Samsung DMT800 Series User manual

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SERVICEManual
DISHWASHER CONTENTS
Refer to the service manual in the GSPN (see the rear cover) for the more information.
1. Safety Instructions
2. Features and Specifications
3. Disassembly and
Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Schematic Diagram
8. Reference
Prgho#Frgh# = 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

1-1
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 possibleሪ
accidents and hazards while servicing.
Two types of safety symbols, Warning and Caution, are used in the safety instructions.ሪ
Warning Hazards or unsafe practices that may result in severe personal injury or death.
Caution Hazards or unsafe practices that may result in minor personal injury or property damage.
Warning
Before Servicing
(When servicing electrical parts or harnesses) Make sure to disconnect the circuitࣃ
breaker or power cable before servicing.
Failing to do so may result in a risk of electric shock.¯
Do not allow consumers to connect several appliances to a single power outlet at the
ࣃ
same time.
There is a risk of fire due to overheating.¯
When removing the power cord, make sure to hold the power plug when pulling the plugࣃ
from the outlet.
Failing to do so may damage the plug and result in fire or electric shock.¯
When the dishwasher is not being used, make sure to disconnect the circuit breaker orࣃ
power cable from the power outlet.
Failing to do so may result in electric shock or fire due to lightning.¯
Do not place or use gasoline, thinners, alcohol, or other flammable or explosiveࣃ
substances near the dishwasher.
There is a risk of explosion and fire caused from electric sparks.¯

1-2
1. Safety Instructions
While Servicing
Check if the power cable is damaged, flattened, cut or otherwise degraded.ࣃ
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
ࣃ
parts.
This will prevent a risk of fire due to arcing and short circuits in advance.¯
When connecting wires, make sure to connect them using the relevant connectors and
ࣃ
check that they are completely connected.
If tape is used instead of the connectors, it may cause fire due to arcing.¯
Make sure to disconnect the PBA power terminals before starting the service.
ࣃ
Failing to do so may result in a high voltage electric shock.¯
When replacing the heater, make sure to fasten the nut after ensuring that it is inserted
ࣃ
into the bracket-heater.
If not fasten the nut of the heater, it cause water and electric leakage.¯
After Servicing
Check for any water leakage.ࣃ
Perform a test run for the dishwasher using the standard(normal) cycle and check¯
whether there is any water leakage through the floor section or the pipes.
Do not allow consumers to repair or service any part of the dishwasher themselves.
ࣃ
This may result in personal injury and shorten the product lifetime.¯
If it seems that grounding is needed due to water or moisture, make sure to runࣃ
grounding wires.
Failing to do so may result in electric shock due to electric leakage.¯

1-3
1. Safety Instructions
Caution
Before Servicing
Do not sprinkle water onto the dishwasher directly when cleaning it.ࣃ
This may result in electric shock or fire, and may shorten the product lifetime.¯
Do not place any containers with water on the dishwasher.
ࣃ
If the water is spilled, it may result in electric shock or fire. This will also shorten the¯
product lifetime.
Do not install the dishwasher in a location exposed to snow or rain.ࣃ
This may result in electric shock or fire, and shorten the product lifetime.¯
Do not press a control button using a sharp tool or object.ࣃ
This may result in electric shock or damage to the product.¯
During Servicing
When wiring a harness, make sure to seal it completely so no liquid can enter.ࣃ
Make sure that they do not break when force is exerted.¯
Check if there is any residue that shows that liquid entered the electric parts or
ࣃ
harnesses.
If any liquid has entered into a part, replace it or completely remove any remaining¯
moisture from it.
If you need to place the dishwasher on its back for servicing purposes, place a support(s)
ࣃ
on the floor and lay it down carefully so the back is on the floor.
Do not lay it down on its front or side. This may result in scratches to the surface or¯
damage to the parts.

1-4
1. Safety Instructions
After Servicing
Check the assembled status of the parts.ࣃ
They must be the same as before servicing.¯
Check whether the product is level with the floor. Check if there are any deformations in
ࣃ
the sink. Check that the dishwasher is firmly installed to the sink.
Vibrations can shorten the lifetime of the product.¯

2-1
2. Features and Specifications
2. Features and Specifications
2-1. Features
Features Description Remarks
Extra large capacity
The upper rack is slanted for larger dishes. The spaceሪ
has been maximized to accommodate a variety of dish
sizes.
Elegant design with digital
touch sensors
Digital touch sensors are used in the control panel for moreሪ
simple operation, with a touch of elegance.
Increased convenience
The smart auto cycle determines the level of soil on theሪ
dishes and initiates the optimal cycle using this feature
saving water, energy and time.
Extremely quiet operation
Efficient noise control technology is used for the quietestሪ
possible operation. Your new Samsung dishwasher will be
quieter than ever.
Self-cleaning filter
Cleaning the filter yourself is a thing of the past! This productሪ
keeps food waste internally while operating, then drains it
automatically with the water.
Storm wash
(For DMT800 & DMT700
series)
With a jet stream like a geyser, Storm Wash effectivelyሪ
cleans big, heavily soiled pots with ease. Look for the built-in
extra nozzle and spray in the specialized Storm Washing
Zone.
Twin fan condensing drying
Two fans connected to one motor make for better dryingሪ
performance. Still better, your dishwasher emits no hot
steam. Instead, it mixes external fresh air with the internal
hot steam during drying to eliminate the steam, making your
dishwasher safer and easier to use.

2-2
2. Features and Specifications
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
Dry type Air diffusion condensing dry system
Power usage Main Motor : (2-step) 185W/150W, Heater : 1100W
Standard amount of used water 5.3~7.9 gallon (20~30L), Normal Cycle
Size (W×D×H) 23 ” x 24 ¾” x 33 ” inch (605 x 627 x 860 mm )
Above images might differ in the dishwasher models.
Middle nozzle
Upper rack Lower rack Cutlery basket
Air brake
Base
Dispenser
Door
Lower nozzle
Vapor vent cover
Control panel

2-3
2. Features and Specifications
2-3. Comparing Specifications with Existing Models
Model
NEW MODEL BASIC MODEL
DMT800RHS/B/W DMT700RFS/B/W DMT400RHS/B/W DMR78AHS/B/W DMT300RFS/B/W
Photo
Design Specifications
Panel Control Black Silver/Black /White Black Black Silver/Black /White
Control Type Touch Touch Touch Touch Button
Frame Front STS/Black/White
Basket Handle Blue + STS Blue + STS Blue + Gray Gray Blue + Gray
Function Specifications
Soil Detection Sensors OOOOO
Drying method Air diffusion condensing
Basket Height Adjustment One-touch One-touch 2-stage One-touch 2-stage
Leakage Sensor OOOOO
Programs
6 (Normal, Heavy,
Delicate, Pot & Pans,
Quick+, Smart Auto)
6 (Normal, Heavy,
Delicate, Pot & Pans,
Quick, Smart Auto)
4 (Normal, Heavy,
Delicate, Smart Auto)
6 (Normal, Heavy,
Delicate, Rinse, Quick,
Smart Auto)
4 (Normal, Heavy,
Delicate, Quick)
Options
6 (Delay Start,
Sanitize, Half Load,
Storm Wash, Child
Lock, Cancel & Drain)
6 (Delay Start,
Sanitize, Half Load,
Storm Wash, Child
Lock, Cancel & Drain)
3
(Sanitize, Child Lock,
Cancel & Drain)
5 (Delay Start,
Sanitize, Half Load,
Child Lock, Cancel &
Drain)
3
(Sanitize, Child Lock,
Cancel & Drain)

2-4
2. Features and Specifications
2-4. Options Specifications
Photo Item Code Quantity Remarks
Bracket-install DD61-00176A 2
Provided with
the dishwasher
Assy-install kit for Top
mounting
(Bracket-install + Screw)
DD94-01002A 2+2
Screw for side mounting 2
User Manual
DD68-00050A (DMT800)
DD68-000xxA (DMT700)
DD68-00074A (DMT400)
1
Installation Guide DD68-00046A 1
Elbow - 1
Sold separately
Water Supply Line
(Flexible STS supply line is
recommend)
-1
Air Gap - 1
Rubber Connector -1
Hose Clamp -1
Strain Relief -1
2-4
2. Features and Specifications

2-5
2. Features and Specifications
Memo

3-1
3. Disassembly and Reassembly
3. Disassembly and Reassembly
3-1. Tools for Removal and Reassembly
Tool image 
No. Tool Type Remarks
Adjustable Wrench
Open-end Wrench 1-7/16” Leg
Vice pliers
Others
(screwdriver, nipper, long nose pliers)
Common tools for servicing
Screwdriver - Philips, flat, Torx T20
Nut Driver 10mm Heater bracket Nut
* Preparation for parts replacement
1. Take out the residual water inside the product.
(Drain the water by operating the drain pump)
2. Close the water supply valve.
3. Turn off the power & disconnect power cable.
You must turn off the circuit breaker connected to the product.
4. Pull out the unit from the sink and lay it on the floor.
Be careful of the drain hose when pulling out the unit.
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When pulling out or laying the dishwasher down for service, it may be necessary to lower the height of the adjustable
legs to provide the clearance for the removal of the unit, prevent breaking the legs, or damaging the base of the unit.

3-2
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. Use a protective mat or towel to prevent damage to the floor or having any of the remaining
water spill on the floor.
All voltage checks should be made with a voltmeter having a full scale range of 250 volts or higher. After service is
completed, be sure all safety grounding circuits are complete, all electrical connections are secure, and all access
panels are in place.
Before servicing, make sure to remove all items include baskets inside dishwasher.
Part Photo Description
Terminal
- Fasten type
- P-Lock type
This dishwasher use 2 kinds terminal type.
Fasten type P-Lock type P-Lock type Fasten type
Remove the
Terminal
- P-Lock type
Buckle 1. Terminal with buckle.
2. Press the buckle, and pull out the terminal.
* P-lock type for drain pump.
Remove the
Terminal
- Fasten type
1. Use the proper tool to firmly insert or remove
the “fasten” type terminals on the Main PCB, the
dispenser “rinse aid” level sensor, and the heater.
Hold both sides of the connection to prevent bending
the terminals or breaking the PCB.

3-3
3. Disassembly and Reassembly
Part Photo Description
Main PBA
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. Remove the all connectors in the PBA include
two(2) fasten type ones at right side.
4. Remove the three (3) screws on the PBA board.
5. Pull out the PBA board carefully..
When removing the Main PBA, lift up the PBA board
carefully because it is hanging to the PBA case with
two(2) hooks.
If you feel hard to disconnect the wire connectors.
Follow the below.
a. Release two(2) fasten type connector located right
side.
b. Unscrew the three(3) screws in PBA board & pull
out the PBA board.
c. Disconnect the wire connectors.
坍Reassembly is in the reverse order of the removal.

3-4
3. Disassembly and Reassembly
Part Photo Description
Frame front
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.
Before removing it, place a cushioned mat on the
floor to prevent being scratched.
After removing screws, make sure to hold the tub
front using your hand. It can prevent closing door
suddenly and harming you.
Caution
Do not place the removed screws on the tub front.
They may fall into the sump assy.
2. Pull out the Frame front & the Assy control panel
carefully.
3. Remove the Assy control panel from Frame front. (
Pull out just a little and push down it.)
Door Lock Switch
(Door latch)
Preparation:
* Disassemble the frame front.
1. When removing the door latch, lift up the door latch
which is fixed by two hooks.
Use a flat screwdriver to remove it.
2. Release the micro switch.
坍Reassembly is in the reverse order of the removal.

3-5
3. Disassembly and Reassembly
Part Photo Description
Control Panel
+
Window Panel
(DMT800)
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.
- Insert the flat screw driver into the gap of screw
boss and turn it over.
2. Rotate the window panel to upside and
disconnect the wire connector.
3. Release the two(2) screws on the window panel
to release the guide LED.
Control Panel
(DMT400)
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.
2. Pull the control panel up slightly from Assy frame
front , and pull it out.
3. Unscrew two(2) screws to remove display-PCB
and guide-LED.
4. Disconnect the 2 wire connectors from control
panel(touch-PCB).
坍Reassembly is in the reverse order of the removal.

3-6
3. Disassembly and Reassembly
Part Photo Description
Control Panel
(DMT400)
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.
2. Pull the control panel up slightly from Assy frame
front , and pull it out.
3. Unscrew two(2) screws to remove display-PCB and
guide-LED.
4. Disconnect the 2 wire connectors from control
panel(touch-PCB).
坍Reassembly is in the reverse order of the removal.

3-7
3. Disassembly and Reassembly
Part Photo Description
Condensing dry
system
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.
hGkGjG
hGjG} h kGk Preparation:
* Disassemble the frame front & Assy control panel.
- Refer the “Frame front” disassembly section.
1. Remove the two(2) connectors from thermal actuator
& Dry Fan motor.
2. Open the door & Remove the three(3) screws
holding the bracket cover fan and Assy case vent.
3. Remove the cover fan by rotating using a tool.
(counterclockwise)
NOTE : Use a jig. If you have no jig, use a tool
such as a long nose pliers. Remove it carefully so that
the part is not damaged.
4. Remove the four (4) screws to release the bracket
door link and remove Assy dry system.
Be careful while removing them as the duct
condenser is touching the bracket door link and the
cushion duct.
坍Reassembly is in the reverse order of the removal.

3-8
3. Disassembly and Reassembly
Part Photo Description
Condensing dry
system
Assy Case Vent
&
Assy Dry Duct
&
Assy Duct
Condenser
5. Remove the Assy case vent by rotating it
counterclockwise.
6. Remove the Assy dry duct from the Assy duct
condenser.
These parts are fixing by four(4) hooks. To
disassemble, hooks are broke down in the Assy dry
duct.
Caution
Only when dry motor is not working, disassemble it.
After remove it, you should use new Assy dry duct
part to reassemble.
7. Pull out Assy dry duct.
Assy Case Vent
1. Remove the Assy case vent.
2. Release two screws.
3. Pull the thermal actuator firmly to remove it from the
housing and to release it from the gasket vent.
坍Reassembly is in the reverse order of the removal.

3-9
3. Disassembly and Reassembly
Part Photo Description
Dispenser
X
Y
Z
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.
This action moves the cover catch and releases the
detergent cover. When activated for the second time in
a cycle, the lever lifts the connecting rod by the notch,
lifting the rinse dispenser plunger (2) and releasing the
rinse agent.
When close the cover of dispenser, the lever returns to
its original starting position.
The magnetic sensor(3) are connected to rinse aid
lack warning light at control panel by wires. When the
indicator lights up, it should add more rinse aid.
Preparation:
* Disassemble the frame front.
- Refer the “Frame front” disassembly section to
separate the Frame front.
1. Remove the three (3) connectors (blue) on both sides
of the dispenser.
Caution
Right side’s rinse aid level sensor connectors are
fasten type. Be careful don’t break them when
removing them.
2. Release the six (6) screws (Red) holding at the tub
front and remove the two (2) bracket dispensers in
place.
3. The dispenser is fixed to the tub front with many
hooks. Use several flat screwdrivers to remove it .
4. Push it to the inside carefully.
Caution
Be careful as the tub front is sharp.
坍Reassembly is in the reverse order of the removal.

3-10
3. Disassembly and Reassembly
Part Photo Description
Nozzles
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.
(counterclockwise)
2. Middle Nozzle : Remove it by rotating the holder
from upper basket. (counterclockwise)
3. Lower Nozzle : Pull out carefully it from the Assy
sump.
Duct Nozzle
1. The duct nozzle is fixed by two brackets inside tub.
Use a flat screwdriver to remove it. Be careful don’t
make scratch on tub.
2. Release the hooks clamping the bracket duct (U) &
the bracket duct (M) using a flat screwdriver.
3. Remove the duct nozzle by rotating to left side.
Storm wash Nozzle
(DMT800/
DMT700)
1. Release the screw.
2. Rotate the Assy storm wash nozzle to right turn
slightly.
坍Reassembly is in the reverse order of the removal.