SAMSUNG Side by Side Refrigerator ADPJT New product
SAMSUNG Side by Side Refrigerator AD-PJT New product training for refrigerator SIDE BY SIDE BASIC : RS 2530 BSH RS 2530 BWW RS 2530 BSH 2006. 08
Contents 1. Product Information 2. Product Function 3. Full Disassembly and Assembly 4. Troubleshooting and Major Adjustment 5. Circuit Descriptions 6. Reference Information 2
1. Product Information 1 -1. New feature NO ITEM BASIC MODEL(AD) NEW MODEL(’ 07 AD) CHANGE 1 - DOOR PLATE - Flat door plate - Contour door plate (Round type) - New Design 2 - HANDLE - Long Bar Handle (plastic) - Al oval half bar - New Design 3 - DISPLAY - LED Type - New Design 3
1. Product Information 1 -1. New feature NO ITEM BASIC MODEL(AD) NEW MODEL(’ 07 AD) CHANGE 4 - CASE DISPENSER - Detachable type (AD-PJT type) - New design - New Design - Cost Cut Production efficiency improved 5 - COVER DISPENSER - Projecting control type - Flat control type - New Design - Hidden type - New Design 6 - COVER HINGE - Exposed type 4
1. Product Information 1 -1. New feature BASIC MODEL(AD) NO ITEM 7 - LIGHTING 8 - Freezer - BASKET Type : Wire Basket Compartment Basket - Compartment Lighting Freezer : 30 W 1 EA Fridge : 30 W 1 EA NEW MODEL(’ 07 AD) CHANGE - Compartment Lighting Freezer : 40 W 1 EA Fridge : 40 W 1 EA - New Design - Illumination Improvement - BASKET Type : Plastic Box - New Design 5
1. Product Information 1 -2. Comparison of Design Change ITEM BASIC MODEL(RS 2630**) NEW MODEL(RS 2530 B**) Appearance Design Feature Ø Dispenser & Display Design : Projecting control type Ø Compartment Lighting : 30 W Ø Handle Design : A-Top Long-Bar (plastic) Ø Freezer Compartment Basket Type : Wire Basket Ø Flat door plate Ø Cover Hinge Type : Exposed type Ø New Design Dispenser (Display) : Flat control type Ø Compartment Lighting : 40 W Ø New Handle Design : Al oval half bar Ø Freezer Compartment Basket Type : Plastic Box Ø Contour door plate Ø Cover Hinge Type : Hidden type 6
1. Product Information 1 -3. Parts Name Ice Maker Xtra Space. TM Ice chute Light Handle Wire Shelf Guard Drawer Cover Leg Front 7
1. Product Information 1 -3. Parts Name Light Dairy Compartment Deli Bin Spill-proof Glass Shelf Vegetable & Fruit Drawer Gallon Door Bins 8
1. Product Information 1 -4. Product Feature ● A newly developed SAMSUNG side by side refrigerator in 2006 has the following characteristics. Twin X Air. Flow ·Cool air circulates through side vents on every shelf level. This provides even distribution of cooling inside cabinets to keep your food fresh longer. Xtra Space. TM ·Vertical room next to the ice maker in the freezer provides space for pizza etc. Door Alarm ·Beep sound reminds you the door is open. Vegetable Crisper ·Optimized humidity control keeps vegetables & fruits fresh. 9
1. Product Information 1 -5. Sales Point & Product Positioning Item GE Profile Whirlpool Trio A-Top AD ‘ 07 Real Stainless Mist Stainless Mist Appearance Design Product zone Convertible function Specific Storage by foods Cooling Method § Refrigeration/ Freezing § Dispenser § Custom Cool § Refrigeration /Freezing § Dispenser § Meat Keeper 1 Box within refrigerator Compartment - 23/30. 2/42. 8℉ - - 23/30. 2/35. 6℉ - -Meats&Fishes -Vegetables/Fruits -Citrus(Fruits) -Meat -Produce (Vegetable) Two Evaporator - - Mono § Refrigeration/ Freezing § Dispenser § Cool Select Two Evaporator § Refrigeration/ Freezing § Dispenser Mono 10
1. Product Information 1 -6. Model Specification &Comparison Chart Item Specification RS 2530 B** Model Dispenser without beverage station Total 24. 8 Cu. Ft Fridge 15. 5 Cu. Ft Freezer 9. 3 Cu. Ft Net Capacity Net dimension(W×D×H) 35. 9" × 34. 8" × 70" Rated Voltage and Frequency 115 V/60㎐ Rated Input 3. 9 A Electric Heater Rated Power Consumption 310 W Refrigerator Type Indirect Cooling Method Refrigerator Refrigerant R-134 a Refrigerant Input Amount 175 g(6. 17 oz) Product Weight before packing : 291(lb) after packing : 326(lb) 11
1. Product Information 1 -7. Electric Parts Specification Items Specification Models RS 2530 B** Components for Freezer Compressor Evaporator Room Temperature Sensor Components Starting type R. S. C. R Oil Charge FREOL α- 10 (ESTER) Freezer SPLIT FIN TYPE Forced and natural convection type Dryer Molecular sieve XH-9 Capillary tube 0. 85× 3300 mm Refrigerant R-134 a THERMISTOR (F-SENSOR) 502 AT Model Refrigerator MK 183 CL 2 U/E 07 Condenser Model Freezer Model THERMISTOR (R-SENSOR) 502 AT Temperature Selection ON(℉) OFF(℉) COLD 24℃ 22. 5℃ 25. 5℃ NORMAL 20℃ 18. 5℃ 21. 5℃ WARM 14℃ 12. 5℃ 15. 5℃ Temperature Selection ON(℉) OFF(℉) COLD 1℃ -0. 5℃ 2. 5℃ NORMAL 3℃ 1. 5℃ 4. 5℃ WARM 7℃ 5. 5℃ 8. 5℃ 12
1. Product Information 1 -7. Electric Parts Specification Items Specification Models RS 2530 B** First Defrost Cycle (Concurrent defrost of F and R) 4 hr ± 10 min Defrost Cycle(REF) 17 hr (varies according to conditions of used) Pause time 7 ± 1 min Defrost Related Components Defrost Cycle F Defrost- Model THERMISTOR (502 AT) Sensor SPEC 5. 0㏀ at 25℃ Operating temperature 60℃ OFF / 40℃ ON(140℉ OFF / 104℉ ON) Defrost Cycle Bimetal 13
1. Product Information 1 -7. Electric Parts Specification Items Specification Models Dispenser Defrost-Heater(FRE) Conducting F Defrosting 115 V/300 W DISPENSER Heater Interlock with F-FAN 115 V/5 W WATER PIPE Heater - 115 V/5 W 60℃ OFF / 40℃ ON (140℉ OFF / 104℉ ON) Bimetal Running 250 VAC-12μF Starting - Model J 531 Q 32 E 4 R 7 M 18 Operation 4. 7Ω± 20% Model Temp. ON Temp. OFF 4 TM 445 PHBZZ-53 125℃± 5 69℃± 5 Electric Components Condenser for COMP(Package type) Starting-Relay Over-load Relay 115 V/60 Hz Rated Voltage MOTOR-AC (FAN) IS-27210 SND 6 A MOTOR-DAMPER DC 12 V MOTOR-AC(Circuit) IS-27210 SCD 6 A Lamp(FRE) AC 125 V 40 W × 1, A 15 Lamp(REF) AC 125 V 40 W × 1, A 15 Door Switch AC 125 V 1. 5 A × 2 Power cord AC 125 15 A Ground Screw BSBN (BRASS SCREW) 14
1. Product Information 1 -8. Dimensions (inch) 15
1. Product Information 1 -9. Optional Material Specification Photograph Part Name Part Code FILTER WATER-ASSY DA 29 -00003 A ASSY-INSTALL FILTER DA 97 -01469 D INCANDENT LAMP 4713 -001206 Remarks Refrigerator: 1 pcs Freezer: 1 pcs 120 V/40 W 16
1. Product Information 1 -10. Cool cycle Compressor →Condenser → Hot Pipe → Dryer → Capillary Tube → Evaporator → Suction Pipe → Compressor 17
1. Product Information 1 -11. Cooling Air Circulation Freezer Fridge 18
1. Product Information 1 -12. Digital panel ICE TYPE BUTTON CHILD LOCK BUTTON POWER FREEZE BUTTON FRIDGE TEMP. BUTTON Use this button to choose Cubed or Crushed ice or Ice off. Speeds up the freezing process in the freezer. FREEZER TEMP. BUTTON To set the freezer temperature, press the button repeatedly to change the set temperature in sequence between cold and coldest. When this button is pressed for 3 sec. , all functions are locked and can not be modified. The water and ice dispenser are locked. To set the fridge temperature, press the button repeatedly to change the set temperature in sequence between cool and coolest. FILTER RESET BUTTON When the water filter is replaced, reset the indicator by pressing the button for 3 seconds. 19
2. Product Function 2 -1. Temp Control 1. Freezer Temp Setting 1 -1) With the initial power on, Freezer will be set at MID (-4°F/-20°C) and Refrigerator will be set at MID (37°F/3°C) automatically. At this time, the number of LEDs (1 ~ 5) lighting up on the display panel means intensity (MIN ~ MAX) of room control temperature (6. 8 ~ -13°F/-14 ~ -25 °C) and as the intensity gets increased, the number of LEDs increases and the set temperature become lowered. 1 -2) Freezer Temp can be set from (6. 8°F/-14°C)(MIN) to (-13°F/-25°C)(MAX) with Freezer temp setting button. 2. Refrigerator Temp Setting 2 -1) Refrigerator Temp can be set from (44. 6°F/7°C)(MIN) to (33. 8°F/1°C)(MAX) with Refrigerator temp setting button. 2 -2) Refrigerator set temp varies slightly from actual temperature according to the user’s way of storing food and peripheral temp. (If food is stored too close to Refrigerator Temp Sensor, it can block air circulation resulting in weak or over cooling. So, be careful not to block it. ) Note When power is out due to an instant power failure or the problems in an electric circuit and restored again, the ref checks Refrigerator Temp. At this time, When Freezer Temp is lower than (41°F/5°C) , Refrigerator considers it as an instant power failure and restores the previous temp and functions stored in EEPROMforuse. 20
2. Product Function 2 -1. Temp Control 3. POWER FREEZING v It is selected with Power Freeze Button. v Each time you press Power Freeze Button, it repeats SELECT ↔ CANCEL (Relevant ICON ON/OFF). v When Power Freeze is selected, the temp settings of Refrigerator/Freezer does not change. v When Power Freeze is selected, it is possible to change the temp settings of Refrigerator/Freezer. 1) POWER FREEZING 1 -1) When Power Freeze is selected by pressing Power Freeze Button, ICON gets on immediately but Power Freeze starts its operation in 10 sec. However, when Power Freeze Button is reselected during Power Freeze, ICON gets off and operation ends with the selection of Power Freezing. 1 -2) When Power Freeze is selected, Comp & Freezer-Fan operates continuously for 2 hr. and 30 min. 1 -3) During Power Freeze, Refrigerator continues its previous operation. 1 -4) After turning off of Power Freeze, Power Freeze lamp goes off automatically and Freezer operates according to the set temp. 1 -5) When it becomes conditions for Defrost during Power Freeze, Defrost gets delayed and it starts operating upon completion of Power Freeze. When Power Freeze is selected during Defrost, Power Freeze ICON lights up immediately. But, Comp and Freezer-Fan gets on upon completion of Defrost. (But, the initial 4 hr. Defrost comes before Power Freeze) 21
2. Product Function 2 -2. Ice Dispenser and Water Dispenser 1) CUBE/CRUSHED/ICE OFF SELECTION 1 -1)Upon the initial Power On, when F-Room Temp is above (41°F/5°C), CUBE LED on the Display lights up and the other LEDs remains OFF. But, when F-Room Temp is lower than (41°F/5°C), it restores the ice selection before the POWER OFF and displays it on the panel. 1 -2)It is selected in the order of CUBE → CRUSHED → ICE OFF repeatedly by ICE TYPE key. 1 -3)When operating Ice Dispenser Lever with CUBE or ICE OFF selected, it sends out ice cubes. 1 -4)When pressing Ice Dispenser Lever with CRUSHED selected, it sends out crushed ice. 1 -5)When ICE OFF is selected, ICE-MAKER does not make ice. Note When taking out ice with ICE OFF selected, only ice lefted in the storing box is extracted. 2) FILTER RESET 2 -1)When FILTER INDICATOR LED on the front Panel becomes orange or red, Filter should be changed. 2 -2) - When FILTER RESET button is pressed for a certain period (3 sec) after changing Filter, FILTER INDICATOR LED becomes green with “ Ding Dong ” sound. (When FILTER RESET is pressed, water count is reset to 0) - When the filter is replaced, reset the indicator by pressing the FILTER RESET button for 3 second at the same time. 22
2. Product Function 2 -2. Ice Dispenser and Water Dispenser 2 -3) After Filter reset, when 270 Gallon water is used (including water used in making ice), FILTER INDICATOR LED becomes orange , and when 300 Gallon water is used, FILTER INDICATOR LED becomes red. 2 -4) When the water filter is not needed due to the use of purified water or other reasons, the Filter Indicator can be turned off. When pressing the Filter Reset Button for 5 seconds continuously, the Filter Indicator will be off with a "Ding Dong" sound. (At this time, when 3 sec has passed, the filter will be reset with a "Ding Dong" sound and when 5 sec has passed, the Filter Indicator will be off. ) 2 -5) When the Freezer temperature is higher than 41 °F upon the initial power on, the Filter Indicator will be turned on. And, when it is lower than 41 °F, it will display the previous setting (before the power off). 23
2. Product Function 2 -3. Fan Motor Delay (Compressor Room) v Among the functions depending on Peripheral Temp, Comp Cooling Fan (Comp Room Fan) is controlled according to Peripheral Temp as follows. Therefore, make sure to check the contents to refer to during A/S because Cooling Fan can operate or not according to conditions during Comp operation. Comp Room DELAY Ranges of ambient temp. Operation Above (64. 4°F/18°C) With COMP. ON, Comp Room Fan will be on immediately Between (55. 4°F/13°C) and (62. 6°F/17°C) After 5 min. from COMP. ON, Comp Room Fan will be on Below (53. 6°F/12°C) Regardless of COMP. , Comp Room Fan will be off 24
2. Product Function 2 -4. Ice-Maker Function 1) Initialization (Restoration to the initial horizontal status) When the Ice Maker is initialized by Power On or the Ice Error Mode, the Ice Tray gets leveled again by rotating the Eject Motor regardless of the horizontal state of the Ice Tray. 1 -1) Initializing Movement Timing Chart 2) Water Supply v. It is the movement to supply water on the ICE-TRAY by using the SOLENOID VALVE after the completion of the ejection (Ejection after the completion of the normal ice making or that by the test movement) Considering cases with low hydraulic pressure, when it is recognized as No Water Supply, the Water Supply will be attempted for 4 times. Number of water supply Detection of Water Supply Detection of No Water Supply Lower than (62. 6°F/17°C) Higher than (64. 4°F/18°C) 1 65 (58+7) min 58 min 110 min 95 min 2~4 58 min 70 min 25
2. Product Function 2 -4. Ice-Maker Function Assumption of the ambient temp of higher than 64. 4 °F/ 18 °C 26
2. Product Function 2 -4. Ice-Maker Function 3) Ice Making v It is until the water in the ICE-TRAY after the completion of Water Supply gets frozen completely and the ice making movement is completed by the temp of the ice making temp pickup part using the ice maker sensor (THERMISTOR). 3 -1) After water is supplied to the ICE-TRAY, check the temp pickup part of the ice maker sensor after the Ejection Stand-By Time for 58(58~110) min. (For the No Water Supply, 90 min) and judge whether the temp of the ice maker sensor is below (1. 4°F/-17°C). 3 -2) If the ice maker sensor maintains the temp below (1. 4°F/-17°C) for 5 min. It is judged that ice making is completed. However, do not check the ice maker sensor within the Ejection Stand -By Time from the point of Water Supply. (Protection function when the sensor is faulty or the cold air leaks. ) 3 -3) Stand-by for 1 CYCLE: After the completion of the initialization by POWER ON, it stands by for 1 CYCLE (2 hr. ) and operates the Ejection although the temp condition of the ice maker sensor is satisfied. 3 -4) As long as the temp of the temp sensing part maintains below (1. 4°F/-17°C) for more than 5 min, the Ejection will be carried out. If the temp fluctuates below (1. 4°F/-17°C) above (1. 4°F/17°C), the Ejection will be carried out after 5 min. at the temp below (1. 4°F/-17°C) while counting the Stand-by Time entering the temp below (1. 4°F/-17°C). 27
2. Product Function 2 -4. Ice-Maker Function 4) Ice Ejection v It is the movement to separate the ice cubes from the ICE-TRAY after the completion of ice making, which is conducted by the following steps. Check the changes in status and time for the horizontal S/W (if it is used) and the ice level check S/W in parallel and then operate Ejection. At this point, the regular rotational direction of the motors is clockwise (CW) and the reverse rotational direction of that is counter clockwise (CCW). The Ice Ejection is carried out twice, which is to separate all the ice cubes from the ICE-TRAY. Ejection Movement TIMING CHART 28
2. Product Function 2 -4. Ice-Maker Function 5) Ice Test It is necessary for the forced operation for the purpose of the operation test, A/S, and cleaning, and when pressing the ICE TEST S/W for a certain time period (more than 1. 5 sec. ), it goes into operation. 5 -1) The TEST button will not be selected during the Water Supply or the Ejection. Press it again with the Water Supply or the Ejection completed to run the Test function. Standby for maximum 5 min. when Water Supply operates. 5 -2) When the TEST button is selected, the ejection will be carried out by running the eject motor regardless of the elapsed time (58~110 min. ) after the Water Supply and the temp of the ice making. And after this, the tray will be reverted to the horizontal level and the ICE TRAY will be supplied with water. 5 -3) It operates normally regardless of the Freezer/Refrigerator DOOR OPEN (No temporary pause functions by the DOOR OPEN) 5 -4) Other functions are the same as the movements of the Ejection and the Water Supply. 5 -5) When ERROR occurs more than 3 times with the normal function and the ice making stops, the ICE TEST shall operate. At this point, if the normal Ejection and Water Supply are operated by the TEST S/W, there would be “Ding Dong” sound for once before the Water Supply and the third ERROR MODE will be cancelled executing the normal ice making. 29
3. Full Disassembly and Assembly Part Name Work Order Remarks Removing the Front Leg Cover Unscrew three phillips screws from the front leg cover. Pull the front leg-cover down with both hands and remove it by lifting it up with the upper rib. Then, disengage the lower hooks. Be careful not to scratch Removing the Refrigerator Doors Separating the Water Supply Line from the Refrigerator Remove the water tube by pressing the coupler (➁) and pulling the water tube (➀) away. NOTE Be careful not to cut the water tube when separating it from the coupler. • Lift the door straight up. • Be careful not to pinch the water tubing and wire harness on the door. • Place doors on a protected surface. Be careful of injury ① ② 30
3. Full Disassembly and Assembly Part Name Work order Remarks ③ Removing the Freezer Door 1) With the door closed, remove the upper hinge cover (➀) along the arrow (➂) using a screwdriver, and then disconnect the wires (➁). ② ① -Be careful not to scratch -When diassembling, make sure the unit turned off. Removing the Refrigerator Doors 2) Remove hinge screws (➃) and ground screw (➄) counter-clockwise, and take off the upper hinge (➅) along the arrow (➆). Take care when removing the door to ensure that it does not fall on you. ⑤ ④ When diassembling, make sure the unit turned off 3) Remove the door from the lower hinge (➇) by carefully lifting the door (➈). NOTE Be careful not to pinch the water tubing and the wire harness at the bottom of the door. ⑥ ⑦ ⑨ ⑧ Be careful not to scratch 31
3. Full Disassembly and Assembly Part Name Work order Removing the Refrigerator Door 1) With the door closed, remove the upper hinge cover (➀) along the arrow (➁) using a screwdriver. Remarks ① ② Be careful not to scratch 2) Remove hinge screws (➂), and ground screw(➃) counter-clockwise, and take off the upper hinge (➄) in the direction of the arrow (➅). Take care when removing the door to ensure that it does not fall on you. Removing the Refrigerator Doors When diassembling, make sure the unit turned off ④ ⑤ ③ ⑥ ⑧ 3) Remove the door from the lower hinge (➆) by lifting the door (➇). Be careful not to scratch 4) Remove the lower hinge(➆) from the bracket(➈) by lifting the lower hinge(➆) in the direction of the arrow. When diassembling, make sure the unit turned off ⑦ ⑦ ⑨ 32
3. Full Disassembly and Assembly Part Name Work order Remarks Reattaching the Freezer Door ① 1) Reattach the freezer door by inserting the hose (➀) in the lower side of the door into the hole in the lower hinge (➁) and pull the hose down. ② Be careful not to scratch ⑥ 2) Insert the upper hinge shaft (➂) into the hole (➃). After leveling between the upper hinge hole and the hole of the cabinet, reattach hinge screws (➄) and ground screw (➅) in a clockwise direction. Reattaching the Refrigerator Doors ⑤ When diassembling, make sure the unit turned off ③ ④ 3) Connect the wires. When diassembling, make sure the unit turned off ⑦ 4) Put the front part of the upper hinge cover (➆) on the front part of the upper hinge (➇) and reattach from the front part of the upper hinge cover first. Be careful not to scratch ⑧ 33
3. Full Disassembly and Assembly Part Name Work order Remarks Reattaching the Refrigerator Door ① 1) Insert the lower hinge (➀) in the bracket lower hinge (➁). Be careful not to scratch ② ③ 2) Place the hole in the refrigerator door (➂) over the lower hinge (➃). Reattaching the Refrigerator Doors Be careful not to scratch ④ 3) Insert the upper hinge shaft (➄) into the hole (➅). After leveling between the upper hinge hole and the cabinet hole. Reattach hinge screws (➆) and gound screw (➇) in the clockwise direction. ⑦ ⑤ When diassembling, make sure the unit turned off 4) Put the front part of the upper hinge cover (➈) on the front part of the upper hinge (⑩) and reattach it from the front part of the upper hinge cover first. ⑧ ⑥ ⑨ ⑩ Be careful not to scratch 34
3. Full Disassembly and Assembly Part Name Work Order Remarks Door Handle Disassembly The door handles allow access into the refrigerator and freezer. They are front mounted with screws. Lift the handle upward motion with on. Be careful not to scratch Control Panel Refrigerator Disassembly 1. Unscrew the screw is located in the lower portion of the display. 2. Insert a flat-blade screwdriver on the slot as shown, and unlock the tabs. 3. Disconnect the wire connector. 35
3. Full Disassembly and Assembly Part Name Work Order Remarks Door Gasket The door gasket is a molded gasket set into a channel located in the door liner. 1. Open the door. 2. Grasp the gasket and pull in an outward motion until the molded gasket separates from the door liner. Be careful not to scratch Refrigerator Disassembly Refrigerator Door Light Switch The refrigerator has a door light switch located in the upper right corner for the refrigerator. 1. Use a small flat-blade screwdriver to unlock the locking tab and pull the switch out until the wire connector is visible. - Be careful not to scratch - When diassembling, make sure the unit turned off 36
3. Full Disassembly and Assembly Part Name Work Order Remarks Refrigerator Light The refrigerator light is located in the upper portion of refrigerator. 1. Place a flat screwdriver under the light cover hooks and remove it pusing in the direction of the arrow. 2. Replace the bulb with a new one When diassembling, make sure the unit turned off Tempered Glass Shelf in the Refrigerator Disassembly These shelves allow the storage of larger items and pull out for easy access. 1. Pull the shelf out as far as it goes. 2. Lift it up and remove it. Be careful not to scratch Plastic Drawers in the Refrigerator Drawers are designed for storage of fruits, vegetables, and deli items. The drawers are located in the lower portion of the refrigerator. 1. Pull out the drawer as far as it goes. 2. Tilt the drawer up and pull it out until it is removed. Be careful not to scratch Gallon Door Bin in the Refrigerator The door bins allow storage of perishable items. 1. Push the bin up and slide it out. Be careful not to scratch 37
3. Full Disassembly and Assembly Part Name Work Order Remarks Water Filter The water filter is located behind the Deli Bin of the Refrigerator Disassembly refrigerator. The water filters water for the ice maker and the water dispenser. 1. Remove the Deli Bin by holding the handle, pulling it out, and then lifting up the back side of the Deli Bin bottom smoothly with the other hand. 2. Turn the water filter 1/2 turn counterclockwise and pull it down. 3. To install the filter, align the indication mark (unlock position) and push it up while turning ½ turn clockwise until the lock position is aligned. Do not over tighten. Damper in the Refrigerator 1. Place a flat screwdriver under the light cover hooks and remove it pusing in the direction of the arrow. 2. Remove two screws at the cover damper. 3. Take off sensor and lamp wire connector located on the upper liner. 4. Remove the damper from the refrigerator. When diassembling, make sure the unit turned off 38
3. Full Disassembly and Assembly Part Name Work Order Remarks Twin cool in the Refrigerator 1. Pull out the Twin cool by unlocking the hooks. Be careful of injury Refrigerator Disassembly Refrigerator Thermistor Cover Damper The refrigerator thermistor is located inside of the upper light cover of the refrigerator. 1. Remove the Cover Damper by pulling out. 2. Remove the tapes of the insulation to replace Thermistor. Be careful not to scratch Thermistor 39
3. Full Disassembly and Assembly Part Name Work Order Remarks Door Bin in the Freezer The door bins allow storage of perishable items. 1. Push the bin up and slide it out. Be careful not to scratch Freezer Door Light Switch This switch is located in the left-hand portion of the freezer and sends a signal to the processor. 1. With a small flat-blade screwdriver, unlock the locking tabs and pull the switch out until the wire connector is visible. 2. Disconnect the wire connector and remove the switch. Be careful not to scratch Freezer Disassembly Plastic Drawer in the Freezer Drawers are designed for storage of meat and dry foods. The drawers are located in the lower portion of the freezer. 1. Pull out the drawer as far as it goes. 2. Tilt the drawer up and pull it out until it is removed. Be careful not to scratch Freezer Shelf The shelves slide out for easy access for frozen items. 1. Slide the shelf out until it reaches its stop. 2. Tilt down and slide it out of the compartment. Be careful not to scratch 40
3. Full Disassembly and Assembly Part Name Work Order Remarks Ice Dispenser & Ice Maker The ice dispenser is located in the upper portion of the freezer. This assembly stores ice made by the icemaker and dispenses ice. 1. Lift the ice bucket up ① and slide out the ice dispenser assembly ②. ① ② Be careful not to scratch Freezer Disassembly The ice maker is located inside of the ice dispenser assembly. 1. Remove ice maker support screws (2), and slide out. 2. Disconnect the ice maker wire connector. 3. Unlock the locking tabs to separate the ice maker kit. When diassembling, make sure the unit turned off In order to assemble the icemaker kit. 1. Assemble the geared motor shaft and the front of ice tray. 2. Lift the front locking tab and assemble the ice maker kit. 3. Connect the ice maker wire connector. 4. Match the tab holes and tabs(2) located on the top of the liner, and slide the ice maker in. 5. Tighten the screws (2) of the ice maker support. When diassembling, make sure the unit turned off 41
3. Full Disassembly and Assembly Part Name Work Order Remarks Auger Motor Case This shelf is designed to support the ice maker ＆ ice dispensed and Xtra Space. TM. 1. Remove the Xtra Space. TM cover to push it down and pull front. 2. Slide the partition out. 3. Remove the screws (2) on the bottom front of the case. 4. Slide out the case while disconnecting the wire connect. - Be careful not to scratch Freezer Disassembly Freezer Light The freezer light is located in the bottom of the auger motor case. The light is covered by an opaque cover. 1. Remove the screw and the light cover. When diassembling, make sure the unit turned off Evaporator Fan Motor in the Freezer The evaporator fan is located in the middle rear of the Freezer. This fan circulates cold air in the refrigerator. 1. Remove the fan spring, and than remove fan and protector motor. 2. Remove screw located at the four corners of the fan bracket. 3. Take the fan motor assembly off. - Be careful not to scratch 42
3. Full Disassembly and Assembly Part Name Work Order Remarks Evaporator Cover in the Freezer Disassembly 1. Remove cap-screw (2) of assy cover supt motor fre. 2. Remover four screws of assy cover supt motor fre. 3. Remove the assy cover supt motort fre by pulling it. 4. Remove screw of the assy cover multi fre and disconnect the wires. 5. Remove assy cover multi fre by pulling it. 6. Remove two screws of the cover evap front. 6. Pull the cover evap front. When diassembling, make sure the unit turned off 43
3. Full Disassembly and Assembly Part Name Work Order Evaporator in the Freezer Evaporator is located in the bottom of freezer to produce cold air driven across the evaporator coils. 1. Take off the ductwork in Freezer. 2. Disconnect the wire connector (Heater, Bimental, and Thermistor). 3. Desolder the inlet and outlet tubes. 4. Remove the evaporator. 5. Take the same steps to seal the system as mentioned earlier. Remarks Accumulator Bimetal Thermistor Suction Line Heater When diassembling, make sure the unit turned off Freezer Disassembly Freezer Thermistor The freezer thermistor is located at the top left of freezer vent. It sends temperature signals to the micro-processor. When diassembling, make sure the unit turned off Ice-Maker Thermistor The Ice-Maker thermistor is located in its bottom. The temperature signal sends the micro-processor. When diassembling, make sure the unit turned off 44
3. Full Disassembly and Assembly Part Name Work Order Remarks Machine Compartment & Electric Box 1. Disconnect the power cord of the refrigerator. 2. Remove the fixed screws (7) of compressor cover. When diassembling, make sure the unit turned off Machine Compartment Disassembly 3. Slide up and take off the compressor cover to see the machine compartment. When diassembling, make sure the unit turned off 4. Remove screw (2) on the cover. When diassembling, make sure the unit turned off 45
3. Full Disassembly and Assembly Part Name Work Order Remarks Water Solenoids & Electric Box When the solenoids receive a signal from the microprocessor, they supply water to the water dispenser or the ice maker. 1. Remove bracket screw on cabinet. 2. Take the solenoids assembly out. 3. Disconnect water tubes. When diassembling, make sure the unit turned off Condenser Fan Machine Compartment Disassembly The condenser Fan is located in the middle of machine compartment. It cools down the subcondenser and the compressor. 1. Lift up the rib under the support motor. 2. Pull the support motor. Be careful of injury Condenser The condenser is located in the machine compartment. The heat is extracted by condenser fan. 1. Desolder the compressor discharge ＆the condenser outlet. 2. Take out the condenser. When diassembling, make sure the unit turned off 46
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 1) When power is not supplied ☜ Double Click 47
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 2) When there is a trouble with Self Diagnosis ☜ ☜ Double Click 48
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 3) When COMP does not operate ☜ Double Click 49
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 4) When FAN & DAMPER does not operate ☜ Double Click 50
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 4) When FAN & DAMPER does not operate ☜ Double Click 51
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 5) When FAN & DAMPER does not operate ☜ Double Click 52
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 6) When Alarm Sound continues without stop ☜ ☜ Double Click 53
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 7) When Room Lamp does not light up ☜ Double Click 54
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 8) When Water Valve Does Not Operate ☜ Double Click 55
4. Troubleshooting and Major Adjustment 4 -1. Troubleshooting 9) When Crush (Crushed Ice ) & Cube (Cubed Ice) does not operate well ☜ Double Click 56
4. Troubleshooting and Major Adjustment 4 -2. Test (Forced operation/Forced defrost) v When pressing Refrigerator temp set KEY and ICE TYPE KEY in PANEL PCB simultaneously for more than 8 sec. PANEL DISPLAY will go off and it moves onto TEST MODE. At this point, although Freezer/Refrigerator temp set KEY, Power freezing KEY, and ICE TYPE KEY are pressed, it operates by TEST KEY. v When pressing TEST KEY, Test function shall be changed in the order as Forced Operation --> Forced Freezer Defrost---> Cancellation(normal operation)---> Forced Operation. If functions are canceled during the operation of TEST function, it is most desirable to turn off the power and turn it on again. Press for 8 seconds 57
4. Troubleshooting and Major Adjustment 4 -2. Exhibition Mode v When pressing Power Freeze and Freezer KEY on the front Display PANEL simultaneously for 3 seconds. It will operate as Exhibition Mode with Ding Dong sound. Press for 3 seconds - Contents of operation in Exhibition Mode DISPLAY, FAN MOTOR, and DISPENSER will operate normally except for Comp. and C-Fan. - Exhibition Mode is not cleared even if power reset. - To cancel Exhibition Mode, press same key (Power Freeze and Freezer KEY) for same time (3 secsonds) - If the temperature of Freezer/Fridge increases more than (149 ℉/65°C) in Exhibition Mode, it will restore to normal operation mode. 58
4. Troubleshooting and Major Adjustment 4 -3. Self-Diagnosis 1) Self-Diagnosis in the initial Power ON 1 -1) With POWER ON, it shall diagnose the status of temp SENSOR in a minute in MICOM internally for itself. 1 -2) If inferior sensor is found after self-diagnosis, corresponding DISPLAY LED will be all off at the interval of 0. 5 sec. and there will be no sound with LED ON. 1 -3) In the state that inferior sensor is found and DISPLAY ICON is off, it only recognizes selfdiagnosis KEY (Press Ice Type KEY + FILTER RESET KEY(LIGHT KEY) for 8 sec. ) and normal temp control will be on hold. 1 -4) On self-diagnosis ERROR, if inferior sensor is fixed or if you press ICE TYPE KEY + FILTER RESET KEY(LIGHT KEY) for 8 sec. , it will be canceled automatically. 2) Self-Diagnosis in the normal operation 2 -1) When pressing “ ICE TYPE ” and “ FILTER RESET(LIGHT) ” KEYS simultaneously for 6 sec. in normal operation of the fridge, temp set DISPLAY will be All ON/OFF for 2 sec. at the interval of 0. 5 sec. and when pressing “ ICE TYPE ” and “ FILTER RESET(LIGHT) ” KEYS simultaneously for 8 sec. including TOGGLE for 2 sec. , self-diagnosis will be selected. 2 -2) At this point, “ SOUND ”shall be heard and it operates self-diagnosis. 2 -3) When self-diagnosis operates, entire LED will be OFF and only relevant LED with malfunction will be ON / OFF repeatedly signifying defects. (Refer to the below selfdiagnosis CHECK LIST) 2 -4) When an ERROR occurs, it will be indicated for 30 sec. and restored to the normal status regardless of maintenance. 2 -5) During self-diagnosis KEY input will not be recognized. 59
4. Troubleshooting and Major Adjustment 4 -3. Self-Diagnosis Press for 8 seconds 3) Self-diagnosis with initial POWER ON 3 -1) With POWER ON, it shall diagnose the status of temp SENSOR in a minute in MICOM internally for itself. 3 -2) If inferior sensor is found after self-diagnosis, corresponding DISPLAY LED will be all off at the interval of 0. 5 sec. and there will be no sound with LED ON. 3 -3) In the state that inferior sensor is found and DISPLAY ICON is off, it only recognizes self-diagnosis KEY (Press Ice Type KEY + FILTER RESET KEY(LIGHT KEY) for 8 sec. ) and normal temp control will be on hold. 3 -4) On self-diagnosis ERROR, if inferior sensor is fixed or if you press ICE TYPE KEY + FILTER RESET KEY(LIGHT KEY) for 8 sec. , it will be canceled automatically. 60
4. Troubleshooting and Major Adjustment 4 -3. Self-Diagnosis 4) Self-diagnosis during normal operation 4 -1) When pressing “ ICE TYPE ” and “ FILTER RESET(LIGHT) ” KEYS simultaneously for 6 sec. in normal operation of the fridge, temp set DISPLAY will be All ON/OFF for 2 sec. at the interval of 0. 5 sec. and when pressing “ ICE TYPE ” and “ FILTER RESET(LIGHT) ” KEYS simultaneously for 8 sec. including TOGGLE for 2 sec. , selfdiagnosis will be selected. 4 -2) At this point, “ SOUND ”shall be heard and it operates self-diagnosis. 4 -3) When self-diagnosis operates, entire LED will be OFF and only relevant LED with malfunction will be ON / OFF repeatedly signifying defects. (Refer to the below selfdiagnosis CHECK LIST) 4 -4) When an ERROR occurs, it will be indicated for 30 sec. and restored to the normal status regardless of maintenance. 4 -5) During self-diagnosis KEY input will not be recognized. 61
4. Troubleshooting and Major Adjustment 4 -3. Self-Diagnosis v Details of self-diagnosis lighting by NO 1 2 3 Item Refrigerator SENSOR Peripheral temp SENSOR Freezer SENSOR DISPLAY LED Trouble Shooting Remark Refrigerator "MID" Fall out SENSOR HOUSING in Refrigerator contanct failture, breakage of wire, short-circuit, inferior Refrigerator SENSOR and others. Indicating a defect when the temp sensing of Refrigerator SENOSR is above (149°F/65 °C) and below (-58 °F/-50 °C). The voltage should be within the range of 4. 7 V~0. 6 V between MAIN PCB CN 30 # 8 and #9. Refrigerator "MIN" Fall out peripheral temp SENSOR HOUSING , contact failure, breakage of wire, shortcircuit, inferior peripheral sensor and others. Indicating a defect when the temp sensing of peripheral temp SENOSR is above (149°F/65 °C) and below (-58 °F/50 °C). The voltage should be within the range of 4. 7 V~0. 6 V between MAIN PCB CN 31 # 1 and #4. Freezer "MAX" Fall out SENSOR HOUSING in Freezer, contact failure, breakage of wire, shortcircuit, inferior Freezer SENSOR and others. Indicating a defect when the temp sensing of Freezer SENOSR is above (149°F/65°C) and below (-58 °F/-50 °C). The voltage should be within the range of 4. 7 V~0. 6 V between MAIN PCB CN 30 # 4 and #5. 62
4. Troubleshooting and Major Adjustment 4 -3. Self-Diagnosis NO 4 Item Freezer Defrost SENSOR DISPLAY LED Trouble Shooting Remark Freezer "MID" Fall out Deforst - SENSOR HOUSING in the evaporator of Freezer, contact facilure, breakge of wire, short-circuit, inferior sensor and others. Indicating a defect when the temp sensing of Freezer Defrost SENOSR is above (149 °F/65 °C) and below (-58 °F/-50 °C). The voltage should be within the range of 4. 7 V~0. 6 V between MAIN PCB CN 30 # 4 and #6. Fall out Freezer Heater Housing, contact failture, breakage of wire, short circuit, inferior Freezer Heater, or inferior Defrost temp fuse and etc. On Freezer Defrost 90 min. automatic completion Ejection restoration failure more than 3 times. Push the test buttono n. I/M Ass'y and It should work. Fall out I/M SENSOR HOUSING, contact failure, brekage of wire, short-circuit, inferior I/MSENSOR and etc. The voltage should be within the range of 4. 7 V~0. 6 V between MAIN PCB CN 90 #3 and #4. Damper Heater Slipped Away, Poor Contact, Wire Breakage, Short Circuit, Defective Damper Heater Indicates error when the Damper Heater is detected as open (Only for Energy Star) 5 Freezer Defrost ERROR Freezer "MIN" 6 I/M Function ERROR ICE OFF 7 I/M SENSOR ERROR Cubed LED 8 DAMPER HEATER 9 F-FAN RESTRAINT Crushed Ice F-Fan Restraintor Defect Upon detection of F-Fan restraint (Only for Energy Star) 10 C-FAN RESTRAINT Crushed Ice (Blinking) C-Fan Restraintor Defect Upon detection of C-Fan restraint (Only for Energy Star) Refrigerator "MAX" 63
4. Troubleshooting and Major Adjustment 4 -4. Load Staus Display 1) When pressing “ICE TYPE” and “FILTER RESET(LIGHT)” KEYS simultaneously for 6 sec. in normal operation, the indicators of temp set in Freezer/Refrigerator will all ON/OFF for 2 sec. at the interval of 0. 5 sec. At this point, when pressing Temp Set Key in Refrigerator while canceling “ICE TYPE” and “FILTER RESET(LIGHT)” KEYS, it operates load status display. 2) Load status display will show the load in operation REAL TIME. However, it is not related to real status of operation of load and it only shows the directed status of the load operation command from MICOM. 3) Only corresponding ICON for the load in operation will be ON/OFF repeatedly and turned off. 4) Load status display will continue for 30 sec. and it will restore to the normal state. ②Press after ① ①Press for 6 seconds 64
4. Troubleshooting and Major Adjustment 4 -4. Load Staus Display NO Item DISPLAY LED Problem 1 Damper Refrigerator "MIN" (1’st) LED ON when. Damper is open 2 Condition for Refrigerator "MID" (3’rd) LED ON when Ambient temp is over (95°F/35 °C) 3 over load Refrigerator "MAX" (5’th) LED ON when ambient temp is lower than (62. 6 °F/17 °C) 4 Condition for Freezer "MIN" (1’st) Relevant LED ON when. COMP operates 5 low temp Freezer "MID" (3’rd) LED ON when Freezer Defrost Heater operates 6 COMP Freezer "MAX" (5’th) Relevant LED ON when Freezer-FAN HIGH operates 7 Freezer Defrost ICE OFF LED ON in Display mode 8 Heater CUBE LED Relevant LED ON when Dispenser Heater gets ON 9 Freezer FAN CRUSH LED Relevant LED ON when Damper Heater gets ON 65
4. Troubleshooting and Major Adjustment 4 -5. Option Setting v When the F-Room Temp Setting button and the Filter Reset button or the Lighting button are pressed for 12 seconds continuously, the display will be converted to the option setting mode. Press for 12 secs. 1) For example, if you want to shift the Refrigerator Standard temp by (26. 6°F/-3°C), proceed the following. It is to shift the standard temperature. The F-Room standard temp is (-4°F /-20°C) (MID). When it is shifted (26. 6°F/-3°C) by using the option, the standard temp will be set to (-9. 4°F/-23°C) when the temp option is changed, it will be controlled to (-9. 4°F/ -23°C) internally even though it is set to MID on the display panel. . So, shifting the standard temperature by (26. 6°F/-3°C) means that it is controlled by (26. 6 °F/-3 °C) increase than the temp set on the display panel. 1 -1) As shown in the draft, press the Freezer button and the FILTER RESET BUTTON OR LIGHTING BUTTON for 12 seconds simultaneously. - Except the Freezer &the Fridge LEDs, all LEDs will be turned off. 66
4. Troubleshooting and Major Adjustment 4 -5. Option Setting 1 -2) When it is changed to the option mode, all of the OPTION CATEGORY (I 1~I 5)and, the OPTION SETTING (V 1~V 4) will display "0"(ALL OFF). (The option should be set “ 0”for shipment, but this standard set value could be changed and shipped for quality improvement during mass production. ) - The LED arrangements of the OPTION CATEGORY and the OPTION SETTING for different specs are as follows. RS 2530 B** I 1 FRIDGE MIN I 2 FRIDGE MID-M IN I 3 FRIDGE MID I 4 FRIDGE MID-M AX I 5 FRIDGE MAX V 1 FREEZER MIN V 2 FREEZER MID-MIN V 3 FREEZER MID V 4 FREEZER MID-MAX (For the Value Spec, the Dispenser LED is used due to the insufficient number of panel LEDs. ) 67
4. Troubleshooting and Major Adjustment 4 -5. Option Setting 1 -3) If you set “ 6"as shown in the Freezer option table below after setting “ 0"to the OPTION CATEGORY, the Refrigerator standard temp will be lowered by -5. 4°F(Refer to the Refrigerator Temp Option Table) : In 20 seconds after completion of adjustment, the MICOM will store the set value to the EEPROM and it will revert to the normal display and the option setting mode will be cancelled. 1 -4)To increase/decrease the OPTION CATEGORY. , press the Fridge button and the Filter Reset(or Lighting button)respectively and to increase/decrease the OPTION SET VALUE, press the Freezer button and the Ice Type button respectively. 1 -5)The option function will be set in the EEPROM before shipment, so do not change the setting except special cases. For the option function, the setting will be completed when it is reverted to the normal display in 20 seconds. So, do not turn off the power before it is reverted to the normal display. 1 -6) Make sure to set the OPTION CATEGORY. (I 1~I 5)first and then set the OPTION SETTING(V 1~V 4). Note Basically, refrigerators are shipped with option data cleared. i. e. products are shipped with set values all "0". But, for quality improvements during MP, refrigerators could be produced with set values changed. So, make sure to check the Quality Information. 68
4. Troubleshooting and Major Adjustment 4 -5. Option Setting APP. EX)TO DECREASE FREEZER STANDARD TEMP BY (-5. 4°F/-3°C). Option Setting (6: (-5. 4ºF/3ºC)) Option Category (0: Freezer Standard Temp) APP. EX)TO DECREASE FREEZER STANDARD TEMP BY (-5. 4°F/-3°C). Option Setting (10: (2. 7ºF/1. 5ºC)) Option Category (1: Refrigerator Standard Temp) 69
4. Troubleshooting and Major Adjustment 4 -6. Option table With the Freezer button and the Lighting button, additional options can be set. But, those are relevant not to the A/S but to the ref. control function. So, those options are skipped. (Do not change any other options except the above options. ) Note 1) FREEZER TEMP SHIFT TABLE(○: RELEVANT LED OFF, ●: RELEVANT LED ON) SET ITEM Freezer TEMP SHIFT MODEL AD -PJT DISPLAY Option Item VALUE I 1 I 2 I 3 I 4 I 5 0 ○ ○ ○ SET VALUE COMMON Option Value VALUE V 1 V 2 V 3 V 4 0 ○ ○ 1 ● ○ ○ 2 ○ ● 3 ● 4 COMMON Option Value VALUE V 1 V 2 V 3 V 4 0°F /0 °C 8 ○ ○ ○ ● 0. 9°F/+0. 5 °C ○ -0. 9 °F/-0. 5 °C 9 ● ○ ○ ● 1. 8 °F/+1. 0 °C ○ ○ -1. 8 °F/-1. 0 °C 10 ○ ● 2. 7 °F/+1. 5 °C ● ○ ○ -2. 7 °F/-1. 5 °C 11 ● ● ○ ● 3. 6 °F/+2. 0 °C ○ ○ ● ○ -3. 6 °F/-2. 0 °C 12 ○ ○ ● ● 4. 5 °F/+2. 5 °C 5 ● ○ -4. 5 °F/-2. 5 °C 13 ● ○ ● ● 5. 4 °F/+3. 0 °C 6 ○ ● ● ○ -5. 4 °F/-3. 0 °C 14 ○ ● ● ● 6. 3 °F/+3. 5 °C 7 ● ● ● ○ -6. 3 °F/-3. 5 °C 15 ● ● 7. 2 °F/+4. 0 °C 70
4. Troubleshooting and Major Adjustment 4 -6. Option table 2) REFRIGERATOR TEMP SHIFT TABLE(○: RELEVANT LED OFF, ●: RELEVANT LED ON) SET ITEM Freezer TEMP SHIFT MODEL AD -PJT DISPLAY Option Item VALUE I 1 I 2 I 3 I 4 I 5 1 ● ○ ○ SET VALUE Option Value COMMON VALUE V 1 V 2 V 3 V 4 0 ○ ○ 1 ● ○ ○ 2 ○ ● 3 ● 4 COMMON VALUE V 1 V 2 V 3 V 4 0°F /0 °C 8 ○ ○ ○ ● 0. 9°F/+0. 5 °C ○ -0. 9 °F/-0. 5 °C 9 ● ○ ○ ● 1. 8 °F/+1. 0 °C ○ ○ -1. 8 °F/-1. 0 °C 10 ○ ● 2. 7 °F/+1. 5 °C ● ○ ○ -2. 7 °F/-1. 5 °C 11 ● ● ○ ● 3. 6 °F/+2. 0 °C ○ ○ ● ○ -3. 6 °F/-2. 0 °C 12 ○ ○ ● ● 4. 5 °F/+2. 5 °C 5 ● ○ -4. 5 °F/-2. 5 °C 13 ● ○ ● ● 5. 4 °F/+3. 0 °C 6 ○ ● ● ○ -5. 4 °F/-3. 0 °C 14 ○ ● ● ● 6. 3 °F/+3. 5 °C 7 ● ● ● ○ -6. 3 °F/-3. 5 °C 15 ● ● 7. 2 °F/+4. 0 °C 71
5. Circuit Descriptions 5 -1. Block Diagram 72
5. Circuit Descriptions 5 -2. Connector Arrangement and Detail Explanation 73
5. Circuit Descriptions 5 -3. Part Arrangment (Main Board) 1. AC Load Connector Part 2. AC Load Control Device Part 3. Panel Display Control Part 4. Ice Maker Control Part 5. Temp. Sensor & Door Switch Sensing Part 6. EXT Sensor & Ice, Water Switch Sensing Part 7. DC Power Supply Part 8. Motor Damper Control Part 9. EEPORM Part 10. Buzzer Control Part ☜ Double Click 74
5. Circuit Descriptions 5 -4. SUB-PCB Connector Configuration 75
5. Circuit Descriptions 5 -5. Circuit Diagram ☜ Double Click 76
5. Circuit Descriptions 5 -6. Wiring Diagram ☜ Double Click 77
5. Circuit Descriptions 5 -7. Power Terminal Oscillation Frequency ● Vcc(DC 5 V) MICOM POWER AND SENSORS << BLDC MOTOR POWER(NOT USE) +12 V(DC 12 V) RELAY, PANEL POWER ● When turned on, rectified AC voltage which is stepped down on 2 nd transformer flows between ① and ③ at about AC 15 V, goes through the diode D 101 and D 104 is changed to DC, and provide constant 12 V. It provides 5 V to MICOM and other circuits via regulator REG 102 (MC 7805 ACT), and make entire PCB operate. ● When the power is applied, currents will be rectified via B and DC 360 V will be generated at the both terminals of the capacitor (C 001). The Top-Switch (TNY 268 P)will be automatically switched to the optimum state according to the secondary load conditions. When currents flow between Top-S/W D and S (5 PIN~7 PIN), there will be currents generated i n the TRANS and the currents i nduced to the TRANS upon power off between D and S will be transferred to the secondary. By repeating the above process, 12 V will be maintained at the secondary C 108 and it will be supplied to the display relay. Also, 5 V will be generated at the C 110 and it will be supplied to the sensor and operate the main PCB. 78
5. Circuit Descriptions 5 -8. Oscillation Circuit It is an Oscillation Circuit for synchronism clock generation and time calculation on the information sending & receiving of the MICOM internal logic elements and when specifications for Resonator change, the timing system of MICOM changes resulting in errors. (Rated parts must be used) 5 -9. Reset Circuit 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 tens second of compared to Vcc voltage(DC 5 V) at MICOM, and it maintains "HIGH"(Vcc Voltage) during normal operation. But, when Vcc drops down to 3. 4~3. 7 V, the reset terminal voltage becomes "LOW". 79
5. Circuit Descriptions 5 -10. EEPROM Detection Circuit A semiconductor memory EEPROM stores data remembering previous settings regardless of power-off, which are indispensable especially in power fluctuating areas. Also, EEPROM sets and uses other options in principle. 80
5. Circuit Descriptions 5 -11. Door Switch Detecton Circuit 1) If R-Door is opened, the contact point of the door switch (4 -3) becomes open, and the current of PCB line comes through R 404 and R 405 and provides 5 volt which is recognized as door is opened, and turn off the fan at different load. When the door is closed, the voltage goes out from R 404 to Switch, the MICOM is applied with OV and the door is recognized as closed. 2) If F-Door is opened, the contact point of the door switch (4 -3) becomes open, and the current of PCB line comes through R 402 and R 403 and provides 5 volt which is recognized as door is opened, and turn off the fan at different load. When the door is closed, the voltage goes out from R 402 to Switch, the MICOM is applied with OV and the door is recognized as closed. 81
5. Circuit Descriptions 5 -11. Door Switch Detecton Circuit 3) Q 401 is the circuit to turn off the auger motor operation when the door is opened. If the door is closed, Vcc voltage of R 402 works as ground via door switch, OV is applied to the base of Q 401, and Q 401 becomes operable, Vcc voltage on "A" part Q 702 base works as emitter on Q 401 collector and creates OV. (Check the operable condition for other parts at load terminals) 4) Condition for door open is the opposite of condition 3 above. Category F R Door DOOR S/W Contact Point CLOSE OPEN MICOM PORT NO #49 #50 MICOM INPUT "LOW" "HIGH" 82
5. Circuit Descriptions 5 -12. Temp Sensing Circuit 1) Sensor uses a thermistor which has a temp coefficient of negative resistance and controls resistance. When the heat goes up, the resistance gets down and vice versa. R 302, 4, 6, 9 and C 301~C 303, C 305 are parts for noise prevention but they are not related to temp sensing characteristics. 2) If Vf is the incoming voltage to MICOM in case of F-Sensor, Vf equals (Rth * Vcc)/ ((R 301 + Rth). Where Rth is resistance of THERMISTOR corresponding to Temp. Please refer to the Appendix Temp-to-Sensor Resistance/Voltage conversion table(Temp-to-MICOM Terminal Voltage included) on A/S. (Next page) 83
5. Circuit Descriptions 5 -12. Temp Sensing Circuit *Temp to Resistance of Sensor & MICOM PORT Voltage Sensor CHIP : PX 41 C Standard ☜ Double Click 84
5. Circuit Descriptions 5 -13. Damper Circuit 1) The temperature of R-room is controlled by opening and closing of damper with stepping motor, supplying & blocking cold air. 2) TA 7774 P (IC 07) operates the damper. TA 7774 P is the driver IC only for step motor. If the regular signal is provided to TA 7774 P from Micom, send combined signal to Quad-Polar step motor to rotate on certain direction. This makes clockwise or counter clockwise rotation to make the damper open or close. 3) Since the damper always touches the cold air, DC 12 V/1 W heater is installed, always on to prevent the malfunction from moisture and is controlled on conditions. (Operation conditions can be changed). Micon #15 pin connected to IC 4 controls the damper heater like category 3. 85
5. Circuit Descriptions 5 -14. Display Circuit 1) KEY SCAN When Grid #6 is output, this signal goes through PCB resistance 10 ㏀ and provided to power frequency. When the switch is pressed, R 502(6. 8 ㏀) and R 501 (12 ㏀) decrease the signal and less than 5. 1 V peak to peak signal is provided to MICOM, the MICOM recognizes the grid #6 is provided, and change the function corresponding to switch key. [Refer the circuit diagram below] 86
5. Circuit Descriptions 5 -14. Display Circuit 2) DISPLAY OPERATION Like the signal diagram below, Micom sends “ high ” signal through MICOM 6 terminals of NO #1→ 2 → 3 → 4 → 5 → 6 for 2 ms every 12 ms. This signal goes to output terminal via input terminal of IC 5 (KID 65783 AP or TD 62783 AP). Output wave always goes through LED input terminal with DC 11~12 V on every period. At this time, if SINK signal comes out at IC 4, DC 11~ 12 V is applied to LED input terminal and output terminal sinks to OV which turn on LED for 2 ms For example, to turn on "Power Fre. " LED, IC 4 #16 pin sinks to 0 V when IC 5 #16 becomes DC 11~12 V making "Power Fre" LED turn on. 88
5. Circuit Descriptions 5 -15. Load Control Circuit 89
5. Circuit Descriptions 5 -15. Load Control Circuit 1) Main PCB processes most of the load control for electronic refrigerators. 2) Compressor, F-Room, defrost heater, and other functions are controlled with relay. 3) For example, to operate compressor, MICOM 29 pin outputs high (5 V) signal which goes into IC 3 Pin #4. The IC 3 pin NO 4 plays the same role as the base of NPN TR. The pin #14 works as collector of TR. So, if 5 V is supplied to pin #4 of IC 3, the pin #15 turned on and connected to the ground. Then, the relay RY 75 and coil connected to the pin #15 of IC 3 becomes low (OV) and +12 V (opposite side of coil) flows to the pin #15 of IC 3 via coil and goes into the ground. While current flows to the coil, the magnetic power arise, it turns on the secondary contact point inside of RY 75, and operates when the AC power is supplied to the both side of comp. When MICOM #29 Pin becomes Low(0 V), IC 3 #4 Pin becomes Low which makes Power cut and current of RY 75 RELAY cut. So, secondary contact becomes off due to magnetic field cut, which makes Comp off. 4) All other loads work basically on same principle, defrost heater operates only on the condition that the compressor is turned off like the circuit above, and connected like the equivalent circuit below. * Q 702 is connected to the F door switch to prevent PL accident due to continuous operation of motor when the auger motor control circuit is not working properly. It must be turned off when the door is opened. 90
5. Circuit Descriptions 5 -16. Ice Maker Operation Circuit 91
5. Circuit Descriptions 5 -16. Ice Maker Operation Circuit 1) The ice maker circuit above is to control the ice maker kit installed on the F room. 2) 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. If MICOM PORT #7 is outputted with High to rotate motor in ejection direction and the pin #2 of IC 5 is inputted, 12 V is outputted on pin #17 of IC 5, goes to motor and supplied to pin #11 of IC 4. As pin #8 of IC 4 and eject MICOM port #7 are connected in common, 11 output port of IC 4 gets on and the current flows into Ground making motor rotates. This motor rotates the gear and rotates the ejection tray. The tray twists to separate the ice from the tray and return to the horizontal state. 3) For restoration, motor stops for 2 seconds when the ejection is completed and to rotate in opposite direction, output horizontal MICOM port with high and perform horizontal positioning. 4) The test S/W is off in normal cases and MICOM PORT 63 stays high. When necessary, press the switch for more than 1. 5 seconds making forced ejection executed. Full S/W has a lever that detects the amount of ice on ice-maker kit and based on the status of MICRO S/W connected to the lever, if the ice is full on the container, ejection is not executed, and only if it is off (MICOM PORT 61 is high), the ejection is executed. 92
5. Circuit Descriptions 5 -17. Option Circuit OP 11, OP 12 OP 11 OP 12 MODEL FUNTION ○ ○ RS 2*11 No Cruch, 3 Step, Light ○ ● RS 2*21 Cruch, 3 Step, Light ● ○ RS 2*31 Cruch, 5 Step, P/F, L/T Lock, Filter, Indicator * ● Jumper USE OP 2 * ● Water Fill Time Cantrol Option This circuit operates with the initial power on, uses DIODE (1 N 4148) or JUMPER WIRE. To modify option circuit, Power must be turned off before modification and turned on after the modification. Refer to the table below, the default factory values are highly recommended unless exceptional cases. D 601 D 602 Fill Time Remark ● ● 5 Sec ● ○ 6 Sec Flow Sensor Not USE ○ ● 7 Sec ○ ○ 10 Sec * ● Diode(1 N 4148) USE 93
5. Circuit Descriptions 5 -18. Measure Load Terminals 94
5. Circuit Descriptions 5 -18. Measure Load Terminals * Turn off Power, disassemble Housing connected to MAIN PCB CN 70, 71, 72 and measure followings LOAD TERMINALS PCB CASE 1) DEFROST HEATER 2) ICE PIPE HEATER CN 71 ⑪ & ③ DISPENSER HEATER CN 72 ① & ③ WATER VALVE ICE MAKER CN 70 ⑤ & CN 71 ③ WATER VALVE DISPENSER CN 70 ⑦ & CN 71 ③ AUGER MOTOR CN 70 ① & CN 71 ③ CUBE SOLENOID CN 70 ③ & CN 71 ③ COMP. FAN MOTOR CN 71 ⑦ & ③ F FAN MOTOR CN 71 ① & ③ VALUE DEFECTS 0Ω THERMAL FUSE, HEATER, WIRE SHORT THERMAL ∞Ω BIMETAL, HEATER, WIRE CUT 0Ω HEATER, WIRE SHORT ∞Ω HEATER, WIRE CUT OR HOUSING SLIPPED AWAY 0Ω COIL, WIRE SHORT ∞Ω COIL, WIRE CUT 0Ω MOTOR, WIRE SHORT MOTOR, WIRE CUT OR ∞Ω HOUSING SLIPPED AWAY 0Ω MOTOR, WIRE SHORT ∞Ω MOTOR, WIRE CUT OR HOUSING SLIPPED AWAY OTHERS 95
5. Circuit Descriptions 5 -18. Measure Load Terminals * Turn on Power and check status of Relay & Driving Circuit by checking followings according to load operation. LOAD RELAY TERMINALS VALUE DEFROST / COMP OFF RY 76 /RY 75 CN 71 SUPPLY VOLTAGE (SV) RY 75 CN 71 SV RY 75 NO CONTACT SHORT, FAULTY DRIVING CIRCUIT RY 76 /RY 75 CN 71 SV FAULTY RY 75 / RY 76 NO CONTACT SHORT, FAULTY DRIVING CIRCUIT RY 75 CN 71 0 V RY 75 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT RY 76 /RY 75 CN 71 0 V FAULTY RY 76 / RY 75 NC CONTACT OPEN, FAULTY DRIVING CIRCUIT RY 75 CN 71 SV RY 75 NO CONTACT SHORT, FAULTY DRIVING CIRCUIT CUBE & AUGER MOTOR OFF RY 73 /RY 74 CN 71⑨∼CN 70③ SV RY 73 & RY 74 NO CONTACT SHORT, FAULTY DRIVING CIRCUIT RY 74 CN 71⑨∼CN 70① SV RY 74 NO CONTACT SHORT, FAULTY DRIVING CIRCUIT CUBE & AUGER MOTOR OPERATING RY 73 /RY 74 CN 71⑨∼CN 70③ 0 V RY 73 OR RY 74 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT RY 74 CN 71⑨∼CN 70① 0 V RY 74 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT F FAN ON RY 79 CN 71①∼⑨ 0 V RY 79 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT C FAN ON RY 77 CN 71⑦∼⑨ 0 V RY 77 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT WATER VALVE DISPENSER OPERATING RY 71 CN 71⑨∼CN 70⑦ 0 V RY 71 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT WATER VALVE ICE MAKER OPERATING RY 72 CN 71⑨∼CN 70⑤ 0 V RY 72 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT COMP ON DEFROST WHEN IT IS DIFFERENT FROM MEASURED VALUE RY 76 CONTACT SHORT, FAULTY DRIVING CIRCUIT 96
5. Circuit Descriptions 5 -19. Measure Sensor Terminals * Check after disassembling connected to MAIN PCB CN 30 &CN 32 * Because it is NTC TYPE Sensor, resistance decreases as temp increases 1. Measure resistance between CN 30 ⑧ and ⑨ for R-Sensor. 2. Measure resistance between CN 30 ⑤ and ④ for F-Sensor. 3. Measure resistance between CN 30 ⑥ and ④ for DEF-Sensor. 4. Measure resistance between CN 30 ① and ④ for Ambient-Sensor. 5. Compare the above values with current temps of Sensor locations and Part Spec in Manual and evaluate them. 97
5. Circuit Descriptions 5 -20. Service Parts List For Circuit NO ITEM SPEC CODE NO 1 PBA-MAIN ELECTRONIC DA 41 -00219 K 2 PBA PANEL ELECTRONIC DA 41 -00406 A 3 TRANS DC 115 V/60 Hz DA 26 -00022 A DEF SENSOR DA 32 -00006 D R SENSOR DA 32 -00006 B ICE MAKER SENSOR DA 32 -10108 B AMBIENT SENSOR PBA PANEL IN 4 SENSOR OTHERS 98
6. Reference Information 6 -1. Q&A Problem The refrigerator does not work sufficiently or at all The food in the refrigerator is frozen Unusual noises or sounds are heard Possible Causes 1. Disconnected power plug 2. Is the temperature control on the display panel set to the correct temperature? 3. Is the refrigerator in direct sunlight or located near a heat source? 4. Is the back of the refrigerator too close to the wall? 1. Is the temperature control on the display panel set to the correct temperature? 2. Is the temperature in the room too low? 3. Did you store the food with a high water content in the coldest part of the refrigerator. 1. Is the back of the refrigerator too near to the wall? 2. Was anything dropped behind or under the refrigerator? 3. A “ticking” sound may be heard from inside the refrigerator. This is normal and occurs because various accessories contract or expand. What To Do 1. Check that the power plug is properly connected. 2. Try setting it to a lower temperature. 3. Move the refrigerator to the proper location. 1. Try setting it to a warmer temperature. • Check that the floor is levelled and stable. 1. Move the refrigerator to the proper location. 2. Remove the foreign thing. The front corners and sides of the cabinet are hot; condensation occurs 1. HOT-PIPE is installed in the front corners of refrigerator. That makes refrigerator’s temperature low quickly and save the power consumption. 2. Condensation can occur when you leave the door open for a long time. 1. Normal state 2. Normal state Ice is not dispensed 1. Did you stop the ice making function? 2. Is there any ice in the storage unit? 3. Is the water pipe connected and the shut-off valve open? 4. Is the freezer temperature too warm? 5. Did you wait for 12 hours after installation of the water supply line before making ice? 1. See the control panel. 2. See the ice container. 3. See the valve. 4. Set the temperature lower. 99
6. Reference Information 6 -1. Q&A Problem You can hear water bubbling in the refrigerator Possible Causes 1. The bubbling comes from the refrigerant circulating in the refrigerator and is normal. What To Do 1. Normal state There is a bad smell in 1. Wrap strong smelling food so that it is airtight. Throw away any rotten food. the refrigerator Frost forms on the wall of the freezer No water is supplied 1. Is the air vent blocked? 2. Is the door closed properly? • Allow sufficient space between stored food for efficient air circulation. 1. Is the water pipe connected and the shut-off valve open? 2. Is the water supply pipe crushed? 3. Is the water tank frozen because the refrigerator temperature is too low? Select a warmer setting on the display panel. Small or hollow cubes Water filter clogged. Replace filter cartridge with new cartridge or with plug. Slow ice cube freezing • Door left open. • Temperature control not set cold enough. • Check to see if package is holding door open. • See about the controls. • Defrost heater is on. • This is normal. Orange glow in the freezer 100
6. Reference Information 6 -1. Q&A Problem Possible Causes What To Do Cube dispenser does not work(on some models) 1. Icemaker turned off or water supply turned off. 2. Ice cubes are frozen to icemaker feeler arm. 3. Irregular ice clumps in storage container. 4. Dispenser is LOCKED. 1. Turn on icemaker or water supply. 2. Remove cubes and move the feeler arm to the ON position. 3 -1. Break up with fingertip pressure and discard remaining clumps. 3 -2 Freezer may be too warm. Adjust the freezer control to a colder setting, one position at a time, until clumps do not form. 4. Press and hold the CHILD LOCK for 3 seconds. Water has poor taste/odor (on some models) Water dispenser has not been used for a long time. • Dispense water until all water in system is replenished. Water in first glass is warm (on some models) 1. Normal when refrigerator is first installed. 2. Water dispenser has not been used for a long time. 3. Water system has been drained. 1. Wait 24 hours for the refrigerator to completely cool down. 2. Dispense water until all water in system is replenished. 3. Allow several hours for replenished supply to chill. Water dispenser does not work(on some models) 1. Water supply line turned off or not connected. 2. Water filter clogged. 3. Air may be trapped in the water system. 4. Dispenser is LOCKED. 1. See Installing the water line. 2. Replace filter cartridge or remove filter and install plug. 3. Press the dispenser arm for at least two minutes. 4. Press and hold the CHILD LOCK pad for 3 seconds. 101
6. Reference Information 6 -1. Q&A Problem Water spurting from dispenser (on some models) Water is not dispensed (on some models) but icemaker is working Water on kitchen floor or on bottom of freezer No water or ice cube production Possible Causes 1. Newly-installed filter cartridge. 2. Water in reservoir is frozen. 3. Refrigerator control setting is too cold. 4. Ice cubes stuck in icemaker. (Green power light onicemaker blinking) 1. Drain in the bottom of the freezer clogged. 2. Cubes jammed in chute. 1. Supply line or shutoff valve is clogged. 2. Water filter clogged. 3. Dispenser is LOCKED. What To Do 1. Run water from the dispenser for 3 minutes (about one and a half gallons). 2. Call for service. 3. Set to a warmer setting. 4. Turn off the icemaker, remove cubes, and turn the icemaker back on. 1 -1 See Care and cleaning. 1 -2 Check the lock of filter. 2. Poke ice through with a wooden spoon. 1. Call a plumber. 2. Replace filter cartridge or remove filter and install plug. 3. Press and hold the CHILD LOCK pad for 3 seconds. 102
6. Reference Information 6 -2. Model name (nomenclature) R S 25 30 B SH / XAA Buyer Code: XAA, XAC, CUR COLOR: WW-WHITE(PCM) SH - STAINLESS PLATINUM (DOOR: STAINLESS PLATINUM) (CABI: STAINLESS PLATINUM) SW-SNOW WHITE SL-NOBLE STAINLESS MAIN OPTION (specifications for initial development) {11 - VALUE / 21 - GOOD / 31 - BETTER} SAMSUNG 30 - BEST BUY 30 A - BBY'06 M/C (Improvement - Brightness & Appearance) 30 B - Contour Door Application 40 - ENERGY STAR V*, W*, X*, Y*, Z* ➝ Other Area Capacity: 25. 26 cu. ft Family: S – SIDE BY SIDE (SBS) Label Location Product: R-SAMSUNG REFRIGERATOR B-OEM REFRIGERATOR 103
Thank you The End 104
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