Hisense RC-70WS4S Service Manual
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Hisense RC-70WS4S Service Manual

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R efrigerator
S ervice Manual
M o del:R C-70 W S 4 S(BC D-535 W)

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Questions and answers

Mike
February 8, 2025

Water is leaking out the bottom of the fridge when I fill the in fridge water container

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1 comments:
Mr. Anderson
May 14, 2025

Possible causes for water leaking from the bottom of the Hisense RC-70WS4S fridge when filling the in-fridge water container include:

- The water line may be crushed, kinked, or obstructed. Ensure the water line is free and clear.
- The water tank might be frozen if the refrigerator temperature is too low. Adjust to a warmer setting.
- The water filter might not be properly installed. Check and reinstall it correctly.

These issues can prevent proper water flow and cause leaks.

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Summary of Contents for Hisense RC-70WS4S

  • Page 1 R efrigerator S ervice Manual M o del:R C-70 W S 4 S(BC D-535 W)

  • Page 2: Table Of Contents

    Contents 1.Warnings and precautions for safety ........2 2.Appearance and structure .............3 2.1 View of the appliance 2.2 Wind channel structure ............4 2.3 Evaporator structure ..............6 ............7 2.4 Compressor room structure ..............8 3.Basic parameters 4.Operation and functions 4.1 Display controls ..............9 4.2 Defrost mode ...............13 4.3 Compulsory defrost mode...

  • Page 3: Warnings And Precautions For Safety

    1.Warning and precautions for safety 1 Warning and precautions for safety 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 the power whenever replacing and repairing electric components.

  • Page 4: Appearance And Structure

    2.Appearance and structure 2 Appearance and structure 2.1 View of the appliance Note:Due to unceasing modification of our products,your refrigerator may be slightly differant from this Services Manual,but its functions and using methods remain the same.

  • Page 5: Wind Channel Structure

    2.Appearance and structure 2.2 Wind channel structure Wind input Freezer Refrigerator Air return...
  • Page 6 2.Appearance and structure 2.2 Wind channel structure Freezer Refrigerator...

  • Page 7: Evaporator Structure

    2.Appearance and structure 2.2 Evaporator structure Capillary Accumulator Sensor Evaporator Fuse Heater...

  • Page 8: Compressor Room Structure

    2.Appearance and structure 2.2 Compressor room structure Dry filter Power cord Compressor Evaporation dish Water valve...

  • Page 9: Basic Parameters

    3.Basic parameters 3 Basic parameters Content Unit Value Voltage / frequency V/Hz 220-240/50 Rated current Rated input power Defrost power Net capacity Net capacity fridge compartmen (Fridge/Chill) Net capacity freezer compartment Energy efficiency class Climate class (SN=10~32°C, SN、N、ST、T N=16~32°C, ST=16~38°C, T=16~43°C) Refigerator room temperature °C Freezer room temperature...

  • Page 10: Operation And Functions

    4.Operation and functions 4 Operation and functions 4.1 Display controls Use your appliance according to the following control regulations, your appliance has the corresponding functions and modes as the control panels showed in the pictures below. When the appliance in powered on for Caution! When you set a the first time, the backlighting of the temperature, you set an average...
  • Page 11 4.Operation and functions...
  • Page 12 4.Operation and functions...
  • Page 13 4.Operation and functions...

  • Page 14: Defrost Mode

    4.Operation and functions 4.2 Using the appliance...
  • Page 15 4.Operation and functions...
  • Page 16 4.Operation and functions...
  • Page 17 4.Operation and functions 207~689...

  • Page 18: Compulsory Defrost Mode

    4.Operation and functions 4.3 Defrost mode 4.3.1 Start condition When compressor accumulated running time reach the setting point (depends on the environment temperature),it will enter defrost mode automatically. 4.3.2 Defrost flow Start Compressor stops Evaporator fan stops Damper stops Defrost heater works Evaporator temperature reach the setting point,exit defrost mode Defrost heater stops...
  • Page 19 4.Operation and functions 4.4 Compulsory Defrost mode 4.4.1 Start condition Keep refrigerator door and freezer door closed for 10 minutes after power-on,touch and hold “Ice off” button and “Freezer” button at the same time for 5 seconds,it will enter compulsory defrost mode after a long buzzing sound.

  • Page 20: Error Display

    4.Operation and functions 4.5 Error display 4.5.1 Error code Code Display area problem Refrigerator temperature Refrigerator sensor display area malfunctions Freezer temperature Freezer sensor display area malfunctions Freezer temperature Defrost sensor display area malfunctions Freezer temperature Environment sensor display area malfunctions Freezer temperature Ice maker sensor...
  • Page 21 4.Operation and functions 4.5 Error display 4.5.2 Checking method 4.5.2.1 Environment sensor error Start Is the sensor connecting Repair the wiring wiring open circuit or short circuit? Change the display panel...
  • Page 22 4.Operation and functions 4.5.2.2 Other sensors error Start Does the sensor connector Plug the terminal well plug well? Is the sensor connecting Repair the wiring wiring open circuit or short circuit? Change the sensor Is the sensor OK? Change the mainboard...
  • Page 23 4.Operation and functions 4.5.2.2 Other sensors error Note: 1.Refrigerator sensor corresponding pin No.8 and No.12 on CN5 connector of mainboard. 2.Freezer sensor corresponding pin No.9 and No.12 on CN5 connector of mainboard. 3.Evaporator sensor corresponding pin No.10 and No.12 on CN5 connector of mainboard.
  • Page 24 4.Operation and functions 4.5.2.3 Ice maker error Eb error: 1.Check the connecting wiring between mainboard and ice maker (corresponding pin No.7~10 on CN4 connector of mainboard,as the drawing below) and repair if it is broken. 2.Input 12V power to pin No.7 and No.8 on CN4 connector of mainboard,check the ice maker can positive rotating(Red wiring connect power,white wiring connect GND) and negative rotating (white wiring connect power,red wiring connect GND) normally or not.
  • Page 25 4.Operation and functions 4.5.2.4 Communication error Start Is the connecting wiring Repair the wiring between display panel and mainboard broken? Change the display Is the display panel OK? panel Change the mainboard Note: The display panel corresponding pin No.5~8 on CN7 connector of the mainboard,as the drawing below.

  • Page 26: Troubleshooting

    5.Troubleshooting 5.1 Common problem and checking Problem Possible cause & Solution Check whether the power cord is plu gg ed into the power outlet p roperly Check the fuse or circuit of your power su pp ly, replace if necessary Ap pliance is not worki ng correctly The ambient temperature is too l ow.
  • Page 27 5.Troubleshooting Problem Possible cause & Solution Check that the air outlets are not blocked by food and ensure food A laye r of frost is placed within the appliance to allow sufficient ventilation. Ensure occu rs i n the that door is fully closed. To remove the frost,please refer to comp artment cleaning and care chapter.
  • Page 28 5.Troubleshooting Problem Poss ible c ause & Solution Is the water line connected and the water valve open? Has the water line been crushed or kinked? Make sure the water lin e is free and cle ar of any obstruction. Wate r dispenser is not Is the water tank frozen because the refrigerator functioning...

  • Page 29: Faulty Start

    5.Troubleshooting 5.2 Faulty start Start Plug the power cord Has the power cord plugged well into the power outlet? Plug the terminals Are mainboard terminals well plugged well? Change the Is mainboard output mainboard power OK? Change the Is the compressor OK? compressor Check connectors and sensors...

  • Page 30: Refrigeration Failure

    5.Troubleshooting 5.3 Refrigeration failure 5.3.1 Freezer compartment Start Any error code? Refer to “4.5 Error dispaly” chapter Change the Is the compressor Does compressor compressor work? Is the PTC starter Check the or overload protector mainboard Change the PTC starter or overload protector Change the Does Fan motor...
  • Page 31 5.Troubleshooting 5.3 Refrigeration failure 5.3.1 Freezer compartment Do doors open Explain not to open frequently? doors frequently Is Temp. fuse OK? Change the Temp. fuse Is defrost heater Change the defrost heater Is there ice blockage on evaporator? Check ice formation on Eva.
  • Page 32 5.Troubleshooting 5.3 Refrigeration failure 5.3.2 Refrigerator compartment Start Any error code? Solve error code problems Change the Does the damper work? Is the damper OK? damper Change the Is wiring connection mainboard Is the sensor OK? Check the wiring Change the sensor and check connector Is freezer compartment Refer to 5.3.1...

  • Page 33: Thick Frost In Freezer Compartment

    5.Troubleshooting 5.4 Thick frost in freezer compartment Start Gap between Is dew foramed on the Change the door gasket and door gasket surface? gasket cabinet? Reassemble the Is door hanged door down? Do doors open frequently? Explain not to open doors too frequently Is the appliance too close to heat...

  • Page 34: Dew In Refrigerator Compartment

    5.Troubleshooting 5.5 Dew in refrigerator compartment Start Gap between Change the door Is dew foramed on the gasket and gasket door gasket surface? cabinet? Is the door Reassemble the hanged down? door Does the door open too frequently? Explain not to open doors too frequently Is the appliance too close to heat sources?

  • Page 35: Low Temperature Of Vegetable Vase

    5.Troubleshooting 5.6 Low temperature of vegetable vase Start Is refrigerator temperature setting too cold? Counsel to use warmer temperature setting Is the damper OK? Change the damper Is the mainboard Check the mainboard output power OK? Change the sensor Is the sensor OK? Check the sensor connection and repair...

  • Page 36: Breaking Of Light

    5.Troubleshooting 5.7 Breaking of light Start Is the light disconnected or broken? Change the light Is the door switch OK? Change the door switch Check the door switch connection and repair...

  • Page 37: Noise

    5.Troubleshooting 5.8 Noise 5.8.1 Compressor noise Start Is the appliance leveled? Level the appliance by adjusting the bottom feet Are the adjustable bottom feet broken? Change the adjustable bottom feet Is the noise from compressor itself? Change the compressor Add a rubber absorber to reduce the vibration...
  • Page 38 5.Troubleshooting 5.8 Noise 5.8.2 Refrigerator flowing noise Start Is there water flowing or hiss sound from the appliance? Attache a gum absorber on the capillary tube Is there hiss or sizzling sound from refrigerant when comp. starts/stops? Attach a gum absorber on the accumulator Is there sound from freezer compartment when compressor’s...
  • Page 39 5.Troubleshooting 5.8 Noise 5.8.3 Fan motor noise Start Is the fan damaged or transformed? Change the fan Is the fan touching surround? Set the fan right,avoid to touch surround Is the fan moving or shaking? Fasten the fan motor Sound from fan itself or vibration when working? Change the fan motor Explain to the customer...
  • Page 40 5.Troubleshooting 5.8 Noise 5.8.4 Pipe noise Start Are pipes touching in the compressor room? Separate the touching pipes Does evaporation dish make noise by touching the pipe? Check the cushion between pipe and evaporation dish and repair Is pipe itself shaking strongly? Move or change the points of vibration absorber on pipes to reduce shaking...

  • Page 41: Circuit And Checking

    6.Circuit and checking 6.1 Circuit diagram...

  • Page 42: Mainboard

    6.Circuit and checking 6.2 Mainboard 6.2.1 Checking method If the problem is probably caused by the mainboard,change it directly to confirm. 6.2.2 Removing the mainboard 1.Unplug the appliance 2.Remove the screws of electric box cover by screwdriver,as picture 1. 3.Remove the electric box cover,as picture 2. 4.Unplug the terminals on the mainboard,as picture 3.

  • Page 43: Compressor

    6.Circuit and checking 6.3 Compressor 6.3.1 Basic parameters Input voltage/frequency:220-240V/50Hz Imput power:≤64.2*115% W 6.3.2 Checking method 1.Compressor will start 10 seconds after power-on,if it starts unsuccessfully,remove the electric box cover and check. 2.Check the connecting wiring between compressor and mainboard and repair if it is broken.
  • Page 44 6.Circuit and checking 6.3.3 Removing the PTC starter and overload protector 1.Unplug the appliance 2.Remove the screws of protector box by screwdriver,as picture 1. 3.Pry up the protector box from top by screwdriver,as picture 2. 4.Unplug the overload protector,as picture 3. 5.Unplug the PTC starter,as picture 4.

  • Page 45: Fan Motor

    6.Circuit and checking 6.4 Fan motor 6.4.1 Basic parameters Rated voltage:DC12V Rated input power:2.5W 6.4.2 Checking method 1.Check the connecting wiring of fan motor is well or not,repair if it is broken.The fan motor corresponding pin No.13~15 on CN4 connector of mainboard,as the drawing below. 2.Pin No.14 connect 12V power and pin No.13 connect GND,if the fan motor works normally,change the mainboard;If not,change the fan motor.
  • Page 46 6.Circuit and checking 6.4.3 Removing the fan motor 1.Unplug the appliance 2.Remove the screws of freezer wind channel component by screwdriver,as picture 1. 3.Remove the wind channel component and unplug the terminals,as picture 2. 4.Remove the screw of the wind channel component by screwdriver, as picture 3.

  • Page 47: Damper

    6.Circuit and checking 6.5 Damper 6.5.1 Basic parameters Rated voltage:DC12V Rated current:60mA 6.5.2 Checking method 1.Check the connecting wiring of the damper is well or not,repair if it is broken.The damper corresponding pin No.1~6 on CN6 connector of mainboard,as the drawing below. 2.The damper will turn on and off for one time after power-on,if not, change the mainboard first and change the damper if problem remains.
  • Page 48 6.Circuit and checking 6.5.3 Removing the damper 1.Unplug the appliance 2.Remove the screws of refrigerator wind channel component by screwdriver,as picture 1. 3.Remove the wind channel component and unplug the terminals,as picture 2. 4.Separate the wind channel cover and foam,as picture 3. 5.Remove the sponge and adhesive paper on the foam,as picture 4.

  • Page 49: Light

    6.Circuit and checking 6.6 Light 6.6.1 Basic parameters Rated voltage:DC12V Rated power:2W 6.6.2 Checking method 1.Check the connecting wiring between light and mainboard is well or not,repair if it is broken.Refrigerator light corresponding pin No.1 and No.2 on CN7 connector of mainboard,freezer light corresponding pin No.1 and No.3,ice maker light corresponding pin No.1 and No.4, as the drawing below.
  • Page 50 6.Circuit and checking 6.6.3 Removing the light 1.Unplug the appliance 2.Pry up the light cover from the buckles by screwdriver,as picture 1. 3.Remove the light cover,as picture 2. 4.Pry up the light from the buckles by screwdriver,as picture 3. 5.Unplug the terminal of the light,as picture 4. Picture1 Picture2 Picture3...

  • Page 51: Door Switch

    6.Circuit and checking 6.7 Door switch 6.7.1 Basic parameters Load voltage:DC24V Load current:0.05A 6.7.3 Checking method 1.Check the connecting wiring of door switch is well or not,repair if it is broken.Refrigerator door switch corresponding pin No.4 and No.6 on CN4 connector of mainboard,freezer door switch corresponding pin No.4 and No.7,as the drawing below.

  • Page 52: Temperature Fuse

    6.Circuit and checking 6.8 Temperature fuse 6.8.1 Basic parameters Max fusing-off temperature:72℃ Load voltage:250V Load current:10A 6.8.2 Checking method Use a multimeter to measure resistance between the two terminals of the fuse,if it is open circuit,change the fuse.
  • Page 53 6.Circuit and checking 6.8.3 Removing the temperature fuse 1.After removing the freezer wind channel component,unplug the terminals,as picture 1. 2.Remove the screws of evaporator by screwdriver,as picture 2. 3.Separate the evaporator component from the cabinet and remove the foams at left side and right side,as picture 3. 4.Cut the self locking ties that fastening the temperature fuses by knife and then remove the fuses,as picture 4.

  • Page 54: Defrost Heater

    6.Circuit and checking 6.9 Defrost heater 6.9.1 Basic parameters Rated voltage:AC220V Rated power:220W 6.9.2 Checking method 1.Enter compulsory defrost mode,use a multimeter to measure the voltage between pin No.1 and No.9 on XP7 connector of the mainboard,if the voltage doesn’t equal to electric supply power,it means the heater is broken,change it.
  • Page 55 6.Circuit and checking 6.9.3 Removing the defrost heater 1.After removing the freezer wind channel component,unplug the terminals,as picture 1. 2.Remove the screws of evaporator by screwdriver,as picture 2. 3.Separate the evaporator component from the cabinet and remove the foams at left side and right side,as picture 3. 4.Cut the self locking ties that fastening the heater by knife,as picture 4.

  • Page 56: Ice Maker

    6.Circuit and checking 6.10 Ice maker 6.9.1 Checking method Refer to “4.5 Error display”chapter. 6.9.2 Removing the ice maker 6.9.2.1 Removing the ice bucket 1.Raise the ice bucket up,as picture 1. 2.Pull the ice bucket slantingly downwards,as picture 2. 3.Pull the ice bucket out,as picture 3. Picture1 Picture2 Picture3...
  • Page 57 6.Circuit and checking 6.9.2.2 Removing the water intake 1.Pull the front cover out slantingly upwards,as picture 1. 2.Pull the water intake slantingly upwards,as picture 2. 3.Remove the two buckles of the water intake,as picture 3. 4.Take out the water intake,as picture 4. Picture1 Picture2 Picture3...
  • Page 58 6.Circuit and checking 6.9.2.3 Removing the ice maker and holder 1.Remove the screws of the ice maker holder by screwdriver,as picture 1. 2.Unplug the terminal of the ice maker,as picture 2. 3.Remove the screws of the ice maker by screwdriver,as picture 3. 4.Remove the wiring,as picture 4.
  • Page 59 6.Circuit and checking 6.9.2.4 Removing the ice crushing motor 1.Remove the screws of the motor by screwdriver,as picture 1. 2.Remove the coupling,as picture 2. 3.Remove the screws of the motor cover by screwdriver,as picture 3. 4.Remove the cover and pull out the motor and remove it,as pictire 4. Picture1 Picture2 Picture3...
  • Page 60 6.Circuit and checking 6.9.2.4 Removing the ice dispenser 1.Pull out the water tube,as picture 1. 2.Unplug connecting terminal,as picture 2. 3.Remove the screws by screwdriver,as picture 3. 4.Pry up the ice dispenser at the buckles,as pictire 4. 5.Pull out the ice dispenser,as picture 5. 6.Unplug the motor terminal and remove the ice dispenser,as picture6.
  • Page 61 6.Circuit and checking 6.9.2.4 Removing the water valve 1.Remove the screws of the water valve by screwdriver,as picture 1. 2.Pull out the water valve,as picture 2. 3.Unplug the connecting terminal,as picture 3. 4.Remove the water tube connector,as pictire 4. 5.Remove the water tube,as picture 5. 6.Pull out the water valve,as picture6.

  • Page 62: Refrigeration System

    7.Refrigeration system repair 7.1 Refrigeration system The refrigerator system is single cycle wind cooling system: Compressor discharges high temperature high pressure R600a gas refrigerant Refrigerant enters evaporation pipe,condenser and anti-condensation pipe one after another, then becomes middle temperature high pressure liquid after condensation Refrigerant enters dry filter,water and imperity will be filtrated...
  • Page 63 7.Refrigeration system repair 7.1 Refrigeration system Anti-condensation pipe Air return pipe Condenser Condenser Finned evaporator Dry filter Compressor Evaporation pipe...

  • Page 64: Summary Of Repair

    7.Refrigeration system repair 7.2 Summary of repair...

  • Page 65: Regulation Of Repair

    7.Refrigeration system repair 7.3 Regualation for repair...

  • Page 66: Practical Work Of Repair

    7.Refrigeration system repair 7.4 Practical work for repair...
  • Page 67 7.Refrigeration system repair 7.4 Practical work for repair...

  • Page 68: Brazing Reference Drawing

    7.Refrigeration system repair 7.5 Brazing reference drawing Anti-condensation pipe Condenser Capillary Air return pipe Dry filter Connecting pipe Finned Evaporation Connecting pipe evaporator pipe Compressor Refrigearnt flowing direction Welding points...

This manual is also suitable for:

Bcd-535 w

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