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Samsung RS277ACPN Manual

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SIDE BY SIDE
BASIC : RS277ACPN
Model Name : RS275ACWP RS277ACWP RS275ACBP
2008. 02
SAMSUNG Side by Side Refrigerator
A-TOP-PJT
New product training for refrigerator
RS277ACBP RS275ACPN RS277ACPN
RS275ACRS RS277ACRS
RS277
RS275

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Summary of Contents for Samsung RS277ACPN

  • Page 1 SAMSUNG Side by Side Refrigerator A-TOP-PJT New product training for refrigerator SIDE BY SIDE BASIC : RS277ACPN MODEL NAME : RS275ACWP RS277ACWP RS275ACBP RS277ACBP RS275ACPN RS277ACPN RS275ACRS RS277ACRS RS277 RS275 2008. 02...
  • Page 2 Contents Product information Product information Product function Product function Full disassembly and assembly Full disassembly and assembly Troubleshooting and major adjustme Troubleshooting and major adjustme 5. Circuit Descriptions Reference Information Reference Information...
  • Page 3 1. Product Information 1-1. New feature ITEM BASICE MODEL(A-TOP06) NEW MODEL(A-T0P08) CHANGE RISK FACTOR ASSY COVER - 1 Piece - 2 Piece Window Design - New Design - PLP DISP - High Brightness Led(2ea) - Waterproof CASE - Outer Spray - Stainless Platinum Spray - New Design - Cost...
  • Page 4 1. Product Information 1-1. New feature ITEM BASICE MODEL(A-TOP06) NEW MODEL(A-T0P08) CHANGE RISK FACTOR ASSY–EVAP - Deodorizer - Remove Deodorizer - New Design - Quality - Printing : Deodorizer - Printing is deleted - Cost Cut - Single Body Production ASSY–PACKING - Packing in CUSHION-UPP - Packing in R room DOOR-...
  • Page 5 1. Product Information 1-2. Comparison of functionality vs competitor ITEM SPEC A-TOP06 A-TOP08 Appearance Cooling Tech Twin Cooling Twin Cooling Door Shape Contour Contour Product Zone Coolselect Zone Coolselect Zone Special Room or Chilled Bin or Chilled Bin 159.3 177.8 F-Room 220 ↓...
  • Page 6 1. Product Information 1-3. Parts Name Xtra SpaceTM Door Bin Ice Maker Ice chute Glass Shelf Door Bin for RS275 (Tilt Pocket for RS277) Plastic Drawers Cover Leg Front...
  • Page 7 1. Product Information 1-3. Parts Name Water Filter Dairy Light(Upper) Compartment Gallon Door Bin Spill-proof Glass Shelf Lights (lower) Egg Tray (RS277) Chilled Bin for RS275 (Coolselectzone for RS277) Door Bin Top Lips Plastic Drawers Gallon Door Bins...
  • Page 8 1. Product Information 1-4. Product feature Twin Cooling System Twin Cooling System Multi-Flow System Multi-Flow System Xtra Space Xtra Space Door Alarm Door Alarm CoolSelectZone CoolSelectZone...
  • Page 9 1. Product Information 1-5. Model Specification &Specification Chart Item Specification RS275 RS277 Model Dispenser with Dispenser Coolselect Zone Total 26.5 cu.ft Refrigerator 16.1 cu.ft Capacity Freezer 10.4 cu.ft Net Dimension(W×D×H) 35.9inch x 33.8inch x 70inch Rated Frequency and AC 115V/60Hz Frequency Motor Rated Consumption 160W...
  • Page 10 1. Product Information 1-6. Electric Parts Specification Items Specification Models RS275/RS277 Model MK172D-R2U/E09 Compressor Starting type R.S.C.R Oil Charge FREOL α-10 Freezer SPLIT FIN TYPE Evaporator Refrigerator SPLIT FIN TYPE Condenser Forced and natural convection type Dryer Molecular sieve XH-9 Capillary tube(Dia×Length) 0.033 ”×130 ”...
  • Page 11 1. Product Information 1-6. Electric Parts Specification Items Specification Models RS275/RS277 First Defrost Cycle 4 hr ± 10 min (Concurrent defrost of F and R) Defrost Cycle(FRE) 12~24hr(vary according to the conditions used) Defrost Cycle Defrost Cycle(REF) 6~12hr(vary according to the conditions used) Pause time 10 ±...
  • Page 12 1. Product Information 1-6. Electric Parts Specification Items Specification Models RS275 RS277 Model 115V 60HZ Defrost Heater(FRE) Conducting at F Defrosting AC 120V,250W Defrost Heater(REF) Conducting at R Defrosting AC 120V,140W DISPENSER Heater Interlock with F-FAN AC 115V, 5W WATER PIPE Heater AC 115V,5W WATER TANK- Heater AC 115V,4W...
  • Page 13 1. Product Information 1-6. Electric Parts Specification Items Specification Models RS275 RS277 Rated Voltage AC 115V/60Hz MOTOR-BLDC(FRE) DC12V/DREP3030 LA MOTOR-BLDC(REF) DC12V/DREP3020 LA MOTOR-BLDC (Circuit) DC12V/DRCP3030 LA Lamp(FRE) AC120V/40W(1EA) UPPER AC120V/40W(3EA) Lamp(REF) LOWER AC130V/30W(1EA) Door Switch AC 250V 0.5A Power cord AC125V 15A Earth Screw BSBN (BRASS SCREW)
  • Page 14 1. Product Information 1-7. Dimensions of Refrigerator (inches)
  • Page 15 1. Product Information 1-8. Optional Material Specification Photograph Part Name Part Code FILTER WATER-ASSY ASSY-PACKING DA99-00240N...
  • Page 16 1. Product Information 1-9. Cool cycle Compressor → Sub-condenser → Side Cluster Pipe(FRE) → Side Cluster Pipe(REF) → Hot Pipe → Dryer → Capillary Tube → Refrigerator Evaporator → Freezer Evaporator→ Suction Pipe → Compressor ☜ Double Click...
  • Page 17 1. Product Information 1-10. Cooling Air Circulation Refrigerator Freezer...
  • Page 18 1. Product Information 1-11. Digital panel For RS275 For RS277 FREEZER BUTTON FRIDGE BUTTON To set the freezer temperature, press the button To set the fridge temperature, press the button repeatedly to change the set temperature in sequence repeatedly to change the set temperature in sequence between 34 ℉...
  • Page 19 2. Product function 2-1. Temperature Control Operation 2-1-1. Temperature Control Function When the system power is initially engaged, the default set temperature are -4 ℉ (-20 ℃ ℉ ℃ for the freezer and 38 ) for the set refrigerator, respectively. The numbers shown on the digital display panel stand for the actual compartments temperatures.
  • Page 20 2. Product function 2-1. Temperature Control Operation 2-1-2. Power Freeze and Power Cool Functions  Select the Power Freeze or Power Cool buttons separately.  These buttons are toggled ON and OFF and the indicators as well.  Although you select Power Freeze or Power Cool, the set temperatures in the freezer and refrigerator are not changed.
  • Page 21 2. Product function 2-1. Temperature Control Operation 2-1-2. Power Freeze and Power Cool Functions 3) When you select Power Freeze and Power Cool together Each function works at the same time. The COMP and Freezer Fan run continuously and the Refrigerator Fan runs until -24 ℉...
  • Page 22 2. Product function 2-2. Ice Dispenser and Water Dispenser  Among several ice-maker functions, the ice extraction function is performed by mechanical system. Only the relay control for a cubed-ice dispensing and the SSR control for the ice chute door are performed electronically. 1) Select Cubed/Crushed/Ice-off function 1-1) The Ice Type button selects Cubed/Crushed/Ice-off options in sequence.
  • Page 23 2. Product function 2-3. C-Fan Motor Delay Function of the Machine Compartment  According to the ambient temperature, the condenser fan located in the machine compartment is operated with different modes. Ranges of ambient temp. Operation Condenser-Fan is ON as soon as the Above 66 ℉...
  • Page 24 2. Product function 2-4. COOLSELECT ZONE FUNCTION  To select this function, open the refrigerator door and press the button on the control panel of CoolSelect Zone drawer.  When the CoolSelect Zone function is selected, the damper inside fan ductwork is open. So the refrigerator cooling is performed first, then the damper is closed to control the CoolSelect Zone temperature.
  • Page 25 2. Product function 2-5. WATER FILTER INDICATOR FUNCTION 1) Filter Indicator 1-1)This indicator initially lights in green. The light color will be changed to orange after 5 month operation then to red at the 6th month. The EEPROM in the control board counts a period of time regardless of a power failure.
  • Page 26 2. Product function 2-6. Ice-Maker Function  The Ice-maker is referred to the device with an automatic ice production, storage in the ice bucket and dispensing through the ice chute. 1) Ice-maker parts...
  • Page 27 2. Product function 2-6. Ice-Maker Function 2) Preparation of Ice-maker 2-1) Connect the water line to the water supply valve of refrigerator to supply water. (See how to connect a water supply line in the owner’s manual.) 2-2) Push the bucket back fully so that the guide-ice of ice maker should not touch the back of bucket.
  • Page 28 2. Product function 2-6. Ice-Maker Function 3) Initial Operation function 1-1) Whenever the power is on, the control board checks the ice tray leveling with the leveling switch within 2 seconds. 1-2) If the leveling switch is not off position, the geared motor will turn to the initial position to make the ice tray leveled.
  • Page 29 2. Product function 2-6. Ice-Maker Function 5) Ice production 3-1) After 60 minutes pass from the water supply, the control board will check the temperature. 3-2) If the sensor reads the temperature lower than 1 ℉ (-17 ℃ ) for more than 5 minutes, than the ice production process is completed.
  • Page 30 2. Product function 2-7. Defrosting Function 1) A defrost is determined based on the accumulated compressor on-time. 2) When the power is engaged for the first time, the defrost cycle for the freezer and the refrigerator will begin after 4 hours of the accumulated compressor on-time. 3) A defrost interval depends on the ambient temperature, the number of door openings, and the door open time.
  • Page 31 3. Full disassembly and assembly Be careful not to scratch Part name Work order Remarks Removing the Front leg cover. 1. Open the freezer and refrigerator doors. 2. Take off the front leg cover by turning the three screw counter-clockwise. FREEZER DOOR Removing the Water supply line.
  • Page 32 3. Full disassembly and assembly Be careful not to scratch Part name Work order Remarks Removing the Upper hinge 1. With the door closed, remove the upper Hinge cover(①)using a screwdriver. FREEZER 2. Disconnect the wires(②). DOOR 3. Remove hinge screws(③)and ground screw(④)counter-clockwise and take off the upper hinge(⑤)along the arrow.
  • Page 33 3. Full disassembly and assembly Be careful of injury Part name Work order Remarks Removing the Lower hinge. 1. Remove the door from the lower hinge(①)by carefully lifting the door. FREEZER DOOR 2. Remove the lower hinge from the bracket hinge(②)by lifting the lower hinge in the direction of the arrow.
  • Page 34 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks Removing the Upper hinge. 1. With the door closed,remove the upper hinge cover(①)using a screwdriver. 2. Remove hinge screws(①)and ground screw(②) counter-clockwise and take off the upper hinge(③)along the arrow REFRIGERATOR DOOR...
  • Page 35 3. Full disassembly and assembly Be careful of injury Part name Work order Remarks 1. Remove the screw under the cover 2. Insert a hand on the slot as shown,and unlock the tabs. CONTROL PANEL 3. Disconnect the wire connector in the direction of the arrow.
  • Page 36 3. Full disassembly and assembly Be careful not to scratch Part name Work order Remarks The refrigerator has a door light switch located in the upper right corner for the refrigerator. DOOR LIGHT 1. Use a small flat blade screwdriver to unlock SWITCH the locking tab and pull the switch out until the wire connector is visible.
  • Page 37 3. Full disassembly and assembly Be careful of injury Part name Work order Remarks The water filter is located in the upper right-hand corner of the refrigerator. The water filter filters water for the ice maker and the water dispenser. WATER 1.Turn the water filter 1/2 turn counterclockwise and pull it down.
  • Page 38 3. Full disassembly and assembly Be careful of injury Part name Work order Remarks Remove the lamp cover by unlocking the tabs and pulling out the cover. UPPER DUCTWORK Remove the screws(2) and upper fan ductwork while disconnecting the wire connector. (lamp and thermistor) The evaporator fan is located in the middle rear of the refigerator.
  • Page 39 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks Evaporator is located in the bottom of refrigerator. 1. Take off the ductwork in refrigerator. 2. Disconnect the wire connector. (Heater and Thermistor) 3.
  • Page 40 3. Full disassembly and assembly Be careful not to scratch Part name Work order Remarks The door bins allow storage of perishable items. DOOR BIN IN FREEZER 1. Push the bin up and slide it out. The switch is located in the left-hand portion of the freezer and sends a signal to the processor.
  • Page 41 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks The ice dispenser is located in the upper portion of the freezer. DISPENSER This assembly stores ice made by the icemaker and dispenses ice. &...
  • Page 42 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks The freezer light is located in the bottom of the auger motor case. The light is covered FREEZER by an opaque cover. LIGHT 1.
  • Page 43 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks The evaporator fan is located in the lower rear of freezer. This fan circulates cold air in the EVAPORATOR FAN freezer. MOTOR 1.
  • Page 44 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks The freezer thermistor is located at the top left of FREEZER freezer vent. It sends temperature signals to the THERMISTOR micro-processor. The Ice-Maker thermistor is located in its bottom. ICEMAKER The temperature signal sends the THERMISTOR...
  • Page 45 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks The ambient thermistor is located inside the upper hinge cover. AMBIENT Fre. it sends temperature signals to the micro- THERMISTOR processor. Ambient Thermistor 1.
  • Page 46 3. Full disassembly and assembly When disassembling, make sure the unit turned off Part name Work order Remarks 5. Turning the two screws counter-clockwise. FAN MOTOR 6. Remove the motor. Insert the flat-tip screwdriver into the fan, and removing the cover relay along the arrow. PROTECTOR O/L, Remove the OLP or PTC along the arrow.
  • Page 47 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-1. If power is not ON ☜ Double Click...
  • Page 48 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-2. If the compressor and cooling fan motor don’t work normally ☜ Double Click...
  • Page 49 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-3. If defrost function don’t work normally ☜ Double Click...
  • Page 50 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-4. If there is a trouble with self-diagnosis ☜ Double Click...
  • Page 51 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-5. If alarm sound ☜ Double Click...
  • Page 52 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-6. If the panel PCB is not working normally ☜ Double Click...
  • Page 53 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-7. If fan doesn’t work ☜ Double Click...
  • Page 54 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-8. If Cool Select Zone isn’t operated normally ☜ Double Click...
  • Page 55 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-9. If the lamps of freezer / refrigerator fail in lighting ☜ Double Click...
  • Page 56 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-10. If the ice chute cover solenoid doesn’t work ☜ Double Click...
  • Page 57 Troubleshooting and major adjustment 4-1. Troubleshooting 4-1-11. If Crushed Ice/Cubed Ice doesn’t work properly ☜ Double Click...
  • Page 58 Troubleshooting and major adjustment 4-2. Forced Operation Function (Pull-down / Refrigerator Defrost / Refrigerator . Freezer-Defrost / Cancellation)  This function enables a pull-down mode, a defrost mode for the refrigerator only, a defrost mode for the freezer and the refrigerator at the same time, and a cancellation of this function. ...
  • Page 59 Troubleshooting and major adjustment 4-2. Forced Operation Function (Pull-down / Refrigerator Defrost / Refrigerator . Freezer-Defrost / Cancellation) 1) Pull-down 1-1) At the ready mode, press any button once then the buzzer will beep (ON for 1/2 second and OFF for 1/2 second) until this mode is cancelled. 1-2) At this pull-down mode, the compressor will start immediately (No 5 minute delay) and if the system is in the defrost cycle, it will be cancelled right away.
  • Page 60 Troubleshooting and major adjustment 4-3. Sound function 1) Sound function 1-1) To make sure a command input, whenever a button is pressed, a “Beep” sounds. 1-2) When two or more buttons are pressed simultaneously or if a wrong button is pressed, there is no sound.
  • Page 61 Troubleshooting and major adjustment 4-5. Self-Diagnostics Function 1) Self-Diagnostics in the initial Power ON 1-1)The control board performs a self diagnostics test within 1 second and check out the temperature sensors abilities. 1-2) If a sensor failure occurs, a corresponding LED segment will blink with a beep. 1-3) When a LED segment blinks, only the cancellation function (Press Power Freeze and Power Cool buttons simultaneously for 8 seconds) is acceptable.
  • Page 62 Troubleshooting and major adjustment 4-5. Self-Diagnostics Function  Press both buttons simultaneously for 8 seconds  Self-diagnostics check list Error ICE MAKER SENSOR ① REFRIGERATOR SENSOR ② REFRIGERATOR DEFROST ③ SENSOR REFRIGERATOR FAN ERROR ④ ICE MAKER function error ⑤ CoolSelect ZoneTM SENSOR ⑥...
  • Page 63 Troubleshooting and major adjustment 4-5. Self-Diagnostics Function  Error items of self-diagnostics Error items LED Display Details Remarks Ice Maker sensor connector missing; ICE MAKER contact failure, electric wire cut, short- SENSOR circuit; Ice Maker sensor failure; and so on Refrigerator sensor connector missing;...
  • Page 64 Troubleshooting and major adjustment 4-5. Self-Diagnostics Function  Error items of self-diagnostics Error items LED Display Details Remarks Read the resistance between the brown and the orange wire terminals(the reading REFRIGERATOR In the refrigerator room, if frost removal varies according to the basic Power mode is finished due to limited time of 80 DEFROST Consumption.
  • Page 65 Troubleshooting and major adjustment 4-6. Load Operation Check Function  Table of Load Mode Check List 1) In the normal operation, press Power Freeze and Power Cool buttons simultaneously for 6 seconds, then the display Contents panel will blink for 2 seconds. ①...
  • Page 66 Troubleshooting and major adjustment 4-7. Set Point Shift Function  Press Freezer Temp. and Power Cool buttons simultaneously for 12 seconds to get into this mode.  In this mode, only the display LED for temperature will be ON.  Press both buttons simultaneously for 12 seconds 1) Initially, all products set the code, “0”...
  • Page 67 Troubleshooting and major adjustment 4-8. Table of Set Point Shift Function  Shift the freezer temperature sensor Reference Value Code Temp. shift Code Temp. shift Example 1) If you are lowering the ℉ ℃ +1 (+0.5 current temperature of the ℉...
  • Page 68 Troubleshooting and major adjustment 4-8. Table of Set Point Shift Function  Shift the refrigerator temperature sensor Reference Value Code Temp. shift Code Temp. shift Example 1) If you are raising the current +1 (+0.5 ℉ ℃ temperature of the refrigerator -1 (-0.5 ℉...
  • Page 69 Troubleshooting and major adjustment 4-9. Option table  Adjust the time to supply water for the ice maker Reference Value Volume to supply Code  Shift the Ice maker temperature sensor water Reference Value 85 cc 95 cc CoolSelect Zone Code temperature sensor...
  • Page 70 5. Circuit Descriptions 5-1. Block diagram ☜ Double Click...
  • Page 71 5. Circuit Descriptions 5-2. SCHEMATIC DIAGRAM ☜ Double Click...
  • Page 72 5. Circuit Descriptions 5-3. WIRING DIAGRAM ☜ Double Click...
  • Page 73 5. Circuit Descriptions 5-4. PART ARRANGEMENT (Main Board) 1. AC power on the PCB power part (SMPS)is supplied and converted to DC12V, 5V and GND through SMPS circuits. 2. Power is supplied to the fan motor driving part up to 8.3V ~10V depending on the type of motor.
  • Page 74 5. Circuit Descriptions 5-5. CONNECTOR ARRANGEMENT (Main Board) ☜ Double Click...
  • Page 75 5. Circuit Descriptions 5-6. Source Power Circuit This circuit shows SMPS(Switch Mode Power Supply) which converts AC input voltage (115V 50Hz, 127V 60Hz, 220V 50~60Hz, 230V 50Hz) to a high DC voltage. The input AC source power is converted to DC through a wave rectifier (BD1) and the converted DC power will generate a constant waveform on the switching transformer using a high speed (100KHz) switching motion of TOP223Y.
  • Page 76 5. Circuit Descriptions 5-7. Oscillator Circuit This is oscillator circuit to generate synchronous clocks used to calculate the time for the microprocessor operation. Note If the specification of resonator changes, micro-processor can not work properly. 5-8. Reset Circuit The reset circuit is to initialize the values RAM ＆ other sectors of micro-processor. When the power is engaged initially, the reset voltage becomes “Low,”...
  • Page 77 5. Circuit Descriptions 5-9. Door S/W Sensing Circuit 1) The terminals, ② and ⑥ of the connector (CN30) are grounded, and DC5V (Vcc) is supplied to the terminals, ⑤ and ⑥ through the resistors, R404 and R403 for the freezer and the refrigerator door, respectively.
  • Page 78 5. Circuit Descriptions 5-10. Temperature Sensing Circuit 1) A thermistor with a negative temperature coefficient (NTC) is used for a temperature sensor. 2) Resistors, R 306 ∼ R310 and capacitors, C 301 ∼ C 305 are used for a noise protection purpose.
  • Page 79 5. Circuit Descriptions 5-11. Key Scan and Display Circuit 1) Key Scan and display operation. The model uses a decorder IC which 4 inputs and 9 outputs. If the IC 9 decorder (TC4028BP) received signals from MICOM pins (3 6), an output signal per 2 miliseconds ∼...
  • Page 80 5. Circuit Descriptions 5-11. Key Scan and Display Circuit The step signals of DC 11 ∼ 12V will be generated periodically. If a sink signal outputs from IC4, DC 11-12V will be applied to the LED input terminal and sink the LED output terminal to 0V.
  • Page 81 5. Circuit Descriptions 5-12. CoolSelect Zone Panel Circuit 1) CoolSelect Zone display panel and temperature sensor 1-1) CoolSelect Zone is referred to as a storage drawer to implement features of Quick cool, Thaw, and Select(Soft Freeze, Chill, and Cool). 1-2) CoolSelect Zone has an additional display panel. Panel LEDs are off white the doors are closed.
  • Page 82 5. Circuit Descriptions 5-12. CoolSelect Zone Panel Circuit 2) Damper drive circuit 2-1) CoolSelet Zone Drawer is controlled by a damper to supply or block cold air. For Quick Cool, the damper will be close. So cold air is supplied only to CoolSelect Zone Drawer.
  • Page 83 5. Circuit Descriptions 5-13. Fan Motor (BLDC) Drive Circuit 1) Motor drive circuit 1-1) This refrigerator adopts a BLDC motor produces energy consumption, Motors of the freezer, refrigerator and the machine compartment are composed of the BLDC. For RS2534, R-fan is operated by AC 115~230V Motor. 1-2) Voltages between high-speed and low-speed...
  • Page 84 5. Circuit Descriptions 5-13. Fan Motor (BLDC) Drive Circuit Voltage of motor Remark Measure b Measure C Measure d In the normal operation, MICOM (F-FAN) (R-FAN) (C-FAN) No. 40, 41 and 42 applies a constant frequency; and High 11.1V MICOM defects the signal to check the failure of motor.
  • Page 85 5. Circuit Descriptions 5-14. EEPROM Circuit EEPROM is semiconductor memory not to be erased. It can be used in the area of unstable electric power. 5-15. Option Circuit There are a variety of models that have a different function. A different model can set up to use option circuit as shown.
  • Page 86 5. Circuit Descriptions 5-16. Load Drive Circuit 1) The control of load in the system is accomplished by the main PCB. 2) Most of relays or SSRs can control compressor, refrigerator/freezer defrost heater, and several option functions. 3) For compressor, #18 pin of micro processor signals High (5V). This signal inputs #5 pin of IC3 and #14 of output terminal which have base and collector functions of IC3 turns on and connects the GND.
  • Page 87 5. Circuit Descriptions 5-17. Load Drive Circuit ☜ Double Click...
  • Page 88 6. Reference Information 6-1. Q&A Problem Possible Causes What To Do 1. Disconnected power plug 1.Check that the power plug is 2.Is the temperature control on the display panel set The refrigerator does properly connected. to the correct temperature? not work sufficiently 2.Try setting it to a lower temperature.
  • Page 89 6. Reference Information 6-1. Q&A Problem Possible Causes What To Do You can hear water 1. The bubbling comes from the refrigerant 1. Normal state bubbling in the circulating in the refrigerator and is normal. refrigerator There is a bad smell in 1.
  • Page 90 6. Reference Information 6-1. Q&A Problem Possible Causes What To Do 1. Turn on icemaker or water supply. 2. Remove cubes and move the feeler arm to the ON position. 1.Icemaker turned off or water supply turned off. 3-1. Break up with fingertip pressure Cube dispenser does and discard remaining clumps.
  • Page 91 6. Reference Information 6-1. Q&A Problem Possible Causes What To Do Water spurting from 1.Run water from the dispenser for 3 minutes (about one and a half 1.Newly-installed filter cartridge. dispenser (on some gallons). 2.Water in reservoir is frozen. models) Water is not 2.Call for service.
  • Page 92 6. Reference Information 6-2. Model name (nomenclature)
  • Page 93 Thank you The End...

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