How to Troubleshoot A Built-In Dishwasher That Won't Drain?

21 minutes read

If your built-in dishwasher is not draining properly, there are a few troubleshooting steps you can take to try and resolve the issue. First, check to make sure that the drain hose is not clogged or kinked. If it is, you can remove the clog or straighten out the hose to improve drainage.


Next, inspect the drain pump to see if it is blocked or malfunctioning. You may need to clean out any debris that is preventing the pump from working properly. Additionally, check the dishwasher's filter and remove any food particles or debris that may be causing a blockage.


If these steps do not resolve the issue, you may need to check the dishwasher's air gap, drain valve, or drain solenoid for any obstructions or malfunctions. In some cases, the problem may be more complex and require professional repair or replacement of parts.


It is important to always refer to the manufacturer's instructions and safety guidelines when troubleshooting and repairing appliances. If you are unsure or uncomfortable with these tasks, it may be best to contact a professional technician for assistance.

Best Built-In Dishwashers in 2024

1
SAMSUNG Smart 44dBA Dishwasher w/ StormWash+, AutoRelease Door, Quiet Operation, 3 Dish Racks, Pre Blast Cycle, Energy Star Certified, DW80B6060UG/AA, Fingerprint Resistant Stainless Steel, Black

Rating is 5 out of 5

SAMSUNG Smart 44dBA Dishwasher w/ StormWash+, AutoRelease Door, Quiet Operation, 3 Dish Racks, Pre Blast Cycle, Energy Star Certified, DW80B6060UG/AA, Fingerprint Resistant Stainless Steel, Black

  • AUTORELEASE DOOR DRY: At the end of a wash cycle, the door automatically opens to circulate air, which significantly improves drying performance
  • WHISPER QUIET 44dBA: So quiet you don’t even know it’s on with Whisper Quiet 44dBA operation
  • FIT MORE DISHES: A convenient 3rd rack provides extra space to load small mugs, utensils and silverware; Frees up to 30% more space for other items to help you load all you need
  • PRE BLAST CYCLE: Removes the time-consuming task of washing dishes prior to loading them in the dishwasher; Simply push the Pre Blast button at the beginning of any cycle and pre-rinsing begins
  • TIME DISPLAY: The display shows how long a cycle normally takes to complete; As the cycle progresses, the estimated hours and minutes left will continuously update
2
SHARP Slide-In Dishwasher, Stainless Steel Finish, 24" Wide, Soil Sensors, Premium White LED Interior Lighting, Smooth Glide Rails, Heated Dry Option, Responsive Wash Cycles, Power Wash Zone

Rating is 4.9 out of 5

SHARP Slide-In Dishwasher, Stainless Steel Finish, 24" Wide, Soil Sensors, Premium White LED Interior Lighting, Smooth Glide Rails, Heated Dry Option, Responsive Wash Cycles, Power Wash Zone

  • Soil Sensors Automatically Optimize Your Washing Cycles, Making Cleaning a Breeze
  • More Dependable Than Condensation Drying, Our Heated Dry Option is Fast and Efficient
  • Premium White LED Interior Lighting, For Better Visibility into Your Dishwasher
  • Premium Smooth Glide Rails Provide Quality with the Slightest Touch
  • Allows The Freedom to Wash Smaller Loads with Our Half-Load Feature
3
Midea MDF18A1ABB Built-in Dishwasher with 8 Place Settings, 6 Washing Programs, Stainless Steel Tub, Heated Dry, Energy Star, Black

Rating is 4.8 out of 5

Midea MDF18A1ABB Built-in Dishwasher with 8 Place Settings, 6 Washing Programs, Stainless Steel Tub, Heated Dry, Energy Star, Black

  • 【Slimline Design with Large Capacity】The Midea built-in dishwasher boasts a slim body that takes up minimal space and is easy to fit. It features a digital control panel with an LED display and has been thoughtfully designed to accommodate larger plates, pots, and pans up to 11 inches in height.
  • 【8 Place Settings Dishwasher】With dimensions of 24.41"D x 17.72"W x 33.27"H with adjustable legs, this under sink dishwasher provides a spacious and flexible interior for maximum dishware loading.
  • 【6 programs+3 functions】The 18-inch dishwasher offers six programs, including Heavy, Normal, ECO, Delicate, Quick, and Rinse washing programs. It also features Heated Dry, Hi-Temp, and Sanitize functions that meet all your daily needs. Note: ONLY use detergent specially for dishwasher because regular liquid dish soap will cause dishwasher problems.
  • 【Heated Dry】Smart dishwasher ensures the best drying performance. The extra drying function offers a thorough drying performance (except for the Rapid and Self-clean cycle) with no additional towel drying required.
  • 【HI TEMP】The HYGIENE wash cycle maintains the water temperature at 136°F (58°C) max , which can tackle even the heaviest soiled dishes. It is also suitable for cleaning baby bottles and children's dinner sets.
4
Midea MDF18A1AST Built-in Dishwasher with 8 Place Settings, 6 Washing Programs, Stainless Steel Tub, Heated Dry, Energy Star

Rating is 4.7 out of 5

Midea MDF18A1AST Built-in Dishwasher with 8 Place Settings, 6 Washing Programs, Stainless Steel Tub, Heated Dry, Energy Star

  • 【Slimline Design with Large Capacity】The Midea built-in dishwasher boasts a slim body that takes up minimal space and is easy to fit. It features a digital control panel with an LED display and has been thoughtfully designed to accommodate larger plates, pots, and pans up to 11 inches in height.
  • 【8 Place Settings Dishwasher】With dimensions of 24.41"D x 17.72"W x 33.27"H with adjustable legs, this under sink dishwasher provides a spacious and flexible interior for maximum dishware loading.
  • 【6 programs+3 functions】The 18-inch dishwasher offers six programs, including Heavy, Normal, ECO, Delicate, Quick, and Rinse washing programs. It also features Heated Dry, Hi-Temp, and Sanitize functions that meet all your daily needs. Note: ONLY use detergent specially for dishwasher because regular liquid dish soap will cause dishwasher problems.
  • 【Heated Dry】Smart dishwasher ensures the best drying performance. The extra drying function offers a thorough drying performance (except for the Rapid and Self-clean cycle) with no additional towel drying required.
  • 【HI TEMP】The HYGIENE wash cycle maintains the water temperature at 136°F (58°C) max , which can tackle even the heaviest soiled dishes. It is also suitable for cleaning baby bottles and children's dinner sets.
5
LG 24-Inch Front Control Dishwasher with SenseClean in Stainless Steel - LDFC2423V

Rating is 4.6 out of 5

LG 24-Inch Front Control Dishwasher with SenseClean in Stainless Steel - LDFC2423V

  • NeveRust Stainless Steel Tub
  • SenseClean Wash System
  • Dynamic Dry
  • LoDecibel Quiet Operation
  • Control Lock
6
Kenmore 24" Built-In Stainless Steel Tub Dishwasher with SmartWash, UltraWash, SmartDry Plus, MoreSpace Adjustable Rack and Leak Detect, Energy Star Certified, Black

Rating is 4.5 out of 5

Kenmore 24" Built-In Stainless Steel Tub Dishwasher with SmartWash, UltraWash, SmartDry Plus, MoreSpace Adjustable Rack and Leak Detect, Energy Star Certified, Black

  • 24" BUILT-IN DISHWASHER: Ensures the right wash for your load every time with SmartWash Cycle, which adjusts the temperature, amount of water, and duration for the best cleaning results for each unique load
  • INNOVATIVE SYSTEMS: UltraWash system uses 2 spray arms while constantly filtering the wash water through the wash cycle, while SmartDry uses hot water to promote the condensation of moisture in the tub for ready-to-use dishes
  • CUSTOMIZABLE CAPACITY: Add flexibility to your dishwashing routine with the MoreSpace Adjustable Rack, which allows you to lift, lower, or remove the rack to accommodate large items
  • FUNCTIONAL AND ATTRACTIVE: Stainless steel tub resists food stains and retains heat for an optimal drying performance each cycle while also making for a stylish addition to any home kitchen
  • SERENE KITCHEN ENVIRONMENT: Operates at 51 dBA for a quiet wash that makes it easy to enjoy after-dinner chats
7
West Bend WB120BDWVSS Dishwasher 24-Inch Built in with 3 Wash Options and Automatic Cycles, Stainless Steel Construction with Electronic Control LED Display, Low Noise Rating, Metallic

Rating is 4.4 out of 5

West Bend WB120BDWVSS Dishwasher 24-Inch Built in with 3 Wash Options and Automatic Cycles, Stainless Steel Construction with Electronic Control LED Display, Low Noise Rating, Metallic

  • MAXIMUM CAPACITY: Dishwasher holds up to 12 standard place settings and features a silverware basket and cup tray
  • AUTOMATIC CYCLES: Three automatic cycles (Regular, Automatic, Super), delayed start, and three additional wash options (Hi Temp Wash, Sanitize, Extra Dry) ensure the right clean for your dishes
  • LOADED WITH FEATURES: Electronic control panel with LED display & cycle status indicators, quiet 57dB operation, rinse aid dispenser, eco - half load mode, nylon coated upper and lower racks
  • BUILT-IN DESIGN: This stainless steel built-in dishwasher is ADA-compliant
8
Kenmore 24" Built-In Stainless Steel Tub Dishwasher with EasyFlex 3rd Rack, SmartWash, UltraWash Plus, TurboDry, MoreSpace Adjustable Rack, Energy Star Certified, Black

Rating is 4.3 out of 5

Kenmore 24" Built-In Stainless Steel Tub Dishwasher with EasyFlex 3rd Rack, SmartWash, UltraWash Plus, TurboDry, MoreSpace Adjustable Rack, Energy Star Certified, Black

  • 24" BUILT-IN DISHWASHER: Ensures the right wash for your load every time with SmartWash Cycle, which adjusts the temperature, amount of water, and duration for the best cleaning results for each unique load
  • INNOVATIVE SYSTEMS: UltraWash Plus system uses 3 spray arms while constantly filtering the wash water through the wash cycle, while TurboDry uses hot water and a fan to promote the condensation of moisture in the tub for ready-to-use dishes
  • ERGONOMIC FEATURES: AccelaWash Option delivers clean dishes in less time, and MoreSpace Adjustable Rack allows you to lift, lower, or remove the upper rack to accommodate large items
  • FUNCTIONAL AND ATTRACTIVE: Stainless steel tub resists food stains and retains heat for an optimal drying performance each cycle while also making for a stylish addition to any home kitchen
  • SERENE KITCHEN ENVIRONMENT: Operates at 49 dBA for ultra-quiet cycles that make it easy to enjoy after-dinner chats and the Quiet Wash Option provides additional noise reduction
9
RCA RZ0842 Front Control-Built in FULLSIZE Dishwasher, 57 DBA, Stainless Steel, 24” WIDE, Stainless

Rating is 4.2 out of 5

RCA RZ0842 Front Control-Built in FULLSIZE Dishwasher, 57 DBA, Stainless Steel, 24” WIDE, Stainless

  • Ready-select electronic controls on a slim front panel allow you to easily select options with the touch of a button
  • Ultra Quiet sound package (57 dBA) keeps the noise from your dishwasher to a minimum
  • Tall-Tub design with large capacity fits up to 8 place settings so you can wash more at once
  • 6 easy-to-use wash cycle options meet all of your cleaning needs, including Energy Saver, pots and pans, rinse only, and light wash
  • Additional options include sanitize, high temperature wash and high heat/no heat dry to ensure your dishes are thoroughly cleaned at the end of your wash cycle
10
EdgeStar BIDW1802BL 18 Inch Wide 8 Place Setting Built-In Dishwasher

Rating is 4.1 out of 5

EdgeStar BIDW1802BL 18 Inch Wide 8 Place Setting Built-In Dishwasher

  • Accommodates up to eight (8) place settings and features a silverware basket and cup tray
  • Six (6) Wash Cycles: Heavy, Normal, ECO, Glass, Rapid, and Rinse; Three (3) Options: Sanitize, Hi Temp, Heated Dry
  • At only 17.75 inches wide, using this unit to replace an older appliance such as a trash compactor is a great option.
  • Leakage sensor automatically shuts off water flow when a leak is detected to protect your home from water damage
  • Quiet 52dB operation keeps the disturbance to a minimum; Dimensions 32.5" H x 17.6" W x 22.4" D; Weight: 52.9 lbs


How to check the drain hose for blockages?

  1. Begin by turning off the power to your washing machine or dishwasher to avoid any accidents while checking the drain hose.
  2. Locate the drain hose at the back of the machine. It is usually a thick, flexible hose that extends from the machine to the wall or floor drain.
  3. Remove the clamp or hose from the drainage pipe and inspect the hose for any visible blockages. You can do this by gently bending and feeling along the length of the hose to check for any obstructions.
  4. If you are unable to see any blockages, you can also use a flashlight to look into the hose to identify any debris or clogs.
  5. Next, check the drain pipe where the hose connects to ensure it is not blocked with dirt or debris. You can use a wire hanger or pipe cleaner to remove any visible blockages.
  6. If you still suspect a blockage but cannot see it, you may need to disconnect the hose completely from the machine and the drainage pipe to manually remove the blockage. Be sure to have a bucket or towel handy to catch any water that may spill out.
  7. Once you have cleared any blockages and reconnected the hose, run a test cycle to ensure proper drainage. If the water is still not draining properly, there may be a more serious issue with the machine or plumbing that requires professional assistance.


What is the impact of a kinked drain line on dishwasher drainage?

A kinked drain line can significantly impact the drainage of a dishwasher. When the drain line is kinked, it can restrict the flow of water from the dishwasher, causing water to back up and potentially leak onto the kitchen floor. This can lead to water damage, mold growth, and unpleasant odors in the kitchen.


In addition, a kinked drain line can also prevent the dishwasher from draining properly, leaving dirty water and debris in the bottom of the dishwasher after a cycle. This can result in dishes not being cleaned effectively and may lead to a build-up of bacteria and other contaminants.


Overall, a kinked drain line can have a negative impact on the performance and efficiency of a dishwasher, and it is important to address this issue promptly to prevent potential damage and health hazards.


How to check for clogs in a built-in dishwasher drain?

  1. Start by removing the bottom rack of the dishwasher to access the drain.
  2. Look for any visible debris or clogs in the drain area. This could include food particles, pieces of broken glass, or other objects that may be blocking the drain.
  3. Use a flashlight to inspect the drain hose for any obstructions. The drain hose is usually located under the sink and connects to the dishwasher.
  4. Check the drain pump for any clogs or blockages. The drain pump is typically located at the bottom of the dishwasher and can become clogged with debris over time.
  5. If you suspect a clog but are unable to locate it, you can try using a plunger or a plumbing snake to dislodge the obstruction. Be sure to disconnect the drain hose before attempting this.
  6. Run a cycle with a dishwasher cleaner or vinegar to help break down any remaining clogs or build-up in the drain.
  7. Check the dishwasher's filter and clean it if necessary. A dirty filter can cause drainage issues and should be cleaned regularly.
  8. Once you have checked for and removed any clogs, run a cycle with hot water and a dishwasher cleaner to flush out any remaining debris.


If you are unable to clear the clog yourself or if you continue to experience drainage issues after trying these steps, it may be necessary to call a professional plumber or appliance repair technician for further assistance.


What is the significance of a properly draining dishwasher?

A properly draining dishwasher is significant for several reasons:

  1. Cleanliness: If a dishwasher does not drain properly, it can leave standing water in the bottom of the unit, leading to unpleasant odors and potential mold growth. This can also result in dishes not being properly cleaned, as the dirty water may re-circulate during the wash cycle.
  2. Efficiency: A dishwasher that does not drain properly may not operate as efficiently, as it may take longer to complete a cycle or use more water and energy to complete the same task.
  3. Longevity: If water is not draining properly from the dishwasher, it can lead to damage to the unit over time. Standing water can cause corrosion or leaks, which can ultimately shorten the lifespan of the dishwasher.
  4. Preventing clogs: Proper drainage helps to prevent clogs in the dishwasher's drain line, which can lead to backups and potential water damage in the kitchen.


Overall, maintaining a properly draining dishwasher is essential for its functionality, efficiency, and longevity. Regular maintenance and addressing any drainage issues promptly can help ensure that the dishwasher continues to work effectively for years to come.


How to test the dishwasher pump for functionality?

To test the dishwasher pump for functionality, you can follow these steps:

  1. Make sure the dishwasher is turned off and disconnected from power before proceeding.
  2. Remove the bottom front panel of the dishwasher to access the pump.
  3. Locate the dishwasher pump, which is typically located near the bottom of the dishwasher.
  4. Remove any debris or obstructions from the pump that may be blocking its operation.
  5. Check for any visible signs of damage or wear on the pump.
  6. Use a multimeter to test the pump for continuity. Set the multimeter to the lowest setting for resistance and touch the probes to the terminals on the pump. If there is no continuity, the pump may be faulty and in need of replacement.
  7. If the pump is making a humming noise but not circulating water, check the pump impeller for blockages or damage.
  8. Manually turn the pump impeller to ensure it can move freely without any obstruction.
  9. If the pump still does not function properly after these steps, it may be necessary to replace the pump with a new one.
  10. Reassemble the dishwasher and test it to ensure the pump is now functioning correctly.


What is the reset process for a built-in dishwasher?

The reset process for a built-in dishwasher can vary depending on the brand and model. However, here is a general procedure that you can follow:

  1. Make sure that the dishwasher is turned off and that there are no dishes inside.
  2. Unplug the dishwasher from the power outlet or turn off the circuit breaker that supplies power to the dishwasher.
  3. Wait for a few minutes (around 10-15 minutes) to allow the dishwasher to reset.
  4. Plug the dishwasher back in or turn on the circuit breaker.
  5. Turn on the dishwasher and select a cycle to test if it is working properly.


If the dishwasher still does not work after following these steps, you may need to consult the owner's manual or contact the manufacturer for specific reset instructions.

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