3 59.
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Refrigeration Cycle and Cool Air Circulation Route 7-2) Cool Air Circulation 11
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Mechanical Disassembly Control Panel 1. Remove the screws. 2. Pull out the control panel. 3. Disconnect the wire connector.
Mechanical Disassembly Warning Always unplug the power cord before replacing the refrigerator lamp. There is the danger of electric shock. Refrigerator Light Freezer Light 1. Remove the screw. 1. Remove the cover by pressing the bottom tab. 2. Remove the lamp cover by unlocking the tabs and pulling the cover down. 2. Replace the two bulb by turning it counter-clock wise. 3. Replace the lightbulb by turning it counterclockwise. 3. Reattach the cover and check the lamp by pressing door switch. 4.
Mechanical Disassembly Evaporator Cover in the Refrigerator 6. Disconnect the wire connector. 1. Remove all shelves and drawers from the refrigerator. 2. Pull out the screw caps with a small flat-blade screwdriver. 3. Remove 6 Phillps screws from the cover. ■Ductwork of the evaporator fan assembly. 4. Unlock the 2 tabs with a flat-blade screwdriver on each side of the bottom cover. 5. Remove the evaporator cover by pulling out from the bottom of the evaporator cover.
Mechanical Disassembly Evaporator Cover in Freezer 5. Disconnect wire connector from the top-left corner. 1. Remove all drawers from the freezer. 2. Remove screws (2) from the support rail. 6. Remove 2 screws from the rear cover of the freezer evaporator and unlock the tabs to remove it. 2 screws 3. Pull down the holder of the support rail and disconnect the wire connector to remove it. ① ② 4. Unlock the tabs around the evaporator cover from the buttom.
Mechanical Disassembly Evaporator in Refrigerator Evaporator in Freezer Evaporator is located in the bottom of refrigerator. 1. Take off the ductwork in refrigerator. 2. Disconnect the wire connector.(Heater and Thermistor) 3. Desolder the capillary tube and the suction line from the evaporator. 4. Remove the evaporator. 5. With a file, score the capillary tube just upstream of the soldered point. Break off the soldered section to help prevent solder from plugging the tube during soldering. 6.
Mechanical Disassembly Machine Compartment ＆ Electric Box 3. Mechine compartment assembly Make sure the power cord is unplugged before replacing any Warning electric components. 1. Unplug the power cord. 4. Disassemble the electric box cover after removing the screws with a Phillips screwdriver. 2. Remove the screws of the compartment cover. Slide it up and take out from the refrigerator. 5.
9. REVERSING THE DOOR SWING Read these instructions completely and carefully - IMPORTANT NOTES Warning Unplug the refrigerator from its electrical outlet. Empty all door guards / racks. 1. If you want to change the door direction, call 1-800-SAMSUNG. 2. Read the instructions carefully before starting. 3. Handle parts carefully to avoid scratching paint. 4. Set screws down by their related parts to avoid using them in the wrong places. 5. Provide a non-scratching work surface for the doors.
REVERSING THE DOOR SWING 5. Disassemble the fridge door by lifting it upward. Be careful not to drop and scratch the fridge door. Read these instructions completely and carefully - ASSEMBLY OF FREEZER DOOR 8. After removing the screw, disassemble the Cover Hinge(left) and the Hinge(right). Hinge Cover Hinge - DISASSEMBLY OF FREEZER DOOR 9. Move the hardware found on the right side of the cabinet to the left and vice-versa. 6. After removing the screw and two bolts, disassemble Hinge Mid.
REVERSING THE DOOR SWING 11. Move the hardware found on the right side of the door to the left and vice-versa. 12. Disassemble the Door S/W with tools. Be careful not to scratch. Read these instructions completely and carefully 14. Re-install parts in their opposing sides. Assemble the Door S/W as it is. (Make sure not to insert it upside down) 15. Assemble Freezer Door by fitting the lower hinge into the hinge grommet hole. Don't forget to insert washer with grease. Door S/W Washer 13.
REVERSING THE DOOR SWING 17. Reinstall the middle hinge on the left side of the cabinet. (Use the alternative hinge supplied) Don't forget to insert washer with grease. Read these instructions completely and carefully 20. Move the hardware from left side of door to the right side and vice-versa. Washer 21. Fit the fridge door into the middle hinge. 18. Confirm opening and closing of the door. 22. After removing the screw, dissemble the Cover-Cap Door and Cover Hinge. - ASSEMBLY OF FRIDGE DOOR 19.
REVERSING THE DOOR SWING Read these instructions completely and carefully 23. Place the Grommet and Cap wire taken from the left connector on the right connector. 26. Assemble the Cover Hinge with the screws. Cover Hinge Grommet Cap wire 24. Re-install parts in their opposing sides. Electric wires must be sealed in covers. 27. Finally, confirm opening and closing of the fridge door. 25. After securing the top hinge with the screws, connect the electric wire. 28.
10. INSTALLATION OF THE WATER LINE 10-1) Before You Install the water line • This water line installation is not warranted by the refrigerator or icemaker manufacturer. Follow these instructions carefully to minimize the risk of expensive water damage. • Banging pipes (water banging in the pipes) in house plumbing can cause damage to refrigerator parts and lead to water leakage or flooding. Call a qualified plumber to correct the problem before installing the water supply line to the refrigerator.
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Temp Control &Operation Functions 11-1) DISPLAY DESIGN 11-2) Temp Control Function 1) Freezer Temperature Control ※ When the Freezer button is pressed,the current set temp will be displayed.And, when the button is pressed again within 5 seconds,it will carry out the following 1-2)and when there is no button press,it will go back to the previous display. 1-1) The temperature will be selected between 8 ℉ and -14 ℉ at an interval of 2 ℉ by pressing one button.
Temp Control &Operation Functions 2) Fridge Temperature Control 2-1) The temperature will be selected between 46 ℉ and 34 ℉ at an interval of 2 ℉ by pressing one button. 2-2) When the Fridge button is pressed, the current set temp will be displayed.And, when the button is pressed again within 5 seconds, it will carry out the following 2 -3) and when there is no button press for 10 seconds, it will display the finally selected temperature. 2-3) The temperature will be selected in the following order.
Temp Control &Operation Functions 2) Super Cool Function 2-1) It is selected by pressing the Super Cool button. 2-2) When the Super Cool button is pressed once, Super Cool will be turned on. And then, it will repeat Off and On each time you press the button. 2-3) With the initial Power On, the LED is off. (When the F-Room temperature is over 41℉ (5 ℃)) Category Initial Power On Pressed Once Pressed Again Display Change OFF Super Cool OFF Other A.
Temp Control &Operation Functions 11-4) Ice Off Function 1) Ice Off Function 1-1) Year 2005 W2 Model is one with Auto Ice Maker and Ice Water Valve. 1-2) When the Ice Off button is pressed,the Auto Ice Maker does not operate. 1-3) Ice stored in the ice bin is available with the Ice Off button selected. 1-4) The Auto Ice Maker function is introduced in the Ice Maker function. 11-5) Child Lock Function 1) Child Lock Function It operates with the Child Lock button pressed for 3 seconds.
Temp Control &Operation Functions 11-6) Buzzer Alarm Function 1) Button Touch Tone ("DING-DONG") 1-1) When each button on the control panel is pressed,it will send out an input signaling "DINGDONG"sound. 1-2) When buttons are not pressed correctly,it won't send out the "DING-DONG"sound. 1-3) Buttons are recognized within 0.2 sec and when buttons are pressed continuously, it sends out only a "DING"sound. 1-4) This Button Touch sound has priority over other alarm sounds.
Temp Control &Operation Functions 11-8) Ice Maker Function (Only applicable to Model with the Auto Ice Maker function) - This Ice Maker function is an option.So,the following can be applied only to Model mentioned. - Ice Maker has an automatic ice production function without extra controlling by users. It is a kit performing a series of automatic ice producing operation that it supplies water and stores ice in the ice bin upon the completion of ice production.
Temp Control &Operation Functions 2-3) Water Supply/No Water Supply Evaluation by Ice Maker Sensor - When it passes one and a half minutes after the completion of water supply, it will evaluate Water Supply/No Water Supply by comparing the temp changes of the Ice Maker Sensor on the bottom of the Ice Tray. If the temperature of the Ice Maker Sensor is 35.
Temp Control &Operation Functions Low Water Pressure → High Water Pressure 5s 1.5s 1s 2s 5s 5s 58+(5)MIN 58+(5)MIN 58+(5)MIN Water Supply Water Supply Water Supply High Water Pressure Low Water Pressure 3) Ice Making Function - It is until the water in the Ice Tray is judged as completely frozen after the completion of water supply operation. And, it is judged by the sensor temperature (can be set to other values).
Temp Control &Operation Functions - 5th step:Restoration to Horizontal State (counter clockwise) The ice tray restores to its horizontal position by rotating the Ice Eject Motor counter clockwise When the Leveling S/W is ON (Low)after 5 seconds, it will stop rotating. At this point, the raised Feeler Arm will get lowered again and set on the highest point of stored ice to check the ice level.
Temp Control &Operation Functions 11-9) Defrost Function 1) The F/R-Room defrost depends on the accumulated comp-on time. 2) With the initial power on,defrost starts at the both rooms after 4 hour accumulated comp-on time. 3) The defrost cycle can be changed from Min 6 hours to Max 7 hours according to various conditions. 4) The defrost cycle depends on the ambient temperature,the frequency of F/R-Door open and the duration of the F/R-Door open.
Temp Control &Operation Functions 1-7) To cancel For ced Oper at i on,t ur n of f and on t he power or select the Test Cancellation Mode. 1-8) It will send out an alarm sound (0.25sec ON/0.75sec OFF)during Forced Operation until it is completed. It will keep on alarming regardless of the selection or cancellation of the alarm button. 1-9) When Forced Operation is selected, Super Freeze and Super Cool won't operate.
Temp Control &Operation Functions 11-12) Power Compensation Function 1) Notch Save Function 1-1) Whenever the Super Freeze, Super Cool, Fridge or Freezer button is pressed, it will save the current display setting. And, when the power goes off and comes back on, it will display the stored setting. (But, the Test Mode will not be saved.
Temp Control &Operation Functions 2) Self-diagnosis with initial power on 2-1) When pressing the Super Freeze button and the Super Cool button simultaneously for 6 sec during normal operation, the entire temperature setting display will blink for 2 sec at the interval of 0.5 sec and when pressing the Super Cool button and the Super Cool button si mul taneousl y for 8 sec including 2 sec blinking, self-diagnosis will be selected.
Temp Control &Operation Functions - Descriptions for each Self Diagnosis Lamp No Item Error Self Diagnosis SENSOR HOUSING SLIP-OUT, CONTACT VOLTAGE BETWEEN MAIN PCB CN30 DEFECT,WIRE CUT, WIRE SHORT, SENSOR TEMP MORE THAN 122℉ 2↔3 SHALL BE WITHIN 4.5V~1.0V. (+50℃) OR LOWER THAN 122℉(-50℃) 1 F-SENSOR 2 SENSOR HOUSING SLIP-OUT, CONTACT VOLTAGE BETWEEN MAIN PCB CN30 DEFECT, WIRE CUT, WIRE SHORT, R-SENSOR SENSOR TEMP MORE THAN 6↔7 SHALL BE WITHIN 4.5V~1.0V.
Temp Control &Operation Functions 11-14) Power Compensation Function It is the initial Sensor Error Display. Hold on the Super Freeze and the Super Cool buttons for 3 seconds and take off the fingers. Then, press the Fridge button. 1) During the normal operation,when the Super Freeze and the Super Cool buttons are pressed for 3 seconds at the same time, the Freezer and the Fridge temp LEDs will blink for 2 seconds at the interval of 0.5 second.
Temp Control &Operation Functions 11-15) Option Setting Function (EEPROM) - During the normal operation,when the Super Cool and the Freezer buttons are pressed for 12 seconds,the Fridge or Freezer temp setting display will be shifted to the Option Setting Mode. How to Control Option Mode Shift Button by Model When the Super Cool and the Freezer buttons are pressed for 12 seconds at the same time, the Fridge/Freezer display will be shifted to the Option Setting Mode.
Temp Control &Operation Functions Note Basically,when sending out products,their option will be all cleared. That is,their set values are all “0”. However, for the purpose of quality improvement, set values could be changed. Therefore, make sure to check quality information 2) After changing to the Option Mode,the display panel will blink "0"(ALL OFF)for R-Room and "0"(ALL OFF)for F-Room. (When sending out products, there shall be "0"set for R-Room and "0"set for F-Room.
Temp Control &Operation Functions 11-16) Option Table 1) F-Room Temp Shift Table Set Item F-Room Temp Shift Model Common (All Models) Option Item Set Value Freezer LED Fridge LED 0 Option Value 0 0 1 31.1℉(-0.5℃) 2 30.2℉(-1.0℃) 3 29.3℉(-1.5℃) 4 28.4℉(-2.0℃) 5 27.5℉(-2.5℃) 6 26.6℉(-3.0℃) 7 25.7℉(-3.5℃) 8 32.9℉(+0.5℃) 9 33.8℉(+1.0℃) 10 34.7℉(+1.5℃) 11 35.6℉(+2.0℃) 12 36.5℉(+2.5℃) 13 37.4℉(+3.0℃) 14 38.3℉(+3.5℃) 15 39.2℉(+4.
Temp Control &Operation Functions 2) R-Room Temp Shift Table Set Item R-Room Temp Shift Model Common (All Models) Option Item Set Value Fridge LED Fridge LED 1 Option Value 0 0 1 31.1℉(-0.5℃) 2 30.2℉(-1.0℃) 3 29.3℉(-1.5℃) 4 28.4℉(-2.0℃) 5 27.5℉(-2.5℃) 6 26.6℉(-3.0℃) 7 25.7℉(-3.5℃) 8 32.9℉(+0.5℃) 9 33.8℉(+1.0℃) 10 34.7℉(+1.5℃) 11 35.6℉(+2.0℃) 12 36.5℉(+2.5℃) 13 37.4℉(+3.0℃) 14 38.3℉(+3.5℃) 15 39.2℉(+4.
Temp Control &Operation Functions - The following options are only applicable to the models with Ice Maker. The following can not be set to the models without Ice Maker 3) Ice Maker Sensor Temp Shift This is the standard temperature checking if ice in the ice tray is frozen completely. 4) Ice Maker Water Supply Time Control Function It is an option for Water Supply Time and it may be deleted when the time is confirmed at the factory.
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OPERATION PRINCIPLES BY PARTS OF CIRCUIT 12-1) SOURCE POWER CIRCUIT Circuit Power Vcc(DC 5V) MICOM POWER AND SENSORS +12V(DC 12V) RELAY,PANEL DRIVING CIRCUIT 1) When the power is supplied,AC voltage stepped down on the 2nd transformer flows between ①and ③at about AC 16V and changes to DC voltage when it goes through the diode D101 and D108,and constant 12V will be output via regulator REG1(7812).
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 12-3) RESET CIRCUIT Terminal Power Vcc DC 5V Reset DC 5V 1) RESET Circuit allows the whole program to go back to the initial setting by initializing parts such as the RAM in MICOM with the power supply into MICOM or with an instant power failure. Upon the power supply,the reset terminal voltage becomes "LOW" for several tens of ㎲ compared to Vcc voltage(DC 5V)at MICOM,and it maintains "HIGH"(Vcc Voltage)during normal operation. But, when Vcc drops down to 3.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT ITEM DOOR OPEN/CLOSE DOOR S/W CONTACT POINT CLOSE MICOM PIN NO “HIGH” OPEN F # 42 OPEN CLOSE CLOSE OPEN “LOW” “HIGH” R # 43 OPEN MICOM INPUT CLOSE “LOW” 1) If F-Door is opened,the contact point of the door switch (4-1)becomes closed.Then,the power of the PCB line flows to the door switch through R404 and 0V is applied to the MICOM terminal.And, when the door is closed,the contact point of the door switch (4-1)becomes open.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 12-7) ICE MAKER OPERATION CIRCUIT 1) The ice maker circuit above is to control the ice maker kit installed on the F room. This circuit is the hardware to control ejection and horizontal positioning,ice making temperature detection and full icing detection. Temperature detection circuit is the same as temperature detection circuit on 4-6 and the explanation will be skipped and only the ejection circuit will be explained.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 12-8) DISPLAY DRIVING CIRCUIT 1) KEY SCAN &DISPLAY DRIVING PRINCIPLE As shown in the wave diagram below,Micom sends out “high ”signals through the MICOM 6 terminals of NO #1→2→3→4→5→6 for 2ms each every 12ms.This signal goes to output terminal via input terminal of IC51 (TD62783AP or KID65783AP). Here, the peak to peak voltage of the square wave is 11~12V DC and each output wave is as follows.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 12-9) LOAD DRIVING CIRCUIT 1) The main PCB processes most of the load control for electronic refrigerators. 2) Compressor,F-Room,defrost heater,and other functions are controlled by relays. 3) For example,to operate the compressor,MICOM Pin #22 outputs high (5V)signals which go into IC70 Pin #7.The IC70 Pin #7 plays the same role as the base of NPN TR.The Pin #12 works as the collector of TR.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 12-10) Buzzer Circuit Diagram 1) The circuit is composed of like the above and MICOM controls the alarm function with 2KHz.12V is always applied to the circuit.So,when MICOM sends alarm signals to Q801 Transistor Bass,the transistor is turned on applying 12V to the buzzer,which operates the buzzer. 4.7Kohm of R801 is a resistance for the production of quality buzzer sound.
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Diagnostics 13-1) When power is not supplied Pre-Check 1.Check if power is supplied at Concent and Power Cord is connected properly before repair 2.Check by referring to the followings.
Diagnostics 13-2) If there is a trouble with self-diagnosis 1) Ambient Sensor trouble =>(applied to Ambient Sensor Temp type) ERROR INDICATION Start Is Ambient Sensor normal?(At the top right hinge of the refrigerator) NO YES Change Ambient Sensor Is MAIN PCB (CN31) insertion normal? NO YES Is the connection wire between MAIN PCB connector (CN32)and Temp Sensor normal (at the top right of the door)? YES Is the voltage of Ambient Sensor �~� of MAIN PCB Connector (CN31) normal? Refer to Temp detechion
Diagnostics 2) R-Room Temp Sensor trouble ERROR INDICATION Start Is R-Room Temp Sensor normal? NO Change Temp Sensor YES Is the insertion of MAIN PCB connector(CN30) normal? NO Connector contact trouble / re-insertion YES Is both trminal Voltage of MAIN PCB �~� (BLUE-BROWN) normal? Refer to Temp detechion circuit sensor of the circuit explanation. YES Is MICOM Pin#51 input voltage normal? (Identical Voltage �~� of CN30) NO (0.
Diagnostics 4) F-Room Temp Sensor trouble ERROR INDICATION Start Is F-Room Temp Sensor normal? NO Change Temp Sensor YES Is the insertion of MAIN PCB connector(CN80) normal? NO Connector contact trouble /re-insertion YES Is both trminal voltago of MAIN PCB �~� (Yellow-BROWN) normal? NO (0.5V>Measured value) Reconfirm electric wire connect section YES Refer to Temp detection circuit sensor of the circuit explanation.
Diagnostics 13-3) When COMP does not operate Pre-Check “Check out the COMP with the Forced Operation selected” 1. If it does not pass 5 min after a desired Temp reached,COMP does not operate. 2. During Defrost,COMP does not operate. 3. With the disconnected F-Sensor or R-Sensor,COMP does not operate because low temperature is detected. Start Is Forced Operation on? YES Is the MICOM #22 output "HIGH"(5V)? NO Run Forced Operation NO YES Is the IC70 #12 "LOW"(0.
Diagnostics 13-4) When FAN does not operate Note "Check out the F-FAN with the Forced Operation selected" 1. F-Room FAN, R-Room FAN and COMP COOLING FAN remains OFF while COMP is off. (R-FAN can be on with the defrost function.) 2. When Comp is ON,R-FAN does not always remain ON (including Forced Operaation) and when R-Room temp reaches to set temp,R-FAN remains OFF. 3. When R-Room &F-Room are closed after being opened,each FAN starts up with a delay time (5sec ~1min) immediately.
Diagnostics 2) When R-Room FAN(R-FAN)does not operate Start Is it during Forced Operation? NO YES Start Forced Operation Does Fan operate with DOOR S/W presses?(Including Delay Time) YES Normal R-FAN NO Is the R-Room temperature a Fan-On condition? NO YES Is DOOR S/W normal? NO YES Change DOOR S/W Is the voltage of MICOM #43 5V (Close condition)? Freezer Door Switch input #43 Check temp conditions, Select Super Cool NO YES Is insertion of CN71(W/BLUE)of MAIN PCB normal? Check soldering /C
Diagnostics 3) When COMP COOLING FAN does not operate Start Is COMP operating? NO Operate Forced Operation YES Is it COMP COOLING FAN ON condition? NO Stand by for FAN ON condition Confirm FAN operating condition YES Ambient Temp Range Higher than 71.6℉(22℃) Comp Between 62.6℉(17℃)~69.8℉(21℃) Fan Between 53.6℉(12℃)~69.8℉(16℃) DELAY Between 44.6℉(7℃)~51.8℉(11℃) Lower than 42.8℉(6℃) Is MICOM Pin #28 "HIGH"(5V)? NO YES Is IC3 #15 "LOW"(0.
Diagnostics 13-5) When Defrost does not operate Pre-Check 1. With a shorted-out F or R Defrost Sensor,the fridge operates normally excepting Defrost (The fault can be picked up with self-diagnosis,POWER ON/OFF). 2. There will be Heating trouble with a shorted-out Temp FUSE,which contributes to Defrost by natural Temp increase resulting in a Temp Control problem stemmed from the increased COMP OFF time. 3.
Diagnostics A Does the Function return to the normal after Heating ? YES Normal NO Is each concerned Defrost Sensor Temp higher than the terminated Temp? NO Standby until it reaches a certain temperature ,Change concerned Sensor Refer to concerned Sensor resistance (Appendix.Temp Sensing Circuit Table) YES Is the input voltage of MICOM #54 4 higher than the voltage upon the terminated Temp? Refer to concerned Sensor resistance (Appendix.
Diagnostics 13-6) When Alarm Sound continues without stop Note 1. When Door gets open,Door Open alarm ("Ding Dong")goes off in 2 minutes with Door opened.When Door remains open after this,the alarm goes off every minute. 2. When Door Switch is not pressed well,MICOM considers it as opened and alarming sound goes off. Room Lamp becomes OFF in 10 minutes since it detects Door Open.In this case, even though Door gets opened, Room Lamp does not comes ON.
Diagnostics 2) When “Beep Beep” sound continues Note 1. "Beep-Beep"sounds do not go off except Forced Operation &Forced Defrost. 2. It is checkable at Panel PCB when Forced Operation or Forced Defrost is selected,so when error occurs, check it and correct the error.
Diagnostics 2) When PANEL PCB Buttons do not work Start Is Connector of Upper Hinge Cover inserted well? NO YES Is insertion of MAIN PCB Connector (CN50) normal? NO YES Is insertion of PANEL PCB Connector normal? NO YES Is there any of 6 buttons pressed? NO YES YES Is CHILD LOCK BUTTON pressed? Re-insert Connector, Check contacts Re-insert MAIN PCB Connector, Check contacts Re-insert PANEL PCB Connector, Check contacts Re-assemble PANEL PCB COVER Release CHILD LOCK YES Recheck/Change MAIN PCB
Diagnostics Start YES Is DOOR OPEN? NO DOOR OPEN YES Is DOOR SWITCH normal? NO Change DOOR SWITCH YES Is Room LAMP(R,F) normal? NO Change LAMP Is the contact state of connector CN70 & CN71 normal? CN70 � PIN;F LAMP WIRE PINK CN71 � PIN;R LAMP WIRE BLACK Re-check the ccutact of the connector CN70 & CN71 YES Are the voltages of MICOM #42 & #43 for DOOR SWITCH normal? R DOOR SIGNAL MICOM #43 OPEN :0V,CLOSE :5V F DOOR SIGNAL MICOM #42 OPEN :0V,CLOSE :5V FLA MP#24 RLA MP#29 Check connector CN30, so
13-9) When Ice Water Valve does not operate (Option) Pre-Check 1. While disassembling,make sure to cut off water since the ice water valve is directly connected with water. 2. Make sure to avoid the electric shock while disassembling because one end of wire is applied with power. 3. Check the operation of the ice water valve only after the ice maker test switch is pressed.
13-10) When Ice Maker does not operate (Option:Model installed) Pre-Check 1. Water is automatically supplied to the Ice Maker and it dispenses cubed or crushed ice according to its setting. 2. Power is applied to one of its wires.So,be sure to refer to its exploded view when disassembling. 3. To check the operation of the Ice Maker,press the Ice Maker Test S/W.(F-Room Ice Maker) It is not possible to check with the power disengaged.
14 . Illustrated Parts Catalog.
Illustrated Parts Catalog.
Illustrated Parts Catalog.
Illustrated Parts Catalog.
Illustrated Parts Catalog.
Illustrated Parts Catalog.
Illustrated Parts Catalog.
Illustrated Parts Catalog.
SAFETY PRECAUTIONS FOR AS ● Upon electronic Control system repair/change,make sure the set unplugged. � Be ware of electric shock. ● Use rated electronic Control equipment. � Make sure to check out ModeL name,Rated voltage,Rated current,Operation Temp,etc. ● Upon repair,make sure that harnesses are not to be water-penetrated and are bundled tight. � Should not be detached by a certain amount of external force.
15. REFERENCE 15-1) Reference (Measure Load Terminals) * Turn off Power, disassemble Housing connected to MAIN PCB CN70,71 and measure followings LOAD MEASURING TERMINALS PCB MAIN 1) F DEFROST HEATER 2) F DRAIN HEATER CN70 ⑬&⑦ 1)R DEFROST HEATER 2)ICE WATER PIPE HEATER CN71 ⑨&⑦ ICE WATER VALVE CN71 ①&⑤ F FAN MOTOR CN71 ⑪&⑤ R FAN MOTOR CN71 ③&⑤ COMP.
* Turn on Power and check status of Relay &Driving Circuit by checking followings according to load operation .
15-2) Reference (Measure Sensor Terminals) * Check after disassembling connected to MAIN PCB CN30&CN32 * Because it is NTC TYPE Sensor,risistance decreases as temp increases 1. Measure resistance between CN30 ⑦ and ⑥ for R-Sensor. 2. Measure resistance between CN30 ② and ③ for F-Sensor. 3. Measure resistance between CN30 ⑧ and ⑥ for R Defrost Sensor. 4. Measure resistance between CN30 ② and ④ for F Defrost Sensor. 5. Measure resistance between CN31 ① and ④ for Ambient Sensor. 6.
16. PCB DIAGRAM ⑧ ⑫ ⑩ ⑪ ⑥ ② ⑨ ⑤⑦ ③ ④ ① 1. AC is input via Connector CN10 and DC12V,5V and GND are supplied via Regulator. 2. Oscillator generating clocks required for the MICOM program control &Reset circuit initializing programs upon power on/off. 3. EEPROM:It stores data. 4. It receives various sensor signals such as F/R Door S/W On/Off and sends them to MICOM after filtering their noises. 5. PLC (Power Line Communication)Circuit 6. Buzzer Circuit 7. Circuit for model classifying options 8.
F LAMP COMMON LINE(N) COMP HEATER COMMON LINE(N) R HEATER (R DRAIN. ICE WATER PIPE) HEATER COMMON LINE(L) F HEATER (F DRAIN) ①ICE WATER VALVE ③R FAN ⑤COMMON LINE(L) ⑦R LAMP ⑨C FAN ⑪F FAN ① ③ ⑤ ⑦ ⑨ ⑪ ⑬ ① PANEL PCB WIRE ③ PANEL GRID SIGNAL ⑤ KEY ①,② ICE MAKER MOTOR ③ GND ④ ICE EJECT SENSOR ⑤ TEST S/W ⑥ HORIZONTAL S//W ⑦ ICE FULL S//W ⑧ GND ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ F-DOOR S/W GND F-ROOM SENSOR F-DEFROST SENSOR R-DOOR S/W GND R-ROOM SENSOR R-DEFROST SENSOR ①TRANS IN AC ③TRANS IN AC ① AMBIENT SENSOR ④ GND 17.
DOOR SWITCH R DOOR SWITCH F DOOR SWITCH DRIVING PART R ROOM LAMP F ROOM LAMP ICE WATER VALVE R ROOM FAN F ROOM FAN COMPRESSOR COOL FAN AC COMPRESSOR R DEF HEATER + R DRAIN HEATER + ICE WATER PIPE HEATER F DEF HEATER + F DRAIN HEATER DOOR CONTROL DRIVING PART CONTROL POWER CONTROL AC/DC POWER CIRCUIT TRANSFORMER AMBIENT SENSOR SENSOR R DEF SENSOR F DEF SENSOR R ROOM SENSOR BUZZER CIRCUIT MOTOR EJECT ICE MAKER KIT FULL SWITCH HORIZONTAL SWITCH TEST SWITCH EEPROM OSCILLATOR CI
OPTION CIRCUIT DOOR S/W DEFECTION CIRCUIT SENSOR DETECTION CIRCUIT DRIVING PART CONTROL CIRCUIT AC/DC POWER CIRCUIT BUZZER CIRCUIT RESET CIRCUIT OSCILLATOR CIRCUIT EEPROM CONTROL CIRCUIT ICE MAKER CONTROL CIRCUIT DISPLAY CONTROL CIRCUIT 19.
20.
21. Temp to Resistance of Sensor &MICOM PORT Voltage Sensor CHIP:PX41C Standard ℃ -50 -49 -48 -47 -46 -45 -44 -43 -42 -41 -40 -39 -38 -37 -36 -35 -34 -33 -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 ℉ -58 -56.2 -54.4 -52.6 -50.8 -49 -47.2 -45.4 -43.6 -41.8 -40 -38.2 -36.4 -34.6 -32.8 -31 -29.2 -27.4 -25.6 -23.8 -22 -20.2 -18.4 -16.6 -14.8 -13 -11.2 -9.4 -7.6 -5.8 -4 -2.2 -0.4 1.4 3.2 5 6.8 8.6 10.4 12.2 14 15.8 17.6 19.4 21.2 V 4.694 4.677 4.
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