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Samsung DW80H9940US/AA Service Manual

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SERVICE
DISHWASHER
DISHWASHER
Model Name : DW80H9970US
DW80H9950US
DW80H9940US
DW80H9930US
Model Code : DW80H9970US/AA DW80H9970US/AC
DW80H9950US/AA DW80H9950US/AC
DW80H9940US/AA DW80H9940US/AC
DW80H9930US/AA DW80H9930US/AC
Manual
1. Safety Instructions
2.
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference
CONTENTS

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  Summary of Contents for Samsung DW80H9940US/AA

  • Page 1 DISHWASHER Model Name : DW80H9970US DW80H9950US DW80H9940US DW80H9930US Model Code : DW80H9970US/AA DW80H9970US/AC DW80H9950US/AA DW80H9950US/AC DW80H9940US/AA DW80H9940US/AC DW80H9930US/AA DW80H9930US/AC SERVICE Manual DISHWASHER CONTENTS 1. Safety Instructions 3. Disassembly and Reassembly 4. Troubleshooting 5. PCB Diagram 6. Wiring Diagram 7. Reference...
  • Page 2: Table Of Contents

    CONTENTS 1. Safety Instructions ..............1 1-1.
  • Page 3: Safety Instructions

    1. SAFETY INSTRUCTIONS 1-1. SAFETY INSTRUCTIONS FOR SERVICE ENGINEERS Warning Caution Warning Before Servicing ➢ same time. ➢ ➢ ➢ ➢ Safety Instructions _ 1...
  • Page 4 While Servicing ➢ parts. ➢ ➢ ➢ ➢ After Servicing ➢ ➢ ➢ 2 _ Safety Instructions...
  • Page 5 Caution Before Servicing ➢ ➢ ➢ ➢ During Servicing ➢ connections. ➢ moisture from it. ➢ Safety Instructions _ 3...
  • Page 6 After Servicing ➢ ➢ 4 _ Safety Instructions...
  • Page 7: Features

    2. FEATURES AND SPECIFICATIONS 2-1. FEATURES Features Description Remarks New Waterwall cleaning system gets dishes sparkling everytime Targeted wash for hard to clean pots and pans Wash smaller loads without wasting water Removable roll-up silverware tray for easy unloading Flexible design for more space Wash your dishes in less time Worry-free dishwashing...
  • Page 8: Specifications

    2-2. SPECIFICATIONS DW80H99**US Wash capacity 15 place settings Type Dishwasher Power Single-phased alternating current of 60Hz, 15A at 120V Used water pressure 20 ~ 120 psi (140 ~ 830 kPa) Wash type Waterwall Linear Wash & Rotating nozzle spray Dry type Air diffusion condensing dry system Power usage Main Pump : 96w (Waterwall operating), Heater : 1100w...
  • Page 9 2-3. COMPARING SPECIFICATIONS WITH EXISTING MODELS NEW MODEL MODEL Model DW80H9950US DW80H9970US DW80H9930US DW80F800UWS DW80F600UTS/UTB/UTW DW80H9940US Photo Frame Front Sensors 2-stage Programs Options...
  • Page 10 2-4. OPTIONS SPECIFICATIONS Photo Item Code Remarks...
  • Page 11: Disassembly And Reassembly

    3. DISASSEMBLY AND REASSEMBLY 3-1. TOOLS FOR REMOVAL AND REASSEMBLY Type ➊ ➋ ➌ ➍ 10mm ➎ * Preparation for parts replacement Caution Disassembly and Reassembly _ 9...
  • Page 12 3-2. PREPARATION FOR PARTS REPLACEMENT Warning Caution Before servicing, make sure to remove all items from inside of the dishwasher, including the wash racks. 3-3. REMOVING THE UPPER RACK (IF NEEDED) Step 1. Step 2. Step 3. 10 _ Disassembly and Reassembly...
  • Page 13 Part Figure Description Preparation: remove it. Main PBA Disassembly and Reassembly _ 11...
  • Page 14 Part Figure Description Preparation: Inverter PBA 12 _ Disassembly and Reassembly...
  • Page 15 Part Figure Description Preparation: Door outer (DW80H9950US/ DW80H9940US) Caution Disassembly and Reassembly _ 13...
  • Page 16 Part Figure Description Preparation: Door outer (DW80H9970US/ DW80H9930US) Caution 14 _ Disassembly and Reassembly...
  • Page 17 Part Figure Description Preparation: Panel control (DW80H9950US/ DW80H9940US) Disassembly and Reassembly _ 15...
  • Page 18 Part Figure Description Preparation: front. Panel control (DW80H9970US) 16 _ Disassembly and Reassembly...
  • Page 19 Part Figure Description Panel control (DW80H9970US) Disassembly and Reassembly _ 17...
  • Page 20 Part Figure Description Preparation: front. Panel control (DW80H9930US) 18 _ Disassembly and Reassembly...
  • Page 21 Part Figure Description Panel control (DW80H9930US) Preparation: Switch door Disassembly and Reassembly _ 19...
  • Page 22 Part Figure Description Preparation: Assy Case Vent Assy Dry Duct section. Assy Duct Condenser Duct Dry system 20 _ Disassembly and Reassembly...
  • Page 23 Part Figure Description Duct Dry system Disassembly and Reassembly _ 21...
  • Page 24 Part Figure Description Preparation: Caution Dispenser - slide 22 _ Disassembly and Reassembly...
  • Page 25 Part Figure Description Lever door Disassembly and Reassembly _ 23...
  • Page 26 Part Figure Description Flow meter Inlet Outlet Water Level < Assy case brake > Preparation: Assy Case Brake Caution Caution 24 _ Disassembly and Reassembly...
  • Page 27 Part Figure Description UPPER NOZZLE Preparation: MIDDLE NOZZLE LOWER NOZZLE WATER WALL Assy - Motion Disassembly and Reassembly _ 25...
  • Page 28 Part Figure Description Assy - Motion Caution 26 _ Disassembly and Reassembly...
  • Page 29 Part Figure Description Preparation: Assy Duct (Nozzle) Disassembly and Reassembly _ 27...
  • Page 30 Part Figure Description Preparation: to separate Drain Hose 28 _ Disassembly and Reassembly...
  • Page 31 Part Figure Description Preparation: section. Water Valve Caution Caution Disassembly and Reassembly _ 29...
  • Page 32 Part Figure Description Preparation: sensor connector. Cover base 30 _ Disassembly and Reassembly...
  • Page 33 Part Figure Description Preparation: Caution Frame front unit. Disassembly and Reassembly _ 31...
  • Page 34 Part Figure Description Preparation: Door Spring 32 _ Disassembly and Reassembly...
  • Page 35 Part Figure Description Preparation: Caution Assy Cover base Disassembly and Reassembly _ 33...
  • Page 36 Part Figure Description Preparation: Rear Leg + Adjust bar 34 _ Disassembly and Reassembly...
  • Page 37 Part Figure Description Preparation: Thermister Disassembly and Reassembly _ 35...
  • Page 38 Part Figure Description Preparation: Turbidity sensor Caution 36 _ Disassembly and Reassembly...
  • Page 39 Part Figure Description Preparation: Caution Circulation pump Disassembly and Reassembly _ 37...
  • Page 40 Part Figure Description Preparation: Base 38 _ Disassembly and Reassembly...
  • Page 41 Part Figure Description Preparation: Caution Ass’y Guide water Disassembly and Reassembly _ 39...
  • Page 42 Part Figure Description Preparation: Caution Motor AC drive & Switch micro Preparation: Caution 40 _ Disassembly and Reassembly...
  • Page 43 Part Figure Description Preparation: Drain pump(MOTOR BLDC PUMP) Caution Disassembly and Reassembly _ 41...
  • Page 44 Part Figure Description Preparation: sump. Sump Caution 42 _ Disassembly and Reassembly...
  • Page 45 3-4. CHECKPOINTS AFTER FINISHING SERVICE 1. Check the safety device 2. Use authentic Samsung replacement parts only 3. Handling wires 4. The state of screws and nuts 5. Remove foreign material 6. Check for water leakage 7. Check the power cable 8.
  • Page 46: Troubleshooting

    4. TROUBLESHOOTING 4-1. INFORMATION CODE 4-1-1. DW80H99 Code When occur Symptom Possible Causes - When the number of detected water supply pulses is less than 10 - The water supply pressure is low. - If an error has occurred when the number of detected water supply within 20 seconds after water is supplied.
  • Page 47 Code When occur Symptom Possible Causes - The touch button is out of order. - When the button is pressed and held for 30 continuous seconds - Normally working at washing mode or longer. - An object is on the touch button. - The touch button is out of order.
  • Page 48 Code When occur Symptom Possible Causes Condition 1) - When Main receives the Circulation pump error from the inverter, stop the drive the motor and restart again. If Main receive the motor error 11 times, turn off the motor for 5 minutes. At the third rest time, Error occurs. (When an error occurs, Heater is stopped immediately.
  • Page 49 4-2. SERVICE INSPECTION MODE Press the 'Auto' + 'Delicate' + 'Power' buttons at the same time for two seconds to enter Service Inspection Mode. You can change the mode by pressing the Normal button again. To advance to the next mode, press the normal button. If you want to activate a mode while operating the dishwasher, the door must be closed.
  • Page 50 Item Related Parts Symptoms Description - Runs the circulation motor(BLDC: 2600 RPM, AC motor: Low). A nozzle does not n3 (nC) - If the normal water level is detected, “nC” is displayed. If the low water level is detected, “n3” is displayed. inject water.
  • Page 51 Item Related Parts Symptoms Description 1. Lower Key : Lower Led On Dry Fan(Auto LED) → Dry Actuator(Normal LED) → Dispenser Actuator(Heavy LED) → Off 2. Booster left Key : Booster left LED On Drain pump (Auto LED) → Circulation Motor(low) / BLDC motor (Normal LED) → Circulation Motor(low) / BLDC motor (Heavy LED) →...
  • Page 52 Error Type Error mode Checking method Corrective actions 1. Check whether the faucet is open. - Open the faucet. - After wait until the water supply resumes and turn off the power. 2. Check whether the water supply has been cut off. After the water supply resumes, turn on the power.
  • Page 53 Error Type Error mode Checking method Corrective actions 1. Check whether there is any foreign material in the Drain - Remove the foreign material in the Drain Hose, Drain Pump, drain hole inside Hose, Drain Pump, drain hole inside sump. sump.
  • Page 54 Error Type Error mode Checking method Corrective actions 1. Check whether there is any foreign material in the - Remove the foreign material in the Circulation Hose and Circulation Pump. Circulation Hose and Circulation Pump. 2. Check the connections for the Circulation Pump connector. - Reconnect the Circulation Pump connector.
  • Page 55 Error Type Error mode Checking method Corrective actions 1. Check the connections of the Heater connectors. - Reconnect the Heater connectors. 2. Check the resistance between both ends of the Heater. : Check the resistance between both ends of the Heater directly, or check the resistance between the red wire of the Heater Relay and the black and yellow wires of the Power - Faulty: Replace the Heater.
  • Page 56 Error Type Error mode Checking method Corrective actions - Reconnect the Distributor Motor and Micro Switch connectors. 1. Check the connections for the Distributor Motor and Micro Switch connectors. 2. Check whether the coil in Distributor Motor is conductive. : Remove the connectors before measuring. - Faulty: Replace the Distributor Motor.
  • Page 57 Error Type Error mode Checking method Corrective actions 1. Check the connections for the Motor vane and Sensor - Reconnect the Distributor Motor and Micro Switch connectors. vane connectors. 2. Check whether the coil in Motor vane is conductive. Check the resistance between the Red and Black wire(CCW) Check the resistance between the White and Black wire(CW).
  • Page 58 Error Type Error mode Checking method Corrective actions 2. Check whether the Water Valve operates normally. Use - See “4E Error”. d07 Display mode. error 3. Check whether water is supplied (even small amounts) in - Remove foreign material from the Water Valve. the intervals when the Water Valve is not operating.
  • Page 59 Error Type Error mode Checking method Corrective actions 1. Check the connections between MAIN PBA CN402 - Reconnect the MAIN PBA CN402 connector and SUB PBA CN101 connector connector and Display Control Module CN101 connector 2. That Error is produced continuously after method 1 - Replace: Sub-Wire Main-Sub PBA Communication...
  • Page 60 Error Type Error mode Checking method Corrective actions 1. Check the connections for the power plug. - Reconnect the power plug. 2. Check the voltage of the power outlet. - Connect to a 120V power source. Normal : 120V 3. Check Power Key on state. - Try to touch the Power key.
  • Page 61 Error Type Error mode Checking method Corrective actions 1. Check the connections for the Display LED connector part. - Reconnect the connectors for Display LED. Display error None 2. Check the Display LED. - Faulty: Replace the Display LED and Sub PBA. 1.
  • Page 62 Error Type Error mode Checking method Corrective actions 1. Check whether detergent is inserted into the dispenser. - Check whether there is detergent in the Dispenser. 2. Check the connections for the Dispenser connector. - Reconnect the Dispenser connector. - Faulty: Replace the Dispenser. 3.
  • Page 63: Pcb Diagram

    5. PCB DIAGRAM 5-1. MAIN PCB Description Description Description Sensing Sensing Dry Fan motor PCB Diagram _ 61...
  • Page 64 5-2. INVERTER PBA Description Drain Pump Output Writing Pin 62 _ PCB Diagram...
  • Page 65 5-3. NEW PBA - DETAILED SPECIFICATIONS AND DESCRIPTIONS FOR CONNECTORS AND RELAY TERMINALS (MAIN PBA) PCB Diagram _ 63...
  • Page 66 5-4. NEW PBA - DETAILED SPECIFICATIONS AND DESCRIPTIONS FOR CONNECTORS AND RELAY TERMINALS (INVERTER PBA) 64 _ PCB Diagram...
  • Page 67: Wiring Diagram

    6. WIRING DIAGRAM 6-1. WIRING DIAGRAM ■ Reference Information Abbreviated word Meaning Abbreviated word Meaning Wiring Diagram _ 65...
  • Page 68: Reference

    7. REFERENCE 7-1. MODEL NUMBER NAMING RULES 2013 Super Premium 2014 Premium Counter-top Premium Counter Top 66 _ Reference...
  • Page 69 7-2. MODEL NUMBER NAMING RULES SR : DW : 8 : Premium BB : WD : SL : SD : A~Z : 1 : Compact Premium2 Premium1 Reference _ 67...
  • Page 70 7-3. MODEL NUMBER NAMING RULES DW : S :STSS 68 _ Reference...
  • Page 71 7-4. TERMINOLOGY Circulation Motor Drain Pump Heater Vent Fan Flow Meter Distributor Dispenser Tub Assy Sump Assy 10. Tub Front Assy 11. Base Assy 12. Basket Assy 13. Top/Middle/Lower Nozzles 14. Case Brake 15. Door Lock Switch 16. Child Lock/Unlock Reference _ 69...
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