Samsung Dishwasher: not cleaning
What is this symptom?
Is your Samsung dishwasher leaving dishes dirty or covered in food residue after a cycle? This frustrating issue may stem from clogged spray arms, a dirty filter, or improper loading. Ensure optimal cleaning by addressing these common problems.
Important Tips for Samsung Models
- Some Samsung models use a waterwall or distributor system; failure of specific motors (e.g., waterwall vane motor) can affect cleaning in specific areas.
Possible Causes
Clogged or obstructed spray arms
How to Identify: Water not spraying strongly; dishes near spray arms are dirtier; spray arms do not spin freely or holes are filled with debris.
Part: Spray arms (upper and lower)
Clogged or dirty filter
How to Identify: Food particles visible in filter; slow draining; dirty water remaining at bottom; repeated dirty dishes.
Part: Dishwasher filter assembly
Improper loading and cycle settings
How to Identify: Overloaded racks; items blocking spray arms; improper cycle selected for soil level.
Part: User loading and settings
Insufficient water supply/temperature
How to Identify: Low water pressure; water feels not hot enough; may hear slow fill; dishes not cleaned especially upper rack.
Part: Water inlet valve, home hot water supply
Detergent or rinse aid issues
How to Identify: Poor detergent dissolve; old or low-quality detergent; no rinse aid leading to spots and poor cleaning.
Part: Detergent dispenser
Faulty circulation pump or motor
How to Identify: No strong water spray; machine fills but does not circulate water; humming noise from pump.
Part: Circulation pump and motor
Failed or blocked water inlet valve
How to Identify: Dishwasher not filling adequately despite water supply; slow fill times.
Part: Water inlet valve
DIY Solutions
Clean spray arms
- Remove upper and lower spray arms.
- Inspect all holes for debris and clear clogs with a toothpick or small wire.
- Rinse spray arms under warm water to flush out remaining debris.
- Reinstall spray arms ensuring they spin freely.
Clean filter assembly
- Locate the filter at the bottom of dishwasher.
- Remove and rinse filter under running water.
- Use a soft brush to dislodge trapped food particles.
- Reinstall filter securely.
Adjust loading and cycle selection
- Unload and reload dishes avoiding overcrowding.
- Ensure large items don’t block spray arms.
- Select appropriate wash cycle based on soil level and detergent recommendations.
Check water temperature and supply
- Run hot water faucet near dishwasher before starting cycle.
- Check that water heater is set to ~120°F.
- Ensure water inlet valve under sink is fully open.
Use fresh quality detergent and rinse aid
- Replace old detergent with high-quality dishwasher detergent.
- Add rinse aid to dishwasher dispenser.
- Follow dosage instructions for water hardness and soil level.
Next step
Choose the next step for not cleaning
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Dishwasher Filter
Screens food debris from recirculating wash water and protects the pump system.
- Typical part-only price
- $15 - $65
- DIY difficulty
- Easy
- Estimated time
- 5-15 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Water Inlet Valve
Controls the flow of hot and cold water into the appliance.
Detergent Dispenser
Releases detergent, bleach, or rinse aid at the correct moment in the cycle.
Dishwasher Circulation Pump
Circulates pressurized water through the dishwasher spray arms during the wash cycle.
Model-compatible Dishwasher parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dishwasher Cleaner and Descaler
Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Professional Repairs
Replace circulation pump or motor
Replace water inlet valve
When to Call a Professional
Preventive Maintenance
-
Clean filter: Clog buildup leading to poor cleaning
Frequency: monthly -
Inspect and clean spray arms: Spray arm clogs that reduce water distribution
Frequency: every 2–3 months -
Run dishwasher cleaning cycle (e.g., vinegar): Mineral buildup and odors
Frequency: monthly
Frequently Asked Questions
Why is my Samsung Dishwasher not cleaning?
How do I fix Samsung Dishwasher not cleaning myself?
How much does it cost to fix not cleaning?
When should I call a technician for not cleaning?
References & Sources
Community Analytical Insights
Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions
Common Issues Reported by Users
- Clogged or obstructed water supply (2 mentions)
- Ineffective detergent usage (1 mentions)
User Suggested Solutions
-
Raising the drain pipe improved cleaning performance.
-
Running a dishwasher cleaner through it may help clear out water ducts and sprayers.
Limited-source guidance; percentages and success-rate claims are not shown
View
Sources
Data compiled from real discussions on r/appliancerepair and r/Appliances:
Community Discussions
not cleaning well
Raising the drain pipe improved cleaning performance.
not cleaning dishes
Running a dishwasher cleaner through it may help clear out water ducts and sprayers.
Source: Reddit r/appliancerepair
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