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  4. RFS-26D1 Series
  5. Service Manual

Daewoo RFS-26D1 Series Service Manual

Summary of RFS-26D1 Series

  • Page 1

    July. 2010. S/m no. : rfs701d001.

  • Page 2: C O N T E N T S

    1 c o n t e n t s 1. Warnings and precautions for safety ------------------------------------------------ 2. External view 2-1. External size -------------------------------------------------------------------------------------------- 2-2. Name of each parts -----------------------------------------...

  • Page 3: C O N T E N T S

    2 c o n t e n t s 8. Trouble diagnosis 8-1. Faulty start -------------------------------------------------------------------------------------------- 8-2. Freezer compartment ------------------------------------------------------------------------------- 8-3. Refrigerator compartment ---------------...

  • Page 4

    3 please observe the following safety precautions in order to use safely and correctly the refrigerator and to prevent accident and danger during repair. 1. Be care of an electric shock. Disconnect power cord from wall outlet and wait for more than three minutes before replacing pcb parts. Shut off ...

  • Page 5

    4 2. External views 2-1. External size.

  • Page 6

    5 refrigerator comparment freezer compartment 1. Ice cubes storage case 6. Pocket dairy 11. Case vegetable 2. Shelf r sm 7. Water/ice dispenser 12. Case wide 3. Refrigerator lamp 8. Pocket sm 13. Case f 4. Shelf r 9. Pocket gallon 14. Case f draw 5. Water filter 10. Pocket utility 15. Freezer lamp 6...

  • Page 7

    6 freezer compartment refrigerator compartment 2-3. Cold air circulation.

  • Page 8

    7 3. Specification item specification factory no. Rfs-26d1.. Gross volume (li) total 737.4li (26.04 ft 3 ) freezer 216.7 li (7.65 ft 3 ) refrigerator 520.7li (18.39ft 3 ) external dimension (width * depth * height) 914mm * 858.4mm *1773.2mm(w/o handle) weight 145kg c o o l i n g refrigerant r-134a q...

  • Page 9

    8 item specification model name rfs-26d1t s e n s o r defrost pbn-43b freezer pt-38 refrigerator pbn-43b ice maker pt-38 rt pbn-43b h e a t e r sheath f as 200w sheath r as 200w r motor as(in urt) 10w r motor as(behind eva) 7w r return duct as 7w w/tank as 4w hose as 5w dv as 8w dispn as 3w i/flap a...

  • Page 10

    9 temperature adjustment button for freezer compartment. Quick ice temperature adjustment button for fridge compartment. Light/filter alarm/lock water crushed ice cube ice 1. Display control 2. “freezer set” button 1) temperature control of freezer compartment 2) 9 step mode of successive temperatur...

  • Page 11

    10 contents remarks 3. “fridge set” button. 1) temperature control of fridge compartment 2) 8 step mode of successive temperature mode. 3) initial mode by power input : “39℉” ※whenever touch button, setting is repeated in the order of 4℃(39℉) →3℃ (37℉) →2℃ (35℉) → 2℃ (35℉) →8℃ (47℉) → 7℃ (45℉) →6℃ (...

  • Page 12

    11 contents remarks 9. “alarm/lock” button 1) when the alarm sounds, touch “alarm/lock” will stop alarming sounds. 2) this button stops operation of different button ① if you touch “alarm/lock” button for 2sec, “alarm/lock” icon is on. ② press this button to lock out this case and to keep temperatur...

  • Page 13

    12 4-2. Control of ice maker room 4. Operation and functions input control object contents remarks i duct/ f/ r sensor flow sensor freezer set compressor r-ice fan 1. Ice room sensor on/off setting value of ice maker room 2. Ice storage mode : after 1 hour detect full ice switch and when five times ...

  • Page 14

    13 4-2. Control of ice maker room 4. Operation and functions contents 6. Ice maker actuation algorism.

  • Page 15

    14 1. Defrost mode input control object contents remarks 1. Defrosting cycle 1. Comp 2. F/r-ice/c fan 3. Fd/rd heater pause fan-delay heater defrosting heater defrosting 1) comp, f/r-ice/c fan : off r damper : close fd/rd heater : on 2) time limit 30 seconds : heater is on regardless of d-sensor tem...

  • Page 16

    15 contents remarks 4. Flow chart of defrosting start start comp. Operating time is over 20 hours? Total time is over 60 hours? End defrosting start comp. Operating time is over 2 hours? Comp. Operating time is over 6 hours? No yes no no any error ? Yes yes yes no no no no comp. Continuing operating...

  • Page 17

    16 1. A/s defrosting mode (heater defrost → pause → fan delay) input control object contents remarks 1. Defrosting cycle heater defrosting 1) comp, f/r-ice/c fan : off r damper : close fd/rd-heater : on 2) time limit 30 seconds : heater is on regardless of fd/rd-sensor temperature right after defros...

  • Page 18

    17 1. They are linked with comp by fridge set input control object contents remarks 1. Comp 2. R-sensor, rt-sensor dv heater water tank heater dispenser heater flap heater 1. Buzzer sounds if any button of front-pcb is pushed. 2. Buzzer sounds 3 seconds after initial power input. 3. Buzzer sounds in...

  • Page 19

    18 4-10. Demonstration 1. Start under “lock” mode, push “light/filter” button 5 times while touch “fridge set” and “quick ice” button simultaneously. 2. Control 1) all other electrical components are off except for dispensor led 2) fan control door open → fan on / door close → fan off. 3) display fr...

  • Page 20

    19 compensation of r-sensor on/off temp. (down) in case temperature of refrigerator compartment is weak or insufficient, take the following action. Input control object contents remarks main pcb resistance of r-sensor on/off temp. Of refrigerator r42 : r-sensor standard resistance in normal mode (31...

  • Page 21

    20 input control object contents remarks water/crushed ice/cube ice dispenser lamp dispenser s/v valve gear motor cube s/v water(dis) s/v 4-12. Control flow & time chart. 1. Control flow & time chart ① crushed ice ② cube ice ③ water delay time : a = 0.5sec , b =0. 5sec , c = 2.0sec , d = 5.0sec , e=...

  • Page 22

    21 1. How to start 1) under “lock” mode, press “quick ice” button 5 times while touch “freezer set” and “fridge set” button at the same time. 2) the front c-led displays as the right diagram shows ( [ex.] time display of 0003 signifies 3 minutes of power on time.) 3) press “freezer set” button and t...

  • Page 23

    22 1) “f1” error cause : f-sensor disconnection or short check point : measure the resistance between both terminals after separating cn14 of the main pcb. If f-sensor is disconnected or shorted , change the f-sensor in the freezer compartment. How to reset : if f-sensor is normal, the error is term...

  • Page 24

    23 contents remarks 12) “es” error (water/crushed ice/cube ice) error) cause : when they sense 1min continuously check the buttons(“water/crushed ice/cube ice“) of the fcp. * when all error code is normal, the refrigerator reset 9) door error (“df” “dr” on display) cause : in case it senses that doo...

  • Page 25

    24 1. All the modes are started “lock” mode (except “water filter reset” mode) 2. Element a/s function input control object contents remarks each button temp display change “quick ice” button for 15 seconds forced defrosting “freezer set” + “fridge set” 5 times reset water filter “light/filter” for ...

  • Page 26

    25 1. Filter exchange information : record a real-time from the point of power input. - the filter is normal for 6 months after the first installation. - when the time comes to change or reset, press the light/filter button for 3 seconds. 2. Function of display of filter change time [step1] press th...

  • Page 27

    26 input control object contents remarks on/off temp. Of freezer & refrigerator compartment front pcb button freezer set , refrigerator set super freeze , super cool dispenser , lock 1. How to start 1) freezer compartment : under “lock” mode, press “light/filter” button 5 times while pressing “quick...

  • Page 28

    27 5. Wiring diagram.

  • Page 29

    Ice maker case vegetable case wide r dr *r switch r dr *l switch r lamp r sensor 28 6. Component locate view 6-1. Refrigerator compartment front control panel.

  • Page 30

    29 6-2. Freezer compartment f sensor f fan f dr switch f lamp r temp fuse evaporator r fan r d sensor r defrost heater f defrost heater f d sensor f temp fuse ice tray f case f draw case.

  • Page 31

    30 6-4. Machine compartment relay cover dryer c fan motor condenser tray drip water valve compressor power cord 6-3. Automatic ice maker compartment automatic ice maker geared motor cold air outlet solenoid valve ice maker sensor.

  • Page 32

    31 no disassembling procedure no disassembling procedure 1 5 2 6 3 7 4 8 ▷pull forward ice storage case ▷remove 2 screws at the cove guide cab w/tube a. ▷ pull forward ice maker ▷disassemble cover guide cab w/tube a ▷disconnect housing on the backside ▷pull forward hose ice maker tube as. ▷disconnec...

  • Page 33

    32 no disassembling procedure no disassembling procedure 1 4 2 5 3 6 ▷disassemble ice maker. ▷unscrew (2 ea).And pull forward geared motor ▷check solenoid valve and geared motor. 7-2. Geared motor assembly 1) disassembling procedure 2) how to check geared motor assembly spec. Criterion ▷good : 2.6Ω(...

  • Page 34

    33 no disassembling procedure no disassembling procedure 1 4 3 6 ▷ separate 2 housings from front pcb. (do not hold only wires to pull out.) ▷unscrew (2ea) to remove sol valve. ▷unscrew (2ea) to remove box dispenser shut. ▷unscrew (1 point) to remove cover ice flap. 7-3. Dispenser solenoid valve 1) ...

  • Page 35

    34 item remark no check point compensation for weak refrigeration →making r-temp cooler 1 * used when making r-temp. Down to compensate for weak refrigeration without changing fcp temp. Setting. ※cutting of j1 ⇒ down by 1.5 ℃ ※cutting of j1, j2 ⇒ down by 3℃ relay power controller 2 * to check normal...

  • Page 36

    35 no disassembling procedure no disassembling procedure 1 6 3 8 ▷ disassemble base f lamp & pcb housing.. ▷unscrew (1 ea) on side inner left surface of box ice maker. ▷remove cover bracker on side of ice maker. ▷ pull forward and remove ice maker as. Attention on back side wires. 7-5. Ice maker 1) ...

  • Page 37

    36 parts how to check criterion ice maker as 2) how to check ice maker ▷ good : plate operated up and down 1 time by rotation of the cam when pushing the button ▷ defective : all situations except upper ice maker switch plate lever ice cam.

  • Page 38

    37 1) unscrew (1 points) to remove front pcb. 2) pull out 2 connector (8pin & 2pin) from front pcb ass’y. (do not hold only wires to pull out.) 3) unscrew (5 points) to remove front pcb. * follow the reverse order when assembling. ※ how to disassemble front pcb ass’y start power input to main pcb is...

  • Page 39

    38 refer to error display in operation and function start change the comp. Change temp-fuse y n n y n y y n y n change olp/ptc change the defective motor change main pcb check lead wire change the defrost heater. Check ice formation on eva. And if refrigerant leak is found, repair it. N n y y y n n ...

  • Page 40

    39 (1) remove foods. (2) remove f draw case & f case in freezer compartment. Removing and replacing freezer parts 1) disassembling f door procedure pull up f case and remove pull up f draw case and remove push lock(both side) and pull forward f door and remove f door as 2) assembling f door procedur...

  • Page 41

    40 * pull forward top of f louver. * remove the screw (3ea) of fixture f motor a. * remove the screw cap (2ea) on the f-louver a with a flat tip driver. Removing and replacing freezer parts * strongly pull out fan blade and remove. And separate motor. * remove screws (2ea) of f-louver a. * separate ...

  • Page 42

    41 removing and replacing freezer parts * remove screws(2ea) of eva. 5) disassembling r fan as procedure * remove screws(3ea) of fixture r motor b. * remove housing r fan as. * pull forward r fan as. * separate r fan as. 6) disassembling eva as & accessory procedure r defrost heater & temp fuse scre...

  • Page 43

    42 reassemble the door. Start explain not to open doors too frequently. Y n n remove the gap. Wipe out dews on the louver surface and run the refrigerator again. Y n y y y n n make enough distance between heat appliances and refrigerator. Y n 8-2-2. Ice formation on f-louver dews are formed on the g...

  • Page 44

    43 change the lamp ass’y. Start repair the f-door switch. Check the f-door switch connection. Y n n y change of f lights change of f door switch * remove 2 screws of light cover. * unscrew 2 points. * pull out connector from f-lamp ass’y. * insert a flat tip screw driver into a gap of door switch to...

  • Page 45

    44 8-3. Refrigerator compartment solve error code problem, if any. Start y n n y n n y y change the r-fan motor. Change the main pcb. Check the wirings. Explain not to place foods close to r-sensor or cold air spout. Explain not to open doors unnecessarily or frequently. N y n y y refer to “freezing...

  • Page 46

    45 removing and replacing refrigerator parts 1) disassembling r door procedure * remove cap screws *t by ‘-’ driver. * remove screws (1ea) of clip and remove the clip. * disconnect housing and water hose. * remove bolt(1ea) of hinge *t and remove the hinge *t. * pull up the door and remove the door....

  • Page 47

    46 removing and replacing refrigerator parts * separate cover multi duct with insulator. * remove tape. * separate damper 2) disassembling multi-duct procedure insulator c * separate insulator d. * separate insulator c. * sensor for r room..

  • Page 48

    47 * remove the water filter cover * unscrew 2 points. ① ② ③ change the lamp ass’y. Start repair the r-door switch. Check the r-door switch connection. Y n n y r lamp ass’y is brocken? Connection of r door switch is ok ? 8-3-2. Disconnection / breaking of refrigerator lights wires change of r lights...

  • Page 49

    48 reassemble the doors. Start explain not to open doors unnecessarily. Y y repair to eliminate the gap. Make enough distance between the appliances and refrigerator. Advise to cool down foods, wrap or cover foods with much water before storing in the compartment. Repair and change r-motor. Y n y y ...

  • Page 50

    49 start level the refrigerator by adjusting wheels. ☞ refer to user’s guide and svc manual. Y n set it right. Y n change the rubber absorber. Y n attach a restrainer on the comp. Head to reduce vibration and high frequency noise. Y n change the compressor. Remarks ● compressor sound is somewhat nor...

  • Page 51

    50 start attach an absorber gum on the capillary tube. N y apply a gum on the accumulator. Y n apply a gum on the accumulator. Y n fasten the evaporator in f- compartment tightly against touching (liner) surfaces. N y explain refrigerator work mechanism and sound to the users or customers. Remarks ●...

  • Page 52

    51 troubleshooting of evaporator sound 1. Hiss sound from capillary tube 1) “i” tube is used to connect the capillary tube and evaporator. (2 welding points : ①, ②) 2. Shaking or trembling sound of evaporator 2) when such a sound is made, attach a absorber on the tube including 2 welding points. 1) ...

  • Page 53

    52 remarks ● the fan is sending out cold air to circulate it through the compartments. When the air is touching the surface of louver or liner wall, such sound can make. Start change the fan. N y set it right not to touch. Y n set it right not to move. Y n change the motor assembly. N y explain to t...

  • Page 54

    53 remarks ● refrigerant is erupting rapidly from the compressor to circulate pipes, so pipe shaking noise can make to some degree. ● in case compressor vibration is sent to a pipe directly, apply vibration absorber rubbers to welding points of the pipe and comp. Or to a much bent point on the pipe....

  • Page 55

    54 door switch is soaked with water or there is water in the switch ? Pcb input is ok ? Start change the door switch. N y repair any disconnection of wires and defective door switch. Y connector insertion to main pcb is ok ? Repair the defective connection. Y door switch itself is ok ? N change the ...

  • Page 56

    55 9-1. Summary of heavy repair * installation should be conducted in accordance with the standard installation procedure. (leave space of more than 5 cm from the wall for compressor compartment cooling fan mounted model.) transportation and installation * copper brush, rag, tool box * remove flux f...

  • Page 57

    56 1) nitrogen only should be used when cleaning inside of cycle pipes inside and sealing. 2) check leakage with an electronic leakage tester. 3) be sure to use a pipe cutter when cutting pipes. 4) be careful not the water let intrude into the inside of the cycle. Others. 1) weld under nitrogen atmo...

  • Page 58

    57 1. Removal of residual refrigerant. Precautions items 9-3. Practical work for heavy repair 2. Nitrogen blowing welding. ※ keypointing welding without nitrogen blowing produces oxidized scales inside a pipe, which affect on performance and reliability of a product. 1) remove residual refrigerant m...

  • Page 59

    58 * pipe connection connect a red hose to the high pressure side and a blue hose to the low pressure side. * vacuum sequence open ①,② valves and evacuate for 40 minutes. Close valve ①. 3.Vacuum degassing. Precautions items * charging sequence 1) check the amount of refrigerant supplied to each mode...

  • Page 60

    59 precautions items 4) refrigerant charging charge refrigerant while operating a compressor as shown above. 5) pinch a charging pipe with a pinch-off plier after completion of charging. 6) braze the end of a pinched charging pipe with copper brazer and take a gas leakage test on the welded parts. 4...

  • Page 61

    60 9-5. Brazing reference drawings. ▶ welding point copper welding (ag 5%) 7 points 3 points silver welding (ag 35%) ▶ flow of refrigeration cycle compress or pipe co nn. B hot. Pipe w ire con. Pipe dr yer capil lar y t ube evaporator accumulator pipe suctio n c onn suction pipe high low.

  • Page 62

    61 9-6. Dispenser water flow.

  • Page 63

    A01 - assy cab pre rfs-701dtu 1 a02 3012601201 handle cab cover*l pp 1 a03 3012601301 handle cab cover*r pp 1 a04 3013226500 hose i/maker tube as rfs-702etu 1 a05 3012537400 guide cab w/tube a as l1700(orange) 1 a06 3001428610 cover guide cab w/tube as rfs-702etu 1 a07 3012931500 hinge *t *l as rfs-...

  • Page 64

    B01 3010360500 base comp as rfs-701dtu 1 b02 3010101600 absorber comp nbr 4 b03 3012759900 harness earth comp fru-745 1 b04 3956180910 egx80hlc 115~127v/60hz b05 3956186980 lq86laem 220~240v/50hz b05 3956169m40 lq69ladm 220v 60hz b06 3016002500 comp washer sk-5 t0.8 3 b07 3018132600 switch p tsd as ...

  • Page 65

    C06 3012032600 fixture r motr as rfs-702etu 1 c06 a 3015920200 motor r as 11 or impeller 1 c06 b 3012029700 fixture motr r b pp 1 3012824100 ac110~127v,7w 1 3012824110 ac220~240v,7w c07 3018928100 louver f as rfs-702etu 1 c07 a 3018927500 louver f hips 1 c07 b 3012029400 fixture f motr a pp 1 c07 c ...

  • Page 66

    C01 3001439200 cover multi duct as rfs-701dtu 1 c01 a 3013379900 insu multi duct a f-ps 1 c01 b 3016767200 damper as du24-113 1 c01 c 3013380000 insu multi duct b f-ps 1 c01 d 3013377300 insu multi duct d f-ps, t2.5xw273xl640 1 c01 e 3001437300 cover multi duct hips 1 c01 f 3014808400 sensor r as pb...

  • Page 67

    E01 3011799c10 door f pre as rfs-702etu 1 e02 3012324700 gasket f dr as pvc-s 1 e03 3012228800 frame f draw rail *l as rfs-702etu 1 e03 a 3012201400 frame f draw rail*l sas rfs-702etu 1 e03 b 3012225100 frame f draw dr rail*l secc+paint(wh) 1 e03 c 3010402100 body f draw rail*l as h53 l508 1 e04 301...