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Samsung DMT800 SERIES Service Manual

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SERVICE
DISHWASHER
Refer to the service manual in the GSPN (see the rear cover) for the more information.
DMT800RHS/XAA DMT800RHS/XAC
DMT800RHB/XAA DMT800RHB/XAC
DMT800RHW/XAA DMT800RHW/XAC
DMT700RHS/XAA DMT700RHS/XAC
DMT700RHB/XAA DMT700RHB/XAC
DMT700RHW/XAA DMT700RHW/XAC
DMT400RHS/XAA DMT400RHS/XAC
DMT400RHB/XAA DMT400RHB/XAC
DMT400RHW/XAA DMT400RHW/XAC
Manual
CONTENTS

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Table of Contents
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  Summary of Contents for Samsung DMT800 SERIES

  • Page 1: Table Of Contents

    DMT800RHS/XAA DMT800RHS/XAC DMT800RHB/XAA DMT800RHB/XAC DMT800RHW/XAA DMT800RHW/XAC DMT700RHS/XAA DMT700RHS/XAC DMT700RHB/XAA DMT700RHB/XAC DMT700RHW/XAA DMT700RHW/XAC DMT400RHS/XAA DMT400RHS/XAC DMT400RHB/XAA DMT400RHB/XAC DMT400RHW/XAA DMT400RHW/XAC SERVICE Manual DISHWASHER CONTENTS 1. Safety Instructions 2. Features and Specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. PCB Diagram 6. Wiring Diagram 7.
  • Page 2: Safety Instructions

    1. Safety Instructions 1. Safety Instructions 1-1. Safety Instructions for Service Engineers Make sure to observe the following instructions to operate the product correctly and safely and prevent possible accidents and hazards while servicing. Two types of safety symbols, Warning and Caution, are used in the safety instructions. Warning Hazards or unsafe practices that may result in severe personal injury or death.
  • Page 3 1. Safety Instructions While Servicing Check if the power cable is damaged, flattened, cut or otherwise degraded. If faulty, replace it immediately. Failing to do so may result in electric shock or fire. Completely remove any dust or foreign material from the housing, wiring and connection parts.
  • Page 4 1. Safety Instructions Caution Before Servicing Do not sprinkle water onto the dishwasher directly when cleaning it. This may result in electric shock or fire, and may shorten the product lifetime. Do not place any containers with water on the dishwasher. If the water is spilled, it may result in electric shock or fire.
  • Page 5 1. Safety Instructions After Servicing Check the assembled status of the parts. They must be the same as before servicing. Check whether the product is level with the floor. Check if there are any deformations in the sink. Check that the dishwasher is firmly installed to the sink. Vibrations can shorten the lifetime of the product.
  • Page 6: Features And Specifications

    Efficient noise control technology is used for the quietest Extremely quiet operation possible operation. Your new Samsung dishwasher will be quieter than ever. Cleaning the filter yourself is a thing of the past! This product Self-cleaning filter...
  • Page 7 2-2. Specifications Wash capacity 14 place settings Type Dishwasher Model DMT800 Series, DMT700 Series, DMT400 Series Power Single-phased alternating current of 60Hz, 15A at 120V Used water pressure 20 ~ 120 psi (140 ~ 830 kPa) Wash type Rotating nozzle spray...
  • Page 8 2. Features and Specifications 2-3. Comparing Specifications with Existing Models...
  • Page 9 2. Features and Specifications 2. Features and Specifications 2-4. Options Specifications Photo Item Code Quantity Remarks Bracket-install DD61-00176A Assy-install kit for Top mounting DD94-01002A (Bracket-install + Screw) Screw for side mounting Provided with the dishwasher DD68-00050A (DMT800) User Manual DD68-000xxA (DMT700) DD68-00074A (DMT400) Installation Guide DD68-00046A...
  • Page 10 2. Features and Specifications Memo...
  • Page 11: Disassembly And Reassembly

    3. Disassembly and Reassembly 3. Disassembly and Reassembly 3-1. Tools for Removal and Reassembly Tool image Tool Type Remarks Adjustable Wrench Open-end Wrench 1-7/16” Vice pliers Others Common tools for servicing (screwdriver, nipper, long nose pliers) Screwdriver - Philips, flat, Torx T20 Nut Driver 10mm Heater bracket Nut...
  • Page 12: Standard Disassembly Drawings

    3. Disassembly and Reassembly 3-2. Standard Disassembly Drawings Throughout this manual, features and appearance may vary from your model. Warning Always disconnect the electric power supply & water supply before servicing any electrical component, making ohmmeter checks, or replacing any parts. Caution Before moving the unit, laying it down for service, or removing any parts for service be sure to drain as much of the water from the unit as possible.
  • Page 13 3. Disassembly and Reassembly Part Photo Description Preparation: * Make sure to disconnect the power. 1. You can see the Main-PBA case under the door. 2. Remove the two (2) screws of PBA case and pull out the PBA cover carefully. 3.
  • Page 14 3. Disassembly and Reassembly Part Photo Description Preparation: * Make sure to disconnect the power. * Remove the lower basket in the dishwasher. * Cover the Assy sump with towel for prevent losing screws. 1. Open the door completely. Remove the 12 screws holding the tub front, frame front, and control panel in place.
  • Page 15 3. Disassembly and Reassembly Part Photo Description Preparation: * Disassemble the frame front , Assy control panel and Door lock switch. - Refer the “Frame front” disassembly section to separate the Frame front. 1. Remove the two(2) screws on the control panel and release the window panel using flat screw driver.
  • Page 16 3. Disassembly and Reassembly Part Photo Description Preparation: * Disassemble the frame front , Assy control panel and Door lock switch. - Refer the “Frame front” disassembly section to separate the Frame front. 1. Remove two(2) connectors in the display – PCB. Control Panel (DMT400) 2.
  • Page 17 3. Disassembly and Reassembly Part Photo Description Air Diffusion Condensing Dry system This system circulates and combines air from inside the dishwasher with outside air to dry the dishes quickly and efficiently. This process is designed to use as little energy possible while exhausting the least amount of hot and humid air back into the room.
  • Page 18 3. Disassembly and Reassembly Part Photo Description 5. Remove the Assy case vent by rotating it counterclockwise. 6. Remove the Assy dry duct from the Assy duct Condensing dry condenser. system These parts are fixing by four(4) hooks. To Assy Case Vent disassemble, hooks are broke down in the Assy dry &...
  • Page 19 3. Disassembly and Reassembly Part Photo Description The dispenser automatically dispenses both the detergent and the rinse agent at the appropriate times. The dispenser is activated twice during a wash cycle. The first time the dispenser is activated (1), the lever slides up the right-hand path of the connecting rod.
  • Page 20 3. Disassembly and Reassembly Part Photo Description Preparation: Remove the lower basket in the dishwasher. Make sure to remove the water in each nozzle to block the wet. 1. Upper Nozzle : Remove it by rotating the holder. Nozzles (counterclockwise) 2.
  • Page 21 3. Disassembly and Reassembly Part Photo Description Preparation: Disassemble the baskets, nozzles and storm wash nozzle. - Refer the each disassembly section to separate. 1. Release the 13 screws on Assy sump. (Except the two (2) screws holding the holder nozzle L in center place.) Take off the filter mesh body, cover sump(&...
  • Page 22 3. Disassembly and Reassembly Part Photo Description The Assy case brake & case sensor is mounted on the left side of the tub. Its purpose is to provide a method of supplying water for the wash and rinse cycles. The air inlet allows air into the tub to permit air flow for dish drying.
  • Page 23 3. Disassembly and Reassembly Part Photo Description Preparation: * Disassemble the Assy case brake. - Refer the Assy case brake disassembly section to separate. 1. Loosen the clamp(left side in picture) and release the hose from the Assy case brake. 2.
  • Page 24 3. Disassembly and Reassembly Part Photo Description Preparation: Make sure to disconnect the power & water supply & drain hose connections. Remove the upper & lower baskets in the dishwasher. Pull out the dishwasher carefully. Shutter & 1. Lay down the dishwasher on its back. Release the Leakage Sensor two(2) screws fixing the base and shutter in place.
  • Page 25 3. Disassembly and Reassembly Part Photo Description Preparation: Make sure to disconnect the power & water supply & drain hose connections. Remove the upper & lower baskets in the dishwasher. Pull out the dishwasher & Lay down the dishwasher on its back carefully. Remove the water supply line(&...
  • Page 26 3. Disassembly and Reassembly Part Photo Description The water valve is electrical controlled and solenoid operated. The flow of water is controlled by a rubber flow washer capable of maintaining a flow of 4(±5%) liters per minute with incoming water pressure of 0.04~1Mpa.The water valve is mounted to the front of base.
  • Page 27 3. Disassembly and Reassembly Part Photo Description Preparation: Disassemble the shutter. - Refer the “shutter” disassembly section. 1. Remove the drain pump by rotating it clockwise lifting up the hook holding it in place slightly. Drain Pump Caution Make sure to remove remain water in the dishwasher.
  • Page 28 3. Disassembly and Reassembly Part Photo Description The distributor motor is located under the tub at the middle, rear the circulation motor. The distributor motor operates to select flow direction at the dishwasher sump when select half load or storm wash option. Preparation: Disassemble the cover sump &...
  • Page 29 3. Disassembly and Reassembly Part Photo Description Preparation: Make sure to disconnect the power. Disassemble the cover sump & cutter disposer. Disassemble the shutter & bracket front lower. Refer the each disassembly section. 1. Remove the two (2) heater connectors. 2.
  • Page 30 3. Disassembly and Reassembly Part Photo Description Preparation: Disassemble the baskets, nozzles, duct nozzle & storm wash nozzle. Disassemble the frame left & the shutter & bracket front lower. - Refer the each disassembly section. 1. Remove the parts which are connected with Assy sump.
  • Page 31 3. Disassembly and Reassembly Part Photo Description Preparation: Disassemble the frame L/R and the shutter. - Refer the each disassembly section. 1. Remove the six (6) screws of the base plate both- side. (in Red circle) 2. Lay down the dishwasher on its back carefully. Base 3.
  • Page 32 3. Disassembly and Reassembly 3-3. Checkpoints after Finishing a Service 1 Check the safety device Check the operation of the door lock switch. Make sure that it is locked while the dishwasher is running and that it is unlocked when the dishwasher stops. 2.
  • Page 33 3. Disassembly and Reassembly Memo 3-23...
  • Page 34: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Information code 4-2-1. DMT800 & DMT700 series CODE SYMBOL Meaning Occurring condition Expected condition Thermistor terminal not connected. Temperature When 0.2V or below, or 4.5V or above is maintained for over 3 seconds. sensor Error Possible defect : Thermistor , Main PBA.
  • Page 35 4. Troubleshooting 4. Troubleshooting 4-1. Information code 4-2-2. DMT400 series CODE SYMBOL Meaning Occurring condition Expected condition Thermistor terminal not connected Temperature When 0.2V or below, or 4.5V or above is maintained for over 3 seconds. Sensor error Possible defect : Thermistor , Main PBA Heater terminal not connected When the temperature change is 4˚C or less within the first 10 minutes after Heater error...
  • Page 36 4. Troubleshooting 4-2. Service Inspection Mode 4-2-1. DMT800 & DMT700 series - Press the ‘Heavy’ + ‘Delicate’ + ‘Power’ buttons at the same time for two seconds to enter Service Inspection Mode. - All LEDs are displayed for the first two seconds and then Software-Ver. will be indicated. - You can change the mode by pressing the Normal button again.
  • Page 37 4. Troubleshooting Mode Display Related Parts Symptoms Note Inlet valve Water is supplied until Over-level water error (oE) is blinked. No.8 Over level water Error Overflow Sensor If Over-level water error (oE) occurs, overflow sensor is OK. Drain Pump Drain pump will drain until low level sensor is detected. No.9 Drain Error Water-level sensor...
  • Page 38 4. Troubleshooting 4-2. Service Inspection Mode 4-2-2. DMT400 series - Press the ‘Heavy’ + ‘Delicate’ + ‘Power’ buttons at the same time for two seconds to enter Service Inspection Mode. - All LEDs are displayed for the first two seconds and then Software-Ver. will be indicated Binary Code using LED of ‘Normal, Heavy, Delicate, Smart Auto’. - You can change the mode by pressing the Normal button again.
  • Page 39 4. Troubleshooting Mode Display Related Parts Symptoms Note ‘Normal’ + Drain Pump Drain pump will drain until low level sensor is detected. No.7 ‘Smart Auto’ Drain Error Water-level sensor If Low level sensor is not detected after 60 seconds, Drain Error (‘Delicate’ LED) will blink. Operate each operating part when the key is pressed.
  • Page 40 4. Troubleshooting Error Error Type Checking Method Corrective actions mode 1. Check whether the water faucet is open. - Open the faucet. - Close the faucet and turn off the power. Wait until the water supply 2. Check whether the water supply has been cut off. resumes.
  • Page 41 4. Troubleshooting Error type Error mode Checking Method Corrective actions - Adjust the hot water supply so that the temperate of the supplied water is 1. Check the hot water connections for the Inlet Valve. [Or] less than 176˚F (80˚C) High temperature Water ‘Normal’...
  • Page 42 4. Troubleshooting Error type Error mode Checking Method Corrective actions - Reconnect the Water-level sensor connector. 1. Check the connections for the Water-level sensor connectors. [Or] Low-level water error ‘Normal’ + - Faulty: Replace the Assy case sensor, Remove foreign material from the ‘Heavy’...
  • Page 43 4. Troubleshooting Error type Error mode Checking Method Corrective actions - Reconnect the Half Load motor connector 1. Check the connections of the Half Load motor connector. Half Load function Error - Faulty: Replace the Half Load Motor. (Only for - Normal: Replace the Main PBA assy.
  • Page 44 4. Troubleshooting Error type Error mode Checking Method Corrective actions 1. Check the hot water connections for the Inlet Valve.. - See the “Temperature Sensor Error”. [Or] High Temperature ‘Normal’ + Heating Error 2. Check the operation of the Thermistor. - See the “Heater Error”.
  • Page 45 4. Troubleshooting Error type Error mode Checking Method Corrective actions 1. Check the connections for the Thermistor - Reconnect the Thermistor connector. connector. 2. Check whether the Thermistor is operating normally. - Faulty: Replace the Thermistor. - Measure the voltage between both ends of the - Normal: Replace the Main PBA assy.
  • Page 46 4. Troubleshooting Error type Error mode Checking Method Corrective actions 1. Check the connections for the power cable - Reconnect the power cable. 2. Check the voltage of the power outlet. - Connect to a 120V power source. Normal: AC 120V - Faulty: Check and replace the wires of the power part.
  • Page 47 4. Troubleshooting Error type Error mode Checking Method Corrective actions 1. Check the connections for the Circulation Motor - Reconnect the Circulation Motor connector. connector. - Reconnect the Startup Condenser connector of the Circulation Motor. 2. Check the connections for the Startup Condenser connector of the Circulation Motor.
  • Page 48 4. Troubleshooting Error type Error mode Checking Method Corrective actions Reconnect the Door Sensing Switch connectors 1. Check the connections for the Door Sensing Switch : Check the blue wire and the switch connected to the blue wire. Normal (Power Key On): 9.5 to 12.5V (when the door is open) Normal (Power Key Off): 5.5 to 7.0V (when the door is open)
  • Page 49 4. Troubleshooting Error type Error mode Checking Method Corrective actions 1. Check whether detergent is inserted into the - Check whether there is detergent in the Dispenser. dispenser. 2. Check the connections for the Dispenser connector. - Reconnect the Dispenser connector. - Faulty: Replace the Dispenser.
  • Page 50 4. Troubleshooting Error type Error mode Checking Method Corrective actions 1. Check whether Rinse Refill LED light or not. - If Rinse Refill LED light, refill rinse in Dispenser. 2. Check the wire connections for the Dry Fan Motor. - Reconnect the Dry Fan Motor connectors. - Faulty: Replace the Dry Fan Motor assy.
  • Page 51 4. Troubleshooting Error type Error mode Checking Method Corrective actions 1. Check the connections for the Sub PBA connector - Reconnect the Sub PBA connectors. 2. Check the LED and Input Key 1) Push ‘Normal’ + ‘Heavy’ + ‘Power Key’ 2) Push ‘Normal’...
  • Page 52: Pcb Diagram

    5. PCB Diagram 5. PCB Diagram 5-1. Main PCB 10 11 13 14 Location Description Location Description Location Description CN201 Wash Motor, Dry Fan Motor, Dispenser RY203 Half Load Motor Driving Relay (option) CN101 MAIN PBA Power (120V) RY202 Dispenser Driving Relay CN901 RY208 Drain Pump Driving Relay...
  • Page 53: Pcb Diagram

    5. PCB Diagram 5-2. New PBA- Detailed Specifi cations and Descriptions for Connectors and Relay Terminals (MAIN PBA) CN101 CN301 CN302 CN102 CN501 CN202 CN201 T201 T202 1) GND 1) HIGH-R 1) HALF LOAD 1) 5V 1) GND 1) COLD-VALVE 1) DISPENSER LIVE HEATER...
  • Page 54: Wiring Diagram

    6. Wiring Diagram 6. Wiring Diag6am 6-1. Wiring Diagram Reference Information Abbreviated word Meaning GRAY ORANGE VIOLET PINK YELLOW BROWN WHITE BLACK SKY BLUE BLUE YELLOW / GREEN COLORLESS...
  • Page 55: Schematic Diagram

    7. Schematic Diagram 7. Schematic Diagram 7-1. MAIN CONTROL  This Document can not be used without Samsung’s authorization.
  • Page 56: Reference

    8. Reference 8. Reference 8-1. Model Number Naming Rules 0 : 2010y R : R-pjt S : Stainless D : Dishwasher 1 : 2011y B : Black M : Machine 2 : 2012y W : White T : 24” Tall Tub 7,8 : Best 0 : Basic H : Hidden...
  • Page 57 8. Reference 8-2. Terminology 1. Circulation Motor A motor that sucks the water remaining on the floor of the dishwasher and injects water using high pressure through the internal water passages to the top, middle and lower nozzles. 2. Drain Pump The pump that drains the polluted water from the dishwasher generated while the dishwasher is running.
  • Page 58 Mideast & Africa http://mea.samsungportal.com © 2008 Samsung Electronics Co.,Ltd. This Service Manual is a property of Samsung Electronics Co.,Ltd. All rights reserved. Any unauthorized use of Manual can be punished under applicable Printed in Korea International and/or domestic law.

This manual is also suitable for:

Dmt700 seriesDmt400 series