Samsung DMT SERIES User manual

#1. No Power
1-1. No Power · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
2-1. No Drain · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
#2. No Drain
3
4
3
-
1.
From door bottom on washing portion
#3. Water Leakage
5
!"#$%&'#$()
Contents
! "#$%&!
3
-
1.
From door bottom on washing portion
· · · · · · · · · · · · · · · · · · · · · · · · · · ·
5
3-2. From water supply line & connection · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6
4-1. Abnormal Noise · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
#4. Noise
7
5-1. No Water Supply · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
#5. Water Supply Problem
8
5-2. No Stop Water Supplying · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 10
#6. Improper Operation
6-1. Not Dry · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
6-2. Not Clean - If Some Food Particles Remains on Dishes · · · · · · ·
11
13
6-3. Not Clean - If Spots and Filming on Glasses and Flatware · · · · 15
6-4. Not Clean - If Leaves Glasses with a Dim Polish · · · · · · · · · · · · · · · 17
6-5. Cycle Doesn’t Start · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 18
: Difficult repair

7-1. 1E (High Temperature Heating Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
#7. Error Code
19
7-2. 3E (High Temperature Water Supply Error) · · · · · · · · · · · · · · · · · · · · 20
7-3. 4E (Water Supply Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 21
7-4. 5E (Drain Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
23
!"#$%&'#$()
Contents
! '#$%&!
7-5. 9E (Low Level Water Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
24
7-6. HE (Heater Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
25
7-7. LE (Leakage Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
26
7-8. PE (Half Load Function Error – only DMT 800) · · · · · · · · · · · · · · · · ·
27
7-9. bE (Button Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
28
7-10. oE (Over Level Water Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
29
1. DMT800, DMT610, DMT350 Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
: Difficult repair
# Appendix 1. SVC Inspection Mode
31
2. DMT400 Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 33
3. DMR57, DMR77, DMR78 Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 35
7-11. tE (Temperature Sensor Error) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 30

Causes
Check Point Voltage at the outlet, sub PBA, main PBA
ㆍNo Voltage at electrical outlet
ㆍSub or main PBA defective
#1. No Power
1-1. No Power
Symptom
ㆍDishwasher will not turn on.
Step 1 : Voltage at Electrical Outlet
!Check if the voltage at electrical outlet is approximately AC 120V.
The dishwasher should be connected to dedicated breaker
Step 2 : Sub PBA
!Check all the connections of the Sub PBA connector.
"
Check for LED and Input Key
! $#$%&!
Step 3 : Main PBA (1)
!Verify the AC power lines into the Main PBA.
- Measure the voltage between the black wire and
the yellow wire of CN101.
(If the voltage is not AC120V, check for bad
connections or open circuits of the power part.
Step 4 : Main PBA (2)
!Check for the voltage between pin 4 (orange) of the main PBA CN302 connector and
pin 7 (pink) of the CN301 connector.
(The normal voltage : DC 4.5V ~ 5.5V
"Check for the voltage between pin 10 (blue) of the main PBA CN302 connector and
pin 9 (white) of the CN302 connector.
(The normal voltage : DC 9.5V ~ 12.5V (Power key on)
DC 5.5V ~ 7.0V (Power key off)
If the voltage is not normal, replace main PBA.
"
Check for LED and Input Key
- Push ‘Normal’ + ‘Heavy’ + ‘Power Key’
- Push ‘Normal’ Key 4 times
- Push all key.
(If all LEDs do not light, replace sub PBA.

Causes
Check Point Drain hose, water level sensor, drain pump, main PBA
ㆍDrain hose blocked
ㆍWater level sensor defective
ㆍDrain pump defective
ㆍMain PBA defective
#2. No Drain
2-1. No Drain
Symptom
ㆍDishwasher doesn’t drain.
Step 1 : Drain Hose
!Check if the drain hose is fold or kinked.
"Check if drain hose is clogged or restricted
! )#$%&!
Step 2 : Water Level Sensor
!Check the connections for the Water-level sensor.
"Check for the operation of the Water-level sensor.
If it is faulty, replace the assembly case sensor and
remove foreign material from the float
If it is normal, replace the Main PBA assembly.
Step 3 : Drain Pump
!Check the connections of the Drain Pump.
"Check the resistance of the drain pump coils.
(Drain Resistance : approximately 25Ω
If the value is not normal, replace the Drain pump.
Step 4 : Main PBA
!Check the operation of the Drain Pump Relay.
→ Check for the operating voltage between the yellow wire of the Main PBA CN101
connector and the orange wire of the CN202 connector.
(The Voltage : AC 120V (while operating)
If the value is not normal, replace main PBA.

Causes
Check Point Installation, lower nozzle
ㆍPoor installation.
ㆍLower nozzle defective.
#3. Water Leakage
3-1. From door bottom on washing portion
Symptom
ㆍWater Leaks from door bottom during washing cycle.
Step 2 : Lower Nozzle
Check if the Lower nozzle is bended or divided.
Step 1 : Installation
!Check if the dishwasher is level
If it is tilted forward, water can come out through bottom's corner.
! *#$%&!
!
Check if the Lower nozzle is bended or divided.
(Replace new lower nozzle.

Causes
Check Point Water connection
ㆍPoor water connection
#3. Water Leakage
3-2. From Water Supply Line & Connection
Symptom
Step 2 : Water Connection (2)
Check the threads on the water valve
Step 1 : Water Connection (1)
!Check if the water connection is wrong.
(Reconnect water connection properly, be sure to use
thread seal on the 90 degree elbow fitting.
ㆍWater Leaks from water supply line & connection.
! %#$%&!
!
Check the threads on the water valve
(Replace the part.

Causes
Check Point Installation, sump, drain chamber
ㆍPoor installation
ㆍForeign material inside
ㆍNormal sound (no defect)
#4. Noise
4-1. Abnormal Noise
Symptom
ㆍAbnormal noise occurs during operation.
Step 1 : Installation
!Check if the product is level with the floor.
"Check if there are any deformations in the sink drain pipe.
#Check if the dishwasher drain hose is firmly installed to the sink.
Step 2
: During Wash Cycle
! +#$%&!
Step 2
: During Wash Cycle
!If the grinding noise occurs during wash cycle,
hard material may be inside Assembly sump.
(Remove the abnormal item in assembly sump and check the disposer blade.
Step 3 : During Drain Cycle
!If grinding noise occurs during drain cycle,
hard material may be inside drain chamber.
(Remove the abnormal item in drain chamber and check the drain pump impeller.
Step 4 : Normal Sound
!These sounds are not defective, please advise customers that they are normal.
- Sound is generated when the dispenser cover is open and the drain pump is operating
in an early stage.
- There may be a ‘chopping’ sound because a nozzle is bumping against the dishes.
(Rearrange the dishes.

Causes
Check Point Water tap, water line, water valve filter, case brake, water valve, case sensor
ㆍWater tap is not open / water pressure is low.
ㆍWater line blocked or kinked.
ㆍWater valve filter blocked / water valve defective
ㆍCase brake, case sensor defective
#5. Water Supply Problem
Symptom
ㆍWater is not supplied.
Step 1 : Water Tap
!Check if water tap is open.
"If water pressure is too low, customers may think no water is supplied.
5-1. No Water Supply
! ,#$%&!
Step 2 : Water Line
!Check if the water hoses are kinked or not.
"Check if the water hoses are blocked by foreign materials.
#Check for water leakage at the connection of water valve
Step 3 : Water Valve blocked
!Check if the valve is blocked with foreign materials.
(Advise customers to clean the water valve periodically.
Step 4 : Check when water supply is stopped
!If the water supply stops after water is supplied for 5 seconds, go to Step 5.
"If the water supply stops after water is supplied for 1~5 minutes, go to Step 6.
#If the water supply stops after water is supplied fully into the float in Assembly Case
sensor is located in High level sensor, go to Step 8

Step 7 : Water Valve (2)
!Check for voltage value of the water valve during operation of water valve.
(
The Voltage value : approximately AC 120V
Step 6 : Water Valve (1)
!Check the wiring connections to the water valve.
"Check the Resistance of the water valve.
(Remove the connector before checking)
(The Resistance : 1.2kΩ
If the value is not normal, Replace the Water valve.
Step 5 : Assembly Case Brake
!If the water supply stops after water is supplied for 5 seconds,
replace the Assembly Case Brake which is including Flow Meter.
! -#$%&!
(
The Voltage value : approximately AC 120V
If the value is not normal, Replace the Main PBA.
Step 8 : Assembly Case Sensor
!If the water supply stops after water is supplied fully into the floater
in the assembly case sensor is located in High level sensor,
Replace the assembly case sensor which is
includes water (high & low) level sensor.

Causes
Check Point water valve, water level sensor / hose , main PBA
ㆍWater valve defective
ㆍWater level sensor defective
ㆍMain PBA defective
Symptom
ㆍWater is supplied continuously.
Step 1 : Water Valve
!If water is supplied on Power off status, replace the water valve.
#5. Water Supply Problem
5-2. No Stop Water Supplying
Step 2 : Water Level Sensor
!
Check the connections to the Water
-
level sensor.
! ".#$%&!
Step 3 : Main PBA
!Power on and then check voltage of the water valve.
(If the voltage value is approximately AC 120V,
even though the valve is not working, Replace Main PBA.
!
Check the connections to the Water
-
level sensor.
"Check for the operation of the Water-level sensor float.
If it is faulty, replace the assembly case sensor &
remove foreign material from the float
If it is normal, replace the Main PBA assembly.

Causes
Check Point Water Temperature, dishes, dispenser, fan motor, main PBA
ㆍWater Temperature
ㆍThe amount of dishes, the kind of dishes
ㆍDispenser, fan motor, main PBA defective
Symptom
ㆍDishes are not dry.
#6. Improper Operation
6-1. Not Dry
Step 1 : Water Temperature
!The temperature of the water is too low when the dishwasher is running.
(Connect the water supply line to a hot water supply.
Use the Sanitize option with rinse aid.
! ""#$%&!
Step 2 : The Amount of Dishes
!Too many dishes have been loaded.
(Proper loading of items can affect drying. Load your dishes as recommended.
Step 3 : Plastic Dishes
!Check if the plastic dishes are wet.
(Advise customers that plastic dishes often need towel drying as they absorb water
and release it well after the dry cycle is completed .
Step 4 : Water Drops
!Check if water is dropped to lower basket from the upper basket.
(Advise customers to empty the lower rack first and then the upper rack, after cycle ends.
This prevents water from dripping from the upper rack onto the dishes in the lower rack.
"Glasses and cups with concave bottoms hold water.
This water may spill onto other items when unloading.

Step 5 : Check Fan Motor
!Check if the fan is operating.
(If it is working properly, go to Step 7.
(If it is not working, go to Step 8.
Step 6 : Dispenser
!Verify there is rinse aid in the dispenser.
(Check for the dispenser and add the rinse aid.
Use the liquid type rinse aid for automatic dishwasher.
"Check if the wire connection to the rinse aid dispenser is firmly connected.
#Check if the dispenser operating relay is operating.
(If the relay on main PBA is working properly, replace dispenser.
If it isn’t, replace main PBA.
Step 7 : Fan Motor
!Check if the wire connection is firmly secured.
"Check the resistance of fan motor.
(
Resistance : approximately 150Ω
! "'#$%&!
(
Resistance : approximately 150Ω
If it is not normal, replace the part.
If it is normal, main PBA is defective and replace it.

Causes
Check Point Cycle selected, dishes, water, detergent, nozzle, air gap or disposal
ㆍImproper cycle selected
ㆍThe amount of dishes
ㆍWater temperature and or water pressure etc
ㆍThe kind of detergent and or the amount of detergent
ㆍNo rinse aid / Nozzle clogged / Air gap or disposal clogged
Symptom
ㆍSome food particles remains on dishes after washing dishes.
Step 1 : Cycle Selection
!Check if an inappropriate cycle has been selected.
(Did the customer choose the cycle that describes the most difficult soil ?
If you have some items with heavier soils, use a heavier cycle.
#6. Improper Operation
6-2. Not Clean – If Some Food Particles Remains on Dishes
! "$#$%&!
If you have some items with heavier soils, use a heavier cycle.
Select a cycle according to the number and soil level of the dishes.
Step 2 : Too Many Dishes
!Check if the dishes are improperly loaded
(Too many dishes have been loaded.)
(Rearrange the dishes so they do not interfere with the nozzle
rotation and the detergent dispenser's cover operation.
Load only an appropriate number of dishes and
load your dishes as recommended.
Step 3 : Water (1)
!Check if the water temperature is low.
(Connect the water supply line to a hot water supply.
For best performance, the temperature of the supplied water should be 120 ˚F (49 ˚C).
Step 4 : Water (2)
!Check if water pressure is low.
(The water pressure should be between 20 and 120 psi (140 ~ 830 kPa).

Step 6 : Detergent (1)
!Check if dishwasher detergent was not used.
(Use a automatic dishwasher detergent.
Advise customers to use the powder or gel type dishwasher detergent.
Step 5 : Water (3)
!Check if the water is too hard.
(Use a commercial dishwasher cleaner and
use a high-quality detergent with rinse aid.
Step 7 : Detergent (2)
!Check if the amount of detergent was inappropriate.
(Use the appropriate amount of automatic dishwasher detergent.
Step 8 : Detergent (3)
!Check if detergent remains in the dispenser.
(
Check for the position of dishware such as cookie sheets,
! ")#$%&!
(
Check for the position of dishware such as cookie sheets,
cutting boards, or large containers, etc. that maybe
blocking the detergent dispenser from opening properly.
Rearrange the dishes so they do not interfere
with the detergent dispenser opening.
Step 10 : Nozzle
!Check if the spray nozzle is clogged.
(If the pump or spray nozzle is clogged by debris or food,
remove them. And advise customers to clean the nozzle as recommended.
Step 11 : Air Gap / Disposal
!Check if the air gap or the disposer is clogged.
(Clean the air gap or flush the disposer.
Step 9 : Rinse Aid
!Check if there is rinse aid.
(Check for the dispenser and add the rinse aid and use the liquid type rinse aid.

Causes
Check Point Detergent, water
ㆍImproper detergent
ㆍHard water
Symptom
ㆍSpots and Filming on Glasses and Flatware
Step 1 : Detergent
!Check if the correct amount of effective detergent is being used.
(Advise customers to use recommended dishwasher detergents only.
(Refer to the manual)
- Do not use less than 1 tablespoon (15 g) per load.
- Detergent must be fresh to be effective.
-
Store detergent in a cool, dry area.
#6. Improper Operation
6-3. Not Clean – If Spots and Filming on Glasses and Flatware
! "*#$%&!
-
Store detergent in a cool, dry area.
- Heavy soil and/or hard water generally require extra detergent.
"Advise customers to use rinse agent
to remove spots and prevent new film buildup.
#If detergent is old or damp powder detergent, advise customers to use fresh detergent.
Step 2 : Hard Water
!In case of hard water, advise customers as followings.
- If water is extremely hard, a water softener may be required.
-The harder your water, the more detergent a load needs.
- To prevent the common hard-water problem of spotting and to help dishes dry better,
to add a rinse aid is recommended.
- If white residue inside your dishwasher is seen, occasionally try to dissolve it with
distilled white vinegar(or Lemon juice & White vinegar mixture).
Instead of using detergent, place a container with 2 cups of vinegar(or 1 cup of Lime
juice & 1 cup of white vinegar) in the bottom rack and run a normal cycle but without
sanitize option.

# How To Remove Spots and Films From Dishes
Try a white vinegar rinse. NOTE: This procedure is intended for occasional use only.
Vinegar is an acid, and using it too often could damage your dishwasher.
!Wash and rinse dishes. Do not use sanitize option. Remove all silverware or metal items.
"Put 2 cups (16 ounces [500 mL]) white vinegar in a glass or dishwasher-safe measuring
cup on the bottom rack.
#Run the dishwasher through a complete washing cycle. Do not use detergent.
Vinegar will mix with the wash water.
! "%#$%&!

Causes
Check Point water valve, water level sensor / hose , main PBA
ㆍToo much detergent
ㆍChemical reaction
ㆍWater temperature
Symptom
ㆍLeaves Glasses with A Dim Finish
Step 1 : Detergent
!Check if water supplied is soft and too much detergent was used.
(Under load the dishwasher and use a rinse aid to minimize this.
This is called etching and is permanent. To prevent this from happening,
use less detergent if you have soft water. Wash glassware in the shortest cycle
that will get them clean.
#6. Improper Operation
6-4. Not Clean – If Leaves Glasses with A Dim Finish
! "+#$%&!
that will get them clean.
Step 2 : Silica Film or Etching
!In case of Silica film or etching :
(silica film is a milky, rainbow-colored deposit; etching is a cloudy film)
- Sometimes there is a water/chemical reaction with certain types of glassware.
This is usually caused by some combination of soft or softened water,
alkaline washing solutions, insufficient rinsing, and overloading the dishwasher.
It might not be possible to prevent the problem, except by hand washing.
To slow this process use a minimum amount of detergent but not less than 1
tablespoon (15 g) per load. Use a liquid rinse aid and under load the dishwasher to allow
thorough rinsing. Silica film and etching are permanent and cannot be removed.
Step 3 : Water Temperature
!If water temperature entering the dishwasher exceeds 150°F,
this could be etching. Lower the water heater temperature.

Causes
Check Point Door sensing switch, main PBA
ㆍDoor sensing Switch defective
ㆍMain PBA defective
Symptom
ㆍCycle doesn’t start.
Step 1 : Door Sensing Switch (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)
-
Normal : < 2V (when the door is closed)
#6. Improper Operation
6-5. Cycle Doesn’t Start
! ",#$%&!
-
Normal : < 2V (when the door is closed)
Step 2 : Door Sensing Switch (2) / main PBA
!Check the operation of Door Sensing Switch.
(Remove the connector before measuring.)
(Check for the blue wire and the switch connected to the blue wire.
- Normal: OPEN (when the door is open)
- Normal: SHORT (when the door is closed)
(If it is not normal, replace the door sensing switch.
If it is normal, replace main PBA.

Causes
Check Point Thermistor, main PBA
ㆍ1E error occurs when the temperature of the thermistor is 176 degrees F or above
for over 3 seconds.
#7. Error Code
7-1. 1E (High Temperature Heating Error)
Step 1 : Thermistor
!Check the wiring connection to the thermistor.
"Check for resistance of thermistor.
(The Resistance (25$or 77%) : approximately 49.12kΩ
If the value is not normal, replace the thermistor.
Symptom
Step 2 :
Main PBA
ㆍ1E error is displayed. (‘Normal’ + ‘Smart Auto’ LED On)
! "-#$%&!
Step 2 :
Main PBA
!Check for the wire connection on main PBA
"If there is no defect at the above steps, replace main PBA.

Causes
Check Point Water tap, thermistor, main PBA
ㆍ3E error occurs when a water temperature of 176 %or above is detected during water
fill.
#7. Error Code
7-2. 3E (High Temperature Water Supply Error)
Step 2 : Thermistor
!
Check for the wire connection of thermistor.
Symptom
ㆍ3E error is displayed. (‘Normal’ + ‘Delicate’ + ‘Smart Auto’ LED On)
Step 1 : Water Tap
!Check for the hot water connections for the inlet valve.
(Adjust the hot water supply so that the temperature of the supplied water is less than
176%(80$).
! '.#$%&!
!
Check for the wire connection of thermistor.
"Check for resistance of thermistor.
(The Resistance (25$or 77%) : approximately 49.12kΩ
If the value is not normal, replace the thermistor.
Step 3 : Main PBA
!Check for the wire connection on main PBA
"If there is no defect at the above steps, replace main PBA.