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What safety instructions should service engineers follow before servicing the dishwasher?
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.
Before Servicing:
• (When servicing electrical parts or harnesses) Make sure to disconnect the circuit breaker or power cable before servicing. Failure 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 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 plug from the outlet. Failure 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 or power cable from the power outlet. Failure 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 explosive substances near the dishwasher. There is a risk of explosion and fire caused from electric sparks.
• Do not sprinkle water onto the dishwasher directly when cleaning it. This may result in electric shock or fire, and may shorten the product life.
• Do not place any containers with water on the dishwasher. If the water is spilled, it may result in electric shock or fire. This will also shorten the product life.
• Do not install the dishwasher in a location exposed to snow or rain. This may result in electric shock or fire, and shorten the product life.
• Do not press a control button using a sharp tool or object. This may result in electric shock or damage to the product.
What safety instructions should service engineers follow during servicing the dishwasher?
While Servicing:
• Check if the power cable is damaged, flattened, cut or otherwise degraded. If faulty, replace it immediately. Failure to do so may result in electric shock or fire.
• Completely remove any dust or foreign material from the housing, wiring and connection 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 correct connectors and 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. 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 into the bracket-heater. If the nut is not fastened correctly, it can cause a water leak.
During Servicing (Caution):
• When connecting a wiring harness, make sure to seal it completely so no liquid can enter. Make sure that the connections are securing by slightly pulling on them.
• Check if there is any evidence that liquid has entered electric components or connections. 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) 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.
What safety instructions should service engineers follow after servicing the dishwasher?
After Servicing:
• Check for any water leakage. Perform a test 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. This may result in personal injury and shorten the product life.
• If it seems that grounding is needed due to water or moisture, make sure to run grounding wires. Failure to do so may result in electric shock due to electric leakage.
• Check the assembled status of the parts. They must be the same as before servicing.
• Check whether the product is level with the floor and secured to the cabinet and under the counter. Vibrations can shorten the life of the product.
What is the Waterwall linear wash system?
It’s a new cleaning system designed to get dishes sparkling every time.
• High pressure, consistent wall of water cleans hard-to-reach places.
• No need to pre-rinse.
• Available on full or half cycle.
What is Target zone washing?
This feature provides a targeted wash for hard-to-clean pots and pans.
• Controls water pressure, temperature, and time.
• Allows selection of the right or left target zone.
How does the Half load cycle work?
This allows washing smaller loads without wasting water.
• No need to wait until you have a full load.
• Choose either the upper or lower rack.
• Saves on energy.
What is the Third rack with flex tray?
It’s a removable roll-up silverware tray designed for easy unloading.
• Silverware lays flat for better cleaning.
• Perfect for oversized or hard-to-fit items.
• Easily roll up and remove for easy unloading.
What is the Adjustable racking system?
This feature offers a flexible design for more space.
• Frees up more space on the top rack for tall and oversized items.
What does Speed boost do?
This option helps wash dishes in less time.
• Increased water pressure reduces wash time.
• Perfect for everyday family dishes.
How does the Digital leakage sensor provide worry-free dishwashing?
• It can sense a leak of only 1 1/2 ounces.
• It shuts itself off before water can escape and cause floor damage.
• It protects against water-related damage and provides peace of mind.
What are the general specifications for the DW80H99*, DW80J99*, and DW80J75* Series dishwashers?
| 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 |
| Standard amount of used water | 6.34 ~ 2.85 gallon (24 ~ 10.8 ℓ), Normal Cycle |
| Size (W×D×H) | 23 7/8″ x 25″ x 33 7/8″ inch (605 x 636 x 860 mm) |
What accessories are included with the dishwasher?
Accessory parts include: User/Installation manual, Installation Kit, Drain Hose, Holder Drain Hose, Hose Clamp, Kick Plate.
Some models may also include a 3rd rack, 3rd rack PAD, or Wine Rack.
What are the key differences between the NEW MODEL dishwashers (DW80H99* / DW80J*) and the older MODEL (DW80F*)?
Here’s a comparison based on the provided table:
Design Specifications:
• Panel Control/Color: Varies (Silver, Silver/Black/White).
• Control Type: All listed models use Touch controls.
• Wine Rack: Included (O) only on DW80J9945US among the new models listed. Not included (X) on others listed.
• Handle Type: Varies (Bar, Pocket, Bar/Pocket).
• Basket Handle: New models predominantly Blue + STS or Gray. Older models Gray + STS or Gray.
Function Specifications:
• Soil Detection Sensors: Included (O) on all listed models.
• Drying Method: All use Air diffusion condensing.
• Basket Height Adjustment: New models use One-touch. Older models use One-touch or 2-stage.
• Leakage Sensor: Included (O) on all listed models.
• Rail Type: New models use Soft Rail. Older models use “C” Rail.
Programs & Options:
• Programs: New models typically have 5 or 6 programs (Auto, Normal, Heavy, Delicate, Express60″, Self Clean – varies by model). Older models have 6 or 4 (Normal, Heavy, Delicate, Pot & Pans, Quick+, Smart Auto – varies by model).
• Options: New models often feature Half Load wash, Targeted zone, Sanitize, Dry+, Delay start, Speed boost (varies by model). Older models feature Delay Start, Sanitize, Half Load, Storm Wash, Child Lock, Start & Drain (varies by model).
Note: Features vary significantly between specific model codes. Refer to the detailed comparison table for specifics on each model listed.
What optional or included parts might come with the dishwasher for installation?
| Part | Code | QTY | Remarks |
|---|---|---|---|
| ASSY PACKING PARTS | DD98-01019A | 1 | Provided with the dishwasher |
| HOSE DRAIN-OUT | DD67-00116A | 1 | Provided with the dishwasher |
| ELBOW | – | 1 | Sold separately |
| WATER SUPPLY LINE (Flexible STS supply line is recommend) | – | 1 | Sold separately |
| AIR GAP | – | 1 | Sold separately |
| RUBBER CONNECTOR | – | 1 | Sold separately |
| HOSE CLAMP | – | 1 | Sold separately |
| STRAIN RELIEF | – | 1 | Sold separately |
What tools are recommended for removal and reassembly?
1. Adjustable Wrench
2. Open-end Wrench (1-7/16″ for Leg)
3. Vice pliers
4. Others: Screwdriver (Philips, flat, Torx T20, Small flat), nipper, long nose pliers
5. Nut Driver (10mm for Heater bracket Nut)
What steps should be taken to prepare 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.
Warning: Always turn off 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.
Note: 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.
Note: Before servicing, make sure to remove all items from inside of the dishwasher, including the wash racks.
Caution: 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.
How do I remove the upper rack (For DW80H99* and DW80J99* Series)?
1. Pull the upper rack out from the tub until it is fully extended.
2. Hold down the holder rails on both sides to release the upper rack.
3. Slide the upper rack out to the end of one holder rail, and then lift it up.
4. Repeat the steps above with the other holder rail.
How do I disassemble the Main PBA?
Preparation:
• Make sure to disconnect the power.
• Disassemble the housing-right.
Steps:
1. Remove the one (1) screw holding the assy-base.
2. Push the main PBA board toward the left and remove it.
3. Remove the two (2) screws of the PBA case and pull out the main PBA cover carefully.
4. Remove the seven (7) wire connectors from Main PBA.
5. Remove the two (2) screws on the PBA board.
6. Pull out the main PBA board carefully. (Note: Lift the main PBA board up carefully as it hangs on the main PBA case by two hooks).
How do I disassemble the Inverter PBA?
Preparation:
• Make sure to disconnect the power.
• Disassemble the housing-right.
• Disassemble the main PBA.
Steps:
1. Remove the two (2) screws holding the assy-base.
2. Pull out the Inverter PBA board.
3. Remove the one (1) screw on the Inverter PBA case and pull out the inverter PBA cover carefully.
4. Remove the four (4) wire connectors from the inverter PBA.
5. Remove the two (2) screws on the inverter PBA board.
6. Pull out the inverter PBA board carefully. (Note: Lift the inverter PBA board up carefully as it hangs on the inverter PBA case by two hooks).
How do I disassemble the Door Outer panel (DW80H9950US/DW80H9940US)?
Preparation:
• Make sure to disconnect the power.
• Remove the lower basket in the dishwasher.
• Cover the Assy sump with a towel to prevent losing screws.
Steps:
1. Open the door completely. Remove the 10 screws holding the door outer and control panel in place. (Do not remove the 2 screws holding the control panel, indicated in the diagram).
Note: Before removing parts, place a cushioned mat on the floor. After removing screws, hold the door inner to prevent it from closing suddenly.
Caution: Do not place removed screws on the door inner; they may fall into the sump assy.
2. Pull out the door outer carefully.
How do I disassemble the Door Outer panel (DW80H9970US/DW80H9930US)?
Preparation:
• Make sure to disconnect the power.
• Remove the lower basket in the dishwasher.
• Cover the Assy sump with a towel to prevent losing screws.
Steps:
1. Open the door completely. Remove the 6 screws holding the door outer and control panel in place. (Leave the six (6) screws in the circled area).
Note: Before removing parts, place a cushioned mat on the floor. After removing screws, hold the door inner to prevent it from closing suddenly.
Caution: Do not place removed screws on the door inner; they may fall into the sump assy.
2. Pull out the door outer carefully.
How do I disassemble the Panel Control (DW80H9950US/DW80H9940US)?
Preparation:
• Disassemble the door outer.
Steps:
1. Remove the 2 screws holding the panel control.
2. Remove the panel control from the door inner.
3. Remove the seven (7) wire connectors from Panel control.
4. Remove the two (2) screws holding the panel control and remove the LED display from the control panel.
5. Remove the one (1) screw holding the panel control and remove the LED display from the control panel.
6. The assy-module is fixed to the panel control with several tabs. Use a flat tip screwdriver to gently pry the tabs.
How do I disassemble the Panel Control (DW80H9970US, DW80J99* Series, DW80J75* Series)?
Preparation:
• Disassemble the door outer.
Steps:
1. Remove the six (6) screws holding the assy-door front.
2. Remove the assy-door front from the door inner.
3. Remove the eight (8) wire connectors from Panel control.
4. Remove the one (1) screw holding the panel control and remove the LED display from the panel control.
5. The assy-module is fixed to the panel control with several tabs. Use a flat tip screwdriver to gently pry the tabs.
6. Remove the two (2) screws holding the assy-door front and pull out the panel control.
Additional steps for DW80H9970US:
7. Remove the two (2) screws holding the assy-door front. Open the hooks using a flat tip screwdriver and then pull out the handle door.
8. Remove the two (2) screws holding the cover handle. Open the hooks using a flat tip screwdriver then pull out the window display.
Additional steps for DW80H9930US, DW80J99* Series, DW80J75* Series (similar steps):
7. (Similar to step 6 above, removing panel control).
8. Remove the two (2) screws holding the assy-door front. Open the hooks using a flat tip screwdriver and then pull out the handle door.
9. Remove the two (2) screws holding the cover handle.
10. Remove the two (2) screws holding the cover handle. Open the hooks using a flat tip screwdriver and then pull out the window display.
How do I disassemble the Switch Door?
Preparation:
• Disassemble the door outer.
Steps:
1. Remove the one (1) wire connector from Panel control.
2. Remove the two (2) screws holding the door inner.
(Note: The image shows removal of the latch assembly component after removing screws).
How do I disassemble the Duct Dry system?
Preparation:
• Disassemble the door outer & Assy – panel control. Refer to respective disassembly sections.
Steps:
1. Remove the two (2) wire connectors from thermal actuator & Dry Fan motor.
2. Open the door & Remove the three (3) screws holding the bracket cover fan and Assy – Duct Vent.
3. Remove the cover fan by rotating counter clockwise. (Use a jig or needle nose pliers carefully).
4. Remove the four (4) screws to release the bracket door inner, rubber skirt and remove Assy – duct dry. (Be careful as the duct condenser touches the bracket door inner and cushion duct).
5. Remove the seal fan from the cover fan.
How do I disassemble the Dispenser – slide?
Preparation:
• Disassemble the door outer. Refer to the “door outer” disassembly section.
Steps:
1. Remove the two (2) connectors from the dispenser.
Caution: Be careful not to break them during disassembly.
2. The dispenser-slide is fixed to the door inner with several tabs. Use a flat tip screwdriver to gently pry the tabs.
3. Push it to the inside carefully. (Be careful as the tub front is sharp).
How do I disassemble the Lever Door?
Steps:
1. Remove the two (2) screws holding the trim-up to the assy-tub.
2. Remove the trim-up from the assy-tub.
3. Remove the one (1) screw holding the lever door to the assy-tub.
4. Remove the lever door from the assy – tub.
How do I disassemble the Assy Case Brake?
Preparation:
• Make sure to disconnect the power, water supply, and drain hose connections.
• Remove the upper, lower baskets and 3rd rack in the dishwasher.
• Pull out the dishwasher carefully.
Steps:
1. Remove the two (2) screws of the Housing Left.
2. Remove the Housing Left.
Caution: Make sure to wear gloves when removing it. Be careful as the steel plate is sharp and may cut you.
3. Remove cover brake by rotating (counterclockwise). Use a jig or needle nose pliers. (Be careful as it is easily damaged).
4. Loosen the four (4) clamps and release the four (4) hoses from the Assy case brake and remove the two (2) wire connectors from Assy case brake.
Caution: Water remaining in the Assy case sensor and Assy case break will come out. Lay a towel on the floor to absorb any water that may come out.
How do I disassemble the Assy – Motion (Waterwall components)?
Preparation:
• Make sure to disconnect the power, water supply, and drain hose connections and remove the water in each nozzle.
• Remove the upper, lower baskets and 3rd rack in the dishwasher.
• Pull out the dishwasher carefully.
Steps:
1. Remove the assy-vane from the assy-rail. (Remove it carefully so the part is not damaged).
2. Remove the cap rubber from assy-motion by using a small flat tip screwdriver.
3. Remove the two (2) screws holding the assy-cover nozzle.
4. Remove the assy-motion from the assy-cover nozzle.
5. Remove the one (1) screw holding the assy-nozzle-lower and remove the assy-rail.
Caution: When you remove the assy-rail, pull up the front of cover nozzle first. And then pull up the end of it.
How do I disassemble the Assy Duct (Nozzle)?
Preparation:
• Remove the lower basket in the dishwasher.
• Make sure to remove the water in each nozzle.
Steps:
1. Upper Nozzle: Remove it by rotating the holder counterclockwise.
2. Middle Nozzle: Remove it by rotating the holder from the upper basket counterclockwise.
3. The assy-duct is fixed to the assy-tub with several tabs. Use a flat tip screwdriver to gently pry the tabs.
4. Remove the assy-duct from the assy-tub and assy-cover nozzle.
How do I disassemble the Drain Hose?
Preparation:
• Disassemble the Assy case brake. Refer to the Assy case brake disassembly section.
Steps:
1. Loosen the clamp and release the hose from the Assy-case brake.
2. Loosen the clamp and release the hose holder and pull out the drain hose.
3. Locate the hose holder on the dishwasher backside. Push the one (1) hook of the hose holder inwards and rotate it counter clockwise using a flat tip screwdriver.
4. Push the hose holder carefully into the base.
5. Loosen the clamp and release the holder hose.
How do I disassemble the Water Valve?
Preparation:
• Disassemble the bracket front lower & frame left. Refer to the “bracket front lower” disassembly section.
Steps:
1. Remove the four (4) screws and ground wire screw from the inlet valve.
2. Lift up the inlet valve and disconnect the inlet valve wire connector.
3. Release the hose clamp and disconnect hose.
Caution: When removing the hose clamp, hold it tightly as it’s under tension and can become a projectile if released suddenly.
Caution: There will be residual water in the valve and valve hose. Use a towel to absorb the water when removing the valve.
How do I disassemble the Cover base?
Preparation:
• Make sure to disconnect the power, water supply, and drain hose connections.
• Remove the upper, lower and 3rd baskets in the dishwasher.
• Pull out the dishwasher carefully.
Steps:
1. Lay the dishwasher down on its back. Release the one (1) screw securing the base and cover base in place.
2. Pull out the cover base and release the leakage sensor connector.
3. Remove the leakage sensor from the shutter by unfastening the one (1) screw.
How do I disassemble the Frame front?
Preparation:
• Make sure to disconnect the power, and water supply.
• Remove the upper & lower baskets in the dishwasher.
• Pull out the dishwasher & carefully lay the dishwasher down on its back.
• Remove the water supply line (& elbow).
Caution: Make sure to turn the water supply off before removing the water supply line.
Steps:
1. Remove the four (4) screws.
2. Remove 2 hooks (Use a pair of needle nose pliers or flat screwdriver).
3. To remove the bracket front lower entirely, grab the top of the bracket front lower (on both sides) and pull the top out. At the same time, push the bottom of the bracket front lower (on both sides) in towards the unit.
How do I disassemble the Door Spring?
Preparation:
• Disassemble the housing-left & right.
Steps:
1. Remove the spring etc door from the assy-base by using a needle nose pliers. (Use a tool such as needle nose pliers carefully to avoid damage from the spring).
2. Remove the bracket spring and holder rope door from the spring door.
How do I disassemble the Assy Cover base?
Preparation:
• Make sure to disconnect the power, and water supply.
• Remove the upper & lower baskets in the dishwasher.
• Pull out the dishwasher & carefully lay the dishwasher down on its back.
• Remove the water supply line (& elbow).
Caution: Make sure to turn the water supply off before removing the water supply line.
Steps:
1. Remove the (1) screw.
2. Remove the leakage sensor from the cover base by unfastening the one (1) screw.
How do I disassemble the Rear Leg + Adjust bar?
Preparation:
• Make sure to disconnect the power, water supply, and drain hose connections.
• Remove the upper & lower baskets in the dishwasher.
• Pull out the dishwasher & lay the dishwasher down on its back.
• Remove the Assy cover base.
Steps:
1. Turn the rear leg adjusting screw clockwise until the rear adjusting leg is fully extended.
2. Remove the screw that is holding the case gear to the unit.
3. The case gear is made up of a worm gear and helical gear. Pull out the worm gear first.
4. Grab the adjusting bar and pull it out while pushing the helical gear from the backside. (Note: The adjusting leg bar is attached to the base by a hook).
How do I disassemble the Thermister?
Preparation:
• Disassemble the frame front. Refer disassembly frame front section.
Steps:
1. Remove the two (2) screws securing the thermistor.
2. Disconnect the wire terminal connected to the thermistor.
3. Pull it out carefully. (Note: The thermistor has a seal).
How do I disassemble the Turbidity sensor?
Preparation:
• Disassemble the frame front.
• Refer disassembly ‘assy cover base’.
Steps:
1. Disconnect the wire terminal connected to the turbidity sensor.
2. Gently pry up the tabs on the turbidity sensor and pull it out of the sump assembly.
Caution: Carefully use a flat tip screwdriver to pry the tabs on the sensor as the tabs are fragile and can be damaged easily.
Note: Inspect the “O” ring seal around the sensor. If it is damaged in anyway, replace the “O” ring seal.
How do I disassemble the Circulation pump?
Preparation:
• Disassemble the ‘cover base’. Refer to the ‘Cover base’ disassembly section.
Steps:
1. Disconnect the Circulation pump connector ((3) wires: Heater wire, ground wire, motor wire).
2. Release Damper BLDC from base using a driver or hand.
Caution: Remove all water from the sump assembly before removing the pump. Failure to do so will cause water to be released onto the floor. Use a towel to cover PBA Case & Electric parts to prevent water damage.
3. Move the inlet Clamp to center of hose inlet and release the hose from ass’y sump.
4. Loosen the outlet clamp (left side in picture) and release the hose from the Assy sump.
5. Pull out carefully.
How do I disassemble the Base?
Preparation:
• Disassemble the housing L/R and assy-case brake. Refer to each disassembly section.
Steps:
1. Remove the two (2) screws on the plate base both-sides (in Red circle).
2. Carefully lay the dishwasher down on its back.
3. Remove the cover assy-cover pcb and assy-cover pcb-inverter and disconnect the wire connectors.
4. Disconnect the wire connectors from Assy Sump.
5. Pull out the plate base slightly.
6. Remove other parts as needed to remove the base (Ex. Frame front, Cover harness etc.).
How do I disassemble the Ass’y Guide water?
Preparation:
• Disassemble the ‘cover base’. Refer to the ‘Cover base’ disassembly section.
Steps:
1. Disconnect the Geared motor wire and Micro switch wire.
Caution: Remove all water from the sump assembly before removing the pump. Failure to do so will cause water to be released onto the floor. Use a towel to cover PBA Case & Electric parts to prevent water damage.
2. Loosen the C-pump outlet clamp (left side in picture) and release the hose from the Assy sump. Then, loosen the Hose Drain-in clamp and release the hose from sump.
3. Loosen the Hose Circulation clamp and release the hose from Assy guide water.
4. Remove the Assy guide water by gently pulling the locking tab (2) on the Assy guide water and sump. Then pull out carefully.
How do I disassemble the Motor AC drive & Switch micro?
Preparation:
• Disassemble the ‘cover base’. Refer to the “Cover base” section.
• Disassemble the Assy guide water. Refer to the ‘Assy guide water’ section.
Caution: Remove all water from the sump assembly before removing the pump. Failure to do so will cause water to be released onto the floor. Use a towel to cover PBA Case & Electric parts to prevent water damage.
Steps for Motor AC Drive:
1. Remove the distributor motor connector.
2. Remove the Cover distribute by gently prying up the locking tab on the assy. Then rotate the pump clockwise until it releases from the assy sump.
3. Remove the two (2) screws that hold the distributor motor in place.
Steps for Switch Micro (requires Motor AC Drive disassembly first):
Caution: Remove the ‘micro switch’ by gently prying up the locking tab (2) on the cover distribute. Then release from the cover distribute.
How do I disassemble the Drain pump (MOTOR BLDC PUMP)?
Preparation:
• Disassemble the ‘cover base’. Refer to the ‘Cover base’ disassembly section.
Steps:
1. Disconnect the drain pump connector.
2. Remove the drain pump by gently pushing the locking tab on the pump. Then rotate the pump clockwise until it releases from the sump. Then pull the pump out.
Caution: Remove all water from the sump assembly before removing the pump. Failure to do so will cause the water to be released onto the floor.
What checkpoints should be reviewed after finishing service?
1. Check the assembled status of the parts – they must be the same as before servicing.
2. Check whether the product is level with the floor and secured to the cabinet and under the counter.
3. Check for any water leakage by performing a test using the standard (normal) cycle.
4. Ensure all safety grounding circuits are complete.
5. Ensure all electrical connections are secure.
6. Ensure all access panels are in place.
How do I enter Service Inspection Mode?
1. Press the Power button.
2. Press and hold the [Half Load] + [Hi-Temp Wash] buttons simultaneously for 3 seconds.
– All LEDs will turn on for 2 seconds and then turn off.
– The display will show the software version for 2 seconds.
– Then, the display will show “0”.
How do I activate the Error Code Check Mode within Service Inspection Mode?
1. Enter Service Inspection Mode.
2. Press the [Start] button.
– The display will show the most recent error code.
– If there is no error code, the display will show “0”.
– Refer to the “Error Code Table” for details on specific codes.
How do I activate the Overall Load Test Mode within Service Inspection Mode?
1. Enter Service Inspection Mode.
2. Press the [Normal] button.
– All loads will operate sequentially in the order specified in the “Overall Load Test Mode Table”.
– During this mode, button inputs except [Power] are ignored.
– The display shows the step number.
– Pressing [Power] cancels the mode.
How do I activate the Individual Load Test Mode within Service Inspection Mode?
1. Enter Service Inspection Mode.
2. Press the [Express 60] button.
– The buzzer sounds, and the display shows “0”.
3. Press the [Start] button repeatedly to cycle through and activate individual loads according to the “Individual Load Test Mode Table”.
– Each press activates the next load in sequence (0 -> 1 -> 2 … -> F).
– Pressing [Power] cancels the mode.
How do I exit Service Inspection Mode?
Press the [Power] button to turn off the dishwasher. This will cancel any active service mode.
What do the error codes mean in Service Inspection Mode?
Refer to the Error Code Table provided in the Troubleshooting section of the service manual for detailed explanations of each error code (e.g., tE1 for Thermistor error, LE for Leakage error, HE for Heater error, etc.) and their corresponding check methods and potential solutions.
Note: The full error code table with detailed checks is typically found starting around page 54 of the service manual but is not included in the provided excerpt.
What is the sequence of operations in the Overall Load Test Mode?
The Overall Load Test Mode activates components sequentially. Refer to the “Overall Load Test Mode Table” in the service manual (typically around page 69) for the specific order, duration, and display indication for each step, including checks for water supply, drain pump, circulation pump, heater, dispenser, fan motor, etc.
Note: The detailed table is not fully included in the provided excerpt.
Which loads can be tested individually in the Individual Load Test Mode?
The Individual Load Test Mode allows testing specific components. Refer to the “Individual Load Test Mode Table” in the service manual (typically around page 71) for the list of testable loads corresponding to the display numbers (0-F), such as Drain Pump, Water Valve, Circulation Pump, Heater, Dispenser, Fan Motor, Zone Control Motor, etc.
Note: The detailed table mapping numbers to specific loads is not fully included in the provided excerpt.
How do I remove the Sump assembly?
Preparation:
Disassemble the ‘assy motion’, ‘cover base’, ‘Rear leg + Adjust bar’, and ‘Filter micro, Filter fine’.
Steps:
1. Remove the parts which are connected to the Assy sump. This includes connectors, the drain pump, and screws.
2. Remove the four (4) screws located on the upper side of the sump using a T20 driver tip.
3. Carefully pull the Assy sump out from the Assy tub.
Caution: Ensure all water is removed from the sump assembly before removing the pump. Failure to do this will cause water to be released onto the floor.
What checkpoints should be verified after finishing service on the dishwasher?
1. Check the safety device: Verify the operation of the door lock switch. Ensure it locks while running and stops the dishwasher when unlocked.
2. Use authentic Samsung replacement parts only: If any part is not authentic, replace it.
3. Handling wires: Check if wires are loose, too tight, connected correctly, well bound with tape, and properly clamped.
4. The state of screws and nuts: Check if screws and nuts are fastened correctly and with the specified torque.
5. Remove foreign material: Check for soil, wire scraps, screws, etc., inside the dishwasher, especially entering the sump/disposer.
6. Check for water leakage: Inspect the hose connector, door, case sump (drain motor, circulation motor, heater, thermistor, turbidity sensor, distributor motor), and water supply/drain hoses for leaks.
7. Check the power cable: Look for damage to the power cable or outlet. Verify correct voltages.
8. Check leveling: Ensure the dishwasher is level.
9. Check the installation location: Confirm the location is flat and stable.
How do I check the software version on a DW9900H series dishwasher?
1) Press the ‘Zone booster L’, ‘Zone booster R’, and ‘Power key’ simultaneously to enter test mode.
2) Press the ‘Auto key’ and observe the display for the software version.
How do I recall check codes on a DW9900H series dishwasher (S/W Version 7134~)?
1) Press the Power button to turn the dishwasher on.
2) Press and hold the ‘Normal’ and ‘Lower key’ simultaneously for 7 seconds.
What do the dishwasher check codes mean (S/W ver. ~7133)?
| Code | When occur | Symptom | Possible Causes |
|---|---|---|---|
| 4E | – Number of detected water supply pulses is less than 10 within 20 seconds after water is supplied. – Number of detected water supply pulses is less than 100 within 80 seconds after water is supplied. – Target water level is not reached within 5 minutes after water is supplied. |
– If pulse count <10 in 20s, water supply valve turned on once and waits. – All driving parts except drain stop. Draining (20 seconds ON/ 5 seconds OFF) performed for 3 minutes. |
– Water supply pressure is low. – Water supply valve is closed. – Aqua stop is out of order. – Case brake fails to detect the pulse. |
| 5E | – Power of the drain pump power exceeds 15W during operation, even after 3 attempts. | – The driving part stops. | – Foreign object entered drain pump; pump stuck. – Drain pump is out of order. – Main PBA is out of order. – Inverter PBA is out of order. |
| PE | – Location not detected for 2 minutes after synchronous motor operation (1 min in Test Mode). – In cleaning section, location not detected for 3 minutes. |
– Draining (20 seconds on/5 seconds off) performed for 3 minutes. | – Synchronous motor is out of order. – Location in the cam is incorrect. |
| tE | – Temperature sensor data output ≥ approx 4.5V or ≤ approx 0.2V. – Water temperature detected ≤ -30°C for 30 seconds during heater operation. |
– Draining (20 seconds on/5 seconds off) performed for 3 minutes. | – Thermistor is out of order. |
| HE-1 | – Start temp saved 30s after heating. If temp change ≤ 4°C for 10 min, heater relay off 1s, restarts heating. If temp change ≤ 4°C for another 10 min, HE-1 occurs. | – Draining (20 seconds on/5 seconds off) performed for 3 minutes. | – Heater is out of order. – Heater is improperly connected. |
| HE | – Temperature measured ≥ 80°C for 3 seconds. | – Driving part stops and main relay turned off. | – Heater is out of order. – Thermistor is out of order. |
| bE2 (No Display during washing) | – Button pressed and held ≥ 30 continuous seconds. | – Normally working at washing mode. | – Touch button out of order. – Object on the touch button. |
| bE3 (No Display during washing) | – IC communications between Sub PBA and touch button fails. | – Normally working at washing mode. | – Touch button is out of order. – Sub PBA or touch button PBA not properly connected. |
| AE (No Display during washing) | – Communications between main PBA and sub PBA fails for 24 seconds (6 sec in Test Mode). | – Normally working at washing mode. | – Main PBA or sub PBA is out of order. – Communications connection not properly connected. |
| AE6 | – No response from inverter PBA for 3 sec, Inverter RELAY OFF for 2 min. After 3 repeats, displays check code. | – The driving part stops. | – Main PBA or Inverter PBA is out of order. – Communications connection not properly connected. |
| LE | – Water leakage sensor data ≤ 3V for 3 seconds. | – If sensor data >3V detected after draining (20s on/5s off) for 3 min, drain pump off. If >3V detected again, draining for 3 min, sensed data checked again. | – There is a water leak. |
| OE | – Overflow sensor data ≤ 3V for 5 seconds. | – If sensor data >3V detected after draining (20s on/5s off) for 3 min, drain pump off. If >3V detected again, draining for 3 min, sensed data checked again. | – Case brake fails to detect the pulse. – Valve water is out of order. |
| 1E | – Case1 HPS: Cond 1) HPS not measure high level post water supply. Cond 2) 2-1) HPS low level 3s during wash, check again. If high, normal. If repeats 5x, 1E occurs. 2-2) HPS low level 3s during wash, check again. If low, add water. If low after 2x add water, 1E occurs. Case2 Circ Pump: Low water level detected via power consumption. | – Draining (20 seconds on/5 seconds off) performed for 3 minutes. | – Motor is out of order. – HPS is out of order. – Bubbles in the tub. – Filter micro is clogged. |
| 3E | – Cond 1) Main receives Circ pump check code, motor stops/restarts. If 11x, motor off 5 min. 3rd rest, code occurs (Heater off, ON after 10s circ motor). Cond 2) Wash/Rinse: Target RPM ≥2600 & Circ pump speed ≤2400rpm for 3s, stops. Retries 2x in 3s. If 3x, Inverter off, retry 5 min. 3rd rest, code occurs (Ignored if low water). | – 20 seconds ON/ 5 minute OFF. Drain for 3 minutes. | – Foreign object in Circulation pump (stuck). – Circulation pump out of order. – Main PBA out of order. – Inverter PBA out of order. |
| 4E5 | – Detected water supply pulses are 200 at Non-water supply mode. Repeats valve on(1s)/off(1s) 2x. | – Draining (20s on/5s off) for 3 min. If >200 pulses detected again, repeat draining. | – Water valve out of water. |
| 9E1/9E2 (Display changes to pause) | – Blackout or DC Link voltage high/low (abnormal voltage). | – The driving part stops. | – High or Low voltage is supplied. |
| 7E | – Case1) Reset pos sense 10s, vane motor 1s Off, re-op. Code after 3 retries. Case2) Reset pos sense 25s. Code after 3 retries. Case3) Vane initial->initial pos time ≤ 21s, code occurs. | – Draining (20 seconds on/5 seconds off) performed for 3 minutes. | – Motor gear is out of order. – Sensor vane is out of order. – Vane is blocked. |
What do the dishwasher check codes mean (S/W ver. 7134~)?
| Check code Display | Check code Recall | When occur | Symptom | Possible Causes |
|---|---|---|---|---|
| 4C | 4C | – Detected water supply pulses < 10 within 20s after water supply. – Target water level not reached within 60 minutes after water supply. |
– If pulse count <10 in 20s, water supply valve on once, waits. – All driving parts except drain off. Draining (20s ON/ 5s OFF) for 3 min. |
– Water supply pressure low. – Water supply valve closed. – Aqua stop out of order. – Case brake fails to detect pulse. |
| No display | 5C | – Drain pump power exceeds 15W even after 3 operations. | – Keep going remained cycle. | – Foreign object in drain pump (stuck). – Drain pump out of order. – Main PBA out of order. |
| 5C | 5C1~5C5 | – Drain pump check code occurred 11 times, 5 min pause/retry. Pause occurred 3 times. | – Driving parts stop. – Retry until 2nd time, 3rd time display check code. |
– Inverter PBA out of order. |
| No display | PC | – Location not detected 2 min after sync motor op. (After 1 min, Sync stop. After 1s retry, c-pump stops too). | – Vane move to reset location, keep going remained cycle with heater off. | – Synchronous motor out of order. – Location in cam incorrect. |
| No display | tC | – Temp sensor output ≥ ~4.5V or ≤ ~0.2V. – Water temp detected ≤ -30°C for 30s during heater op. |
– Heater off, keep going remained cycle. – No Rinse aid during rinse cycle. – If C-pump RPM target 3000, change to 3000rpm. |
– Thermistor out of order. |
| No display | HC1 | – Start temp saved 30s after heating. If temp change ≤ 4°C for 10 min, heater relay off 1s, restarts. If temp change ≤ 4°C for another 4-10 min, HC1 occurs. | – Keep going remained cycle with heater off. | – Heater out of order. – Heater improperly connected. |
| HC | HC | – Temp measured ≥ 80°C for 3 seconds. | – Driving part stops, main relay turned off. | – Heater out of order. – Thermistor out of order. |
| No display | bC2 | – Button pressed and held ≥ 30 continuous seconds. | – Keep going remained cycle. | – Touch button out of order. – Object on touch button. |
| No display | bC3 | – IC communications between Sub PBA and touch button fails. | – Keep going remained cycle. | – Touch button out of order. – Sub PBA or touch button PBA not properly connected. |
| No display | AC | – Communications between main PBA and sub PBA fails for 24s (6s in Test Mode). | – Keep going remained cycle. | – Main PBA or sub PBA out of order. – Communications connection not properly connected. |
| No display, change to pause | AC6 | – No response from inverter PBA for 3s, Inverter RELAY OFF 2 min. After 3 repeats, displays check code. | – Inverter Relay 2min off, 3sec on (until find response). – Display change to pause. |
– Main PBA or Inverter PBA out of order. – Communications connection not properly connected. |
| LC | LC | – Water leakage sensor data ≤ 3V for 3 seconds. | – Main relay off. – If sensor data >3V detected after draining (20s on/5s off) for 3 min, drain pump off. If >3V detected again, draining for 3 min, sensed data checked again. |
– There is a water leak. |
| OC | OC | – Overflow sensor data ≤ 3V for 5 seconds. | – If check code occurred during set op, 3x ‘3min drain’ retry, display “OC” (No op condition, display “OC” w/o retry). – During 3 retries, display ‘pause’. |
– Case brake fails to detect pulse. – Valve water is out of order. |
| 3C | 3C, 3C1~3C5 | – Cond 1) Main receives Circ pump check code, motor stops/restarts. If 11x, motor off 5 min. 3rd rest, code occurs (Heater off, ON after 10s circ motor). Cond 2) Wash/Rinse: Target RPM ≥2600 & Circ pump speed ≤2400rpm for 3s, stops. Retries 2x in 3s. If 3x, Inverter off, retry 5 min. 3rd rest, code occurs (Ignored if low water). | – Driving part stops. – Retry until 2nd time, 3rd display check code. |
– Foreign object in Circulation pump (stuck). – Circulation pump out of order. – Main PBA out of order. – Inverter PBA out of order. |
| No display | 4C5 | – Detected water supply pulses are 200 at Non-water supply mode. Repeats valve on(1s)/off(1s) 2x. | – Keep going remained cycle. | – Water valve out of water. |
| No (Display, change to pause) | 9C1/9C2 | – Blackout or DC Link voltage high/low (abnormal voltage). | – Driving part stops. – Display change to pause. |
– High or Low voltage is supplied. |
| No display | 7C | – Case1) Reset pos sense 10s, vane motor 1s Off, re-op. Code after 3 retries. Case2) Reset pos sense 25s. Code after 3 retries. Case3) Vane initial->initial pos time ≤ 21s, code occurs. | – Distribute change Middle + top, then keep going remained cycle. – If Vane check code detected during Distribute motor driving, Stop C-pump, keep going remained cycle. – During Remained cycle, no operating Vane anymore. |
– Motor gear out of order. – Sensor vane out of order. – Vane is blocked. |
How do I enter and use Service Inspection Mode (SVC Test mode)?
Entering Test Mode: Press the ‘Auto’ + ‘Delicate’ + ‘Power’ buttons simultaneously for two seconds. All LEDs display for two seconds, then the Software Version appears.
Changing Modes: Press the ‘Normal’ button to cycle through modes (n1 -> n2 -> … -> nA -> Repeats). Pressing ‘Auto’ key also cycles modes. Mode starts automatically if the door is closed; if open, ‘dE(dC)’ code occurs.
Initial Display: All displays turn on for 1 second. If no key pressed, version displays.
Viewing Versions: Default is Main Version. Press keys for others:
• Normal: Sub Version
• Heavy: Inverter PBA SW version
• Delicate: Sub Touch IC SW Version
• Express60: Model Option
• Dry+ (while pressing): Set dry default option (ON: setting, d OFF: clear)
SVC Test Modes (n1 to nA):
| Item | Related Parts | Symptoms | Description |
|---|---|---|---|
| Entering Test Mode | N/A | N/A | Press Auto Key, Delicate Key and Power keys at the same time. |
| Changing the mode | Display LED | N/A | Press Auto key: All Led Display → Version Display → n1 → … → nA…(Repeats). Starts automatically if door closed. ‘dE(dC)’ if door open. |
| Displaying all | Display LED | N/A | Upon entering Test Mode, all displays on for 1 sec. Then version displayed if no key pressed. |
| Displaying the program version | version | N/A | Default: Main Version. Press keys for others (see Viewing Versions above). |
| n1 (nA) | Drain pump, Inlet Valve, Flow Meter, Water Level Sensor, Turbidity | Water supply check, Turbidity check | “nA” displayed. Drain 30s. Water supply 4L. If incomplete, 4E(4C) occurs. Turbidity sensor detects after supply. Displays “tu” & voltage (e.g. 3.2V → 32). If reference voltage not reached in 10s, E3(C3) occurs. |
| n2 (nb) | Circulation Motor | A nozzle does not inject water. | Runs circulation motor (BLDC: 3400 RPM). “nb” if normal level, “n2” if low. “lower all” 1 min → “Middle up” 1 min. |
| n3 (nC(nL)) | Circulation Motor | A nozzle does not inject water. | Runs circulation motor (BLDC: 2600 RPM). “nC(nL)” if normal level, “n3” if low. “lower all” 1 min → “Middle up” 1 min. |
| n4(nd) | Circulation Motor, Heater, Thermistor, Dispenser | Heater check | Circ motor (3400 RPM) runs. Heater On after 10s pump (if normal level). Heater off if low level. Heater off after 3 min or temp ≥ 60°C. Dispenser runs 1 min at start. “Lower all” 3 min → “Middle up” 3 min. |
| n5 | Distributor Motor | Distributor function check | Circ motor runs. RPM displayed. Press Normal key to change RPM (1201-3400). Press Heavy key to change distributor pos (1:Mid+Up → 2:Low R→ 3:Low All → 4:Low L). |
| n6 | Distributor Motor | Distributor function check | Circ motor (3400 RPM) runs. Sync motor alternates lower right/left at 1 min intervals. |
| n7 | Dry Fan Motor | The Dry Fan motor does not work. | Runs vent motor and thermal actuator of dryer unit. |
| n8 | Inlet valve, Overflow Sensor | Over level water check | Water supplied until overflow detected. “oF” displayed if detected. |
| n9 | Drain Pump | Drain check | Runs drain pump 60s (25s on / 2s off). If incomplete, 5E(5C) occurs. Displays “nP” when complete. |
| nA | Inlet Valve, Circulation Motor, Dry Fan Motor, Drain Pump, Heater, Half Load Motor | Key-based operations | 1. Lower Key: Lower Led On. Dry Fan(Auto) → Dry Actuator(Normal) → Dispenser Actuator(Heavy) → Dry heater(Delicate) Off. 2. Booster left Key: Booster left LED On. Drain pump(Auto) → Circ Motor(low)/BLDC(Normal) → Circ Motor(low)/BLDC(Heavy) → Off. Circ Pump runs max 3s. 3. Booster Right Key: Booster Right LED On. Distributer motor(Auto) → Valve water(Normal) → Heater(Max 2s)(Heavy) → Vane CW(Delicate) → Vane CCW(Express) → Off. |
How do I enter and use SVC Data Display Mode?
Entering Mode: Power on, press and hold Auto + Express keys for 5 seconds. Press again to exit.
Changing Mode: Press Auto key to cycle (d0 -> d1 -> … -> d14 -> Repeat). Auto-exits to normal mode after 5 minutes.
Data Displays (d00 to d14):
| Item | Description | Display |
|---|---|---|
| Entering Mode | To enter the mode | Press and hold Auto key + Express key for 5s (power on). Press again to exit. Checks sensor status. |
| Changing Mode | To change the mode | Press Auto key (d0→d1→…Repeat). Auto-returns to normal after 5 min. |
| d00 | Version display mode | Main micom version. Hold keys for others: Start (sub micom), Sanitize (model option), Booster Right (Inverter micom), Dry+ (touch IC). |
| d01 | Cycle Cnt | Cycle count (e.g., 12345 -> d01-0001-2345). Resets to 0 after 9999. |
| d02 | Detect low water lever | Water level detected when c-pump runs. Hi (Normal/undetermined), Low (low water). |
| d03 | Synchronous motor location | Sync motor location signal check based on operation. |
| d04 | Water temperature | Displays water temperature (e.g., 24.5°C → 254). |
| d05 | Flow meter | Displays Flow meter pulse. |
| d06 | Turbidity AD Data | Displays turbidity AD data. |
| d07 | Overflow Sensor Volt | Displays overflow sensor voltage. |
| d08 | Water Leakage Sensor Volt | Display water leakage sensor voltage. |
| d09 | Target RPM | Displays BLDC target RPM. |
| d10 | Current RPM | Displays BLDC current RPM. |
| d11 | Water supply pulse counter used in total. | Displays total flow meter pulse. |
| d12 | Reference Turbidity Data | Displays the reference turbidity data. |
| d13 | DC link | Displays the DC link. |
| d14 | Motor Power | Displays the operating motor power. |
How do I troubleshoot specific check codes?
4E(4C) / 4E-1(4C-1) Water Supply Check:
| Checking method | Corrective actions |
|---|---|
| 1. Faucet open? | Open faucet. |
| 2. Water supply cut off? | Wait for supply, power cycle. |
| 3. Foreign material in supply line/filter? | Remove material, clean filter. |
| 4. Water Valve connector connection? | Reconnect connector. |
| 5. Water Valve coil conductivity (Normal: ~990Ω ±10%)? | Faulty: Replace Water Valve. |
| 6. Supply stops after 20s? | Faulty: Replace Water Valve & Flow Meter. |
| 7. Supply stops after 60min? | Check pressure (>0.5bar). Faulty: Replace Water Valve & Flow Meter. |
| 8. Water Valve/Relay operation (Voltage check)? | Faulty: Replace Main PBA. Normal: Replace Water Valve. |
| 9. Power Relay check? | See “Power Relay check code”. |
5E(5C) Drain Check:
| Checking method | Corrective actions |
|---|---|
| 1. Foreign material in hose/pump? | Remove material. |
| 2. Drain Pump connector connection? | Reconnect connector. |
| 3. Drain Pump coil conductivity (Normal: ~88Ω ±7%)? | Faulty: Replace Drain Pump. |
| 4-1. Inverter PBA AC voltage (CN5)? | Faulty: Replace Main PBA. |
| 4-2. Inverter PBA LED(red) status? | Faulty: Replace Inverter PBA. |
| 4-3. Inverter PBA voltage (CN8 at n9 test mode)? | Faulty: Replace Inverter PBA. Normal: Check Inv PBA/Drain Pump connection. |
bE-2(bC-2) / bE-3(bC-3) Key Input Check:
| Checking method | Corrective actions |
|---|---|
| Condensation on PBA (Display/Touch modules)? | Faulty: Remove condensation. Normal: Replace Control Panel Assy. |
3E(3C) Circulation Pump Check:
| Checking method | Corrective actions |
|---|---|
| 1. Foreign material in hose/pump? | Remove material. Reconnect connector. |
| 2. Circulation Pump connector connection? | Reconnect connector. |
| 3. Circulation Pump coil conductivity (Normal: ~5.8Ω ±10%)? | Faulty: Replace Circulation Pump. |
| 4-1. Inverter PBA AC voltage (CN5)? | Faulty: Replace Main PBA. |
| 4-2. Inverter PBA LED(red) status? | Faulty: Replace Inverter PBA. |
| 4-3. Inverter PBA voltage (CN6 at n3(nC) test mode)? | Faulty: Replace Inverter PBA. Normal: Check Inv PBA/Circ Pump connection. |
HE-1(HC-1) Heater Check:
| Checking method | Corrective actions |
|---|---|
| 1. Heater connector connections? | Reconnect connectors. |
| 2. Heater resistance (Normal: ~12.14-14.16Ω)? | Faulty: Replace Heater. |
| 3. Heater Relay connection/voltage (Main PBA)? | Reconnect connectors. |
| 4. Heater Relay driving signals (Voltage check)? | Faulty: Replace Main PBA. |
HE(HC) Heater Overheat Check:
| Checking method | Corrective actions |
|---|---|
| 1. Thermistor operation? 2. Heater Relay? | See “tE(tC)” & “HE-1(HC-1)” codes. |
LE(LC) Leakage Check:
| Checking method | Corrective actions |
|---|---|
| Water leakage trace in shutter? | Faulty: Check location, replace part. |
PE(PC) Half Load Check:
| Checking method | Corrective actions |
|---|---|
| 1. Distributor Motor/Micro Switch connections? | Reconnect connectors. |
| 2. Distributor Motor coil conductivity (Normal: ~3.6-4.0kΩ)? | Faulty: Replace Distributor Motor. |
| 3. Micro Switch position sensing (n5 test mode)? | Faulty: Replace Micro Switch. Normal: Replace valve distributor/CAM. |
| 4. Adjust Cam Assy? | Faulty: Replace Cam Assy. |
| 5. Half load operation/voltage checks? | Faulty: Replace Main PBA. |
| 6. Power Relay check? | See “Power Relay check code”. |
7E(7C) Motor Vane Check:
| Checking method | Corrective actions |
|---|---|
| 1. Motor vane/Sensor vane connections? | Reconnect connectors. |
| 2. Motor vane coil conductivity (Normal: ~1.625-1.796kΩ)? | Faulty: Replace Motor vane. |
| 3. Sensor vane position sensing (n5 test mode)? | Faulty: Replace Sensor vane. Normal: Replace Motor/Sensor vane. |
| 4. Adjust Motion Assy? | Faulty: Replace Motion Assy. |
| 5. Motor vane operation/voltage checks? | Faulty: Replace Main PBA. |
| 6. Power Relay check? | See “Power Relay check code”. |
OE(OC) Overflow Check:
| Checking method | Corrective actions |
|---|---|
| 1. Overflow Sensor connector connection? | Reconnect connector. |
| 2. Water Valve operation (d07 mode)? | See “4E(4C)” code. |
| 3. Water supplied when valve not operating? | Remove foreign material from valve, or replace valve. |
| 4. Code occurs after confirming 1,2,3? | Replace Assy Case Brake. |
tE(tC) Thermistor Check:
| Checking method | Corrective actions |
|---|---|
| 1. Thermistor connector connection? | Reconnect connector. |
| 2. Thermistor voltage/resistance check (see PDF table)? | Faulty: Replace Thermistor. Normal: Replace Main PBA. |
AE(AC) Main-Sub PBA Communication Check:
| Checking method | Corrective actions |
|---|---|
| 1. Connections (MAIN CN402 & Display CN101)? | Reconnect connectors. |
| 2. Code continuous after method 1? | Replace: Sub-Wire. |
| 3. Code continuous after method 2? | Replace: Sub-PBA. |
| 4. Code continuous after method 3? | Replace: Main-PBA. |
1E(1C) Motor BLDC Check:
| Checking method | Corrective actions |
|---|---|
| 1. Pump BLDC connector connections? | Reconnect connectors. |
| 2. Code occurs after method 1? | Faulty: Replace HPS. |
| 3. Test mode n1/n2 motor sound check? | Faulty: Replace motor. |
| 4. Problem after methods 1,2,3? | Faulty: Replace Main-PBA. |
AE6(AC6) BLDC Motor Communication Check:
| Checking method | Corrective actions |
|---|---|
| 1. Connections (Main CN401 & Inverter CN1)? | Reconnect connectors. |
| 2. Code continuous after method 1? | Replace: Inverter PBA. |
| 3. Code continuous after method 2? | Replace: Main PBA. |
How do I troubleshoot a “No Power” issue?
| Checking method | Corrective actions |
|---|---|
| 1. Power plug connection? | Reconnect plug. |
| 2. Outlet voltage (Normal: 120V)? | Connect to 120V source. |
| 3. Power Key state? | Try touching Power key. |
| 4. Sub/Touch PBA connections? | Reconnect connectors. |
| 5. Main PBA CN101 connection? | Reconnect CN101. |
| 6. Sub/Main PBA connections? | Reconnect connectors. |
| 7. Condensation on PBA (Display/Touch modules)? | Faulty: Remove moisture. Normal: Replace Control Panel Assy. |
| 8. Fuse broken? | Replace fuse (15A). |
| 9. Main PBA DC voltage? | See “Main PBA DC voltage check code”. |
| 10. Main PBA power wires voltage (CN101 Pin1&3)? | Faulty: Check/replace wires. |
| 11. No Power after methods 1-10? | Replace Control Panel Assy. |
| 12. No Power after methods 1-11? | Replace Main PBA. |
How do I troubleshoot a Display Check issue (display not working)?
| Checking method | Corrective actions |
|---|---|
| 1. Display LED connector connections? | Reconnect connectors. |
| 2. Display LED itself? | Faulty: Replace Display LED and Sub PBA. |
How do I troubleshoot a Dry Check issue (poor drying performance)?
| Checking method | Corrective actions |
|---|---|
| 1. Fan Motor connections? | Reconnect connectors. |
| 2. Fan Motor coil resistance (Normal: ~50.4-61.6Ω)? | Faulty: Replace Fan Motor Assy. |
| 3. Fan Motor Relay operation (Voltage check)? | Faulty: Replace Main PBA Assy. |
| 4. Bad dry performance after 1-3? | Faulty: Replace Dry duct. |
How do I troubleshoot the issue “Detergent is not dispensed”?
| Checking method | Corrective actions |
|---|---|
| 1. Detergent inserted? | Check dispenser. |
| 2. Dispenser connector connections? | Reconnect connector. |
| 3. Dispenser resistance (Normal: ~0.7-3kΩ)? | Faulty: Replace Dispenser. |
| 4. Dispenser Relay operation (Voltage check)? | Faulty: Replace Main PBA Assy. |
How do I troubleshoot a “No washing” issue?
| Checking method | Corrective actions |
|---|---|
| 1. Filter check? | Faulty: Replace filter. |
| 2. Rotors/ducts/vane check? | Faulty: Replace Rotors/ducts. |
| 3. Half load operation? | See “PE check code”. |
| 4. Dispenser operation? | See “Dispenser is not dispensed”. |
How do I troubleshoot the issue “The cycle does not start”?
| Checking method | Corrective actions |
|---|---|
| 1. Door Sensing Switch connection/voltage? | Reconnect connector. |
| 2. Door Sensing Switch connection? | Reconnect connector. |
| 3. Door Sensing Switch operation (continuity)? | Faulty: Replace Door Sensing Switch. |
| 4. Power Relay operation? | Normal: Replace Main PBA. See “Power Relay check code”. |
How do I perform the Main PBA DC voltage check?
Check the DC voltage of the Main PBA:
• Measure voltage between pin 1 and pin 2 of connector CN402. Normal: 4.5V to 5.5V.
• Measure voltage between pin 2 and pin 3 of connector CN402. Normal: 10.5V to 13.0V.
If voltages are incorrect, investigate the Main PBA or related power components.
How do I perform the Power Relay check?
| Checking method | Corrective actions |
|---|---|
| 1. Power Relay connector connections & operating voltage (CN101 Pin 1)? | Reconnect Power Relay. |
| 2. Door switch operation (white wire)? | Faulty: Replace Door Switch. |
| 3. Power relay driving signals (CN402 Pin 7 & 2)? | Faulty: Replace main PBA Assy. |
| 4. Power Relay operation voltage (Relay Pin 3 & CN101 Pin 1)? | Faulty: Replace main PBA Assy. |
What should I check if the dishwasher power is on but it will not start?
| Possible Cause | Solution |
|---|---|
| The door is not closed completely. | Check that the door is latched and closed completely. |
| No cycle is selected. | Select a proper cycle. |
| The water supply does not work. | Check that the water supply valve is open. |
| Control panel is locked. | Unlock the child lock, (See user manual.) |
What should I check if the dishwasher does not dry dishes well?
| Possible Cause | Solution |
|---|---|
| There is no rinse aid in the dispenser. | Check the dispenser and add the rinse aid. Use the liquid type rinse aid for automatic dishwasher. |
| Too many dishes have been loaded. | Proper loading of items can affect drying. Load your dishes as recommended. |
| Are the plastics wet? | Plastic dishes often need towel drying. |
| Water is dropt to lower basket from the upside. | After the cycle finishes, empty the lower rack first and then the upper rack. This will prevent 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. | After finishing the cycle, empty the lower rack first and then the upper rack, this will avoid water dripping from the upper rack onto the dishes in the lower rack. |
| There is water left over when the last cycle is not completed. | Insert detergent without loading dishes, and run the Eco cycle to clean the dishwasher. Also, check the dispenser and add the rinse aid (Use the liquid type rinse aid). |
| Cold water is being supplied. | Check that the water supply line is connected to a hot water supply. (Additional time is required to heat cold water.) |
| The temperature of the water is low when the dishwasher is running. | Connect the water supply line to a hot water supply. Use rinse aid with the Sanitize option. |
What should I do if the dishwasher has a bad odor?
| Possible Cause | Solution |
|---|---|
| Drain Hose is obstructed. | Contact a qualified service technician to remove any obstruction from the drain hose. |
| The dishwasher is not used daily or Soiled dishes left in unit too long. | With the dishwasher empty and no detergent, place a glass with 1 or 2 cups(8~16 ounces) of white vinegar upright into the lower rack, and then run a Normal cycle. |
What should I check if there are food particles remaining on dishes (not cleaning properly)?
| Possible Cause | Solution |
|---|---|
| An inappropriate cycle has been selected. | Did you choose the cycle that describes the most difficult soil? Use a heavier cycle for heavier soils. Select cycle per manual. |
| The dishes are improperly loaded. | Rearrange dishes so they don’t interfere with nozzle rotation/dispenser cover. Load appropriately per manual. |
| Too many dishes have been loaded. | Load appropriately per manual. |
| Low water pressure. | Pressure should be 0.04 ~ 1.0 Mpa (20-120 psi). Use commercial cleaner, high-quality fresh detergent, rinse aid. |
| The water is too hard. | Use automatic detergent (powder/gel recommended). Use commercial cleaner, high-quality fresh detergent, rinse aid. |
| Dishwasher detergent was not used. | Use automatic detergent (powder/gel recommended). |
| The amount of detergent was inappropriate. | Use the appropriate amount of automatic detergent. |
| Detergent remains in the dispenser. | Check for dishware blocking dispenser (cookie sheets, etc.). Rearrange dishes. |
| There is no rinse aid. | Check dispenser, add liquid rinse aid. |
| A nozzle is clogged. | Check if clogged by labels/food. Clean nozzle per manual. |
What should I do about spots and filming on glasses and flatware?
| Possible Cause | Solution |
|---|---|
| Did you use the correct amount of effective detergent? | Use recommended detergents (fresh, stored cool/dry). Heavy soil/hard water may need extra. NOTE: Occasional vinegar rinse: Wash/rinse (no sanitize), remove metal, 2 cups vinegar in glass on bottom rack, run full cycle (no detergent). |
| Extremely hard water/Old or damp powder detergent/Too little detergent | Harder water needs more detergent. Add rinse aid for spotting/drying. White residue? Try dissolving with vinegar/Lemi juice mix: 2 cups vinegar (or 1 cup Lime + 1 cup vinegar) in container on bottom rack (no detergent), run Eco cycle. Ensure detergent is fresh. |
| The water supplied is soft and too much detergent was used. | Underload the dishwasher and use rinse aid to minimize this. |
What causes leaves glasses with a dim polish (cloudiness on glassware)?
| Possible Cause | Solution |
|---|---|
| Silica film or etching (milky/rainbow deposit or cloudy film) | Caused by soft water, alkaline solutions, poor rinsing, overloading. Etching is permanent. Prevent: use less detergent (>=1 tbsp/15g) with soft water, wash glassware in shortest cycle. Slow etching: minimum detergent, liquid rinse aid, underload for thorough rinsing. Silica film/etching cannot be removed. |
| Water temperature entering dishwasher exceeds 150°F | This could be etching. Lower water heater temperature. |
| Aluminum dishes were included in the wash load. | Remove the marks on the dishes using a low sensitivity cleaner. (Also see Black/Gray marks section). |
What causes black or gray marks on dishes?
| Possible Cause | Solution |
|---|---|
| Aluminum dishes were included in the wash load. | Disposable aluminum can break down and mark. Hand wash these items. Remove aluminum markings with a mild abrasive cleaner. |
Why is the dishwasher taking too long for an operation or cycle?
| Possible Cause | Solution |
|---|---|
| Cold water is being supplied. | Check that the water supply line is connected to a hot water supply. (Additional time is required to heat cold water.) |
Why is there a yellow or brown film inside the dishwasher?
| Possible Cause | Solution |
|---|---|
| This is caused by coffee and tea soils. | Remove the soils using a spot cleaner. |
Why is my dishwasher too noisy?
| Possible Cause | Solution |
|---|---|
| Sound is generated when the dispenser cover is open and the drain pump is operating in an early stage. | This is normal operation. |
| The dishwasher is not level. | Ensure the dishwasher is level. |
| Foreign material(Screw, Plastic piece) is in pump chamber. | Contact a qualified service technician to remove foreign material from the pump chamber. |
| There is a ‘chopping’ sound because a nozzle is bumping against the dishes. | Rearrange the dishes. |
Why does the dishwasher not have a smoothly rotating nozzle?
| Possible Cause | Solution |
|---|---|
| The nozzle hole is clogged with food particles. | Clean the nozzle hole. |
| The nozzle is blocked by a dish or pot and cannot rotate. | After placing the dishes into the racks, rotate the nozzles by hand to check whether any of the dishes will interfere with them. |
Why won’t water pump out of the dishwasher?
| Possible Cause | Solution |
|---|---|
| Drain is clogged. | Contact a qualified service technician to remove any obstruction from the drain hose and check the drain pump operation. |
Why is the upper rack bent after loading dishes?
| Possible Cause | Solution |
|---|---|
| The dishes are not loaded properly. | Load your dishes as recommended. |
What are the functions of key dishwasher components?
1. Circulation Motor: Sucks water from the floor and injects it under high pressure through nozzles.
2. Drain Pump: Drains polluted water generated during operation.
3. Heater: Located in water passages, heats water to increase wash efficiency.
4. Vent Fan: Drains high-temperature moisture during the drying cycle.
5. Flow Meter: Measures supplied water by counting pulses from a hall IC near the inlet valve.
6. Distributor: Located at sump output, controls water flow to the bottom part.
7. Dispenser: Stores and automatically supplies detergent and rinse aids.
8. Tub Assy: Internal stainless steel case; the basic framework.
9. Sump Assy: Where water collects after circulation; connected to motors and pump.
10. Tub Front Assy: Internal stainless steel part of the front door.
11. Base Assy: Plastic part forming the bottom framework.
12. Basket Assy: Upper and lower racks for loading dishes.
13. Top/Middle/Lower Nozzles: Rotate and inject water at high pressure to wash dishes.
14. Case Brake: Passage connecting internal and external air pressure to adjust for temperature expansion.
15. Door Lock Switch: Detects if the door is open or closed; stops cycle if opened mid-run.
16. Child Lock/Unlock: Prevents children from operating the dishwasher while running.
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