Samsung Washing Machine: not functioning, mildew smell

Professional Repair Guide

What is this symptom?

Is your Samsung washing machine not functioning and emitting a mildew smell? This common issue is often caused by mold buildup, detergent residue, or drainage problems. Addressing these concerns promptly can restore proper operation and eliminate unpleasant odors.

Urgency: Medium

Important Tips for Samsung Models

Samsung official guidance recommends running Self Clean cycle and cleaning pump filter to address mildew smells

Possible Causes

Mold and mildew buildup inside drum and gasket

How to Identify: Musty smell, visible dark spots of mold on gasket/drum, lingering odor on clothes

Part: Drum interior, rubber door gasket, seals

Detergent residue accumulation

How to Identify: Sticky soapy residue in detergent tray, persistent smell after wash cycles, excess suds observed

Part: Detergent drawer, drum interior

Improper drainage/standing water in pump filter or hoses

How to Identify: Water remaining in drum post-cycle, smell worsening over time, debris collected in lower front filter

Part: Drain pump filter, drain hose

Faulty door lock/safety switch preventing operation

How to Identify: Machine won’t start despite power, door doesn’t fully click/lock, relevant error code appears

Part: Door latch/lock assembly

DIY Solutions

Run Samsung Self Clean or Cleaning Cycle

Moderate 1–4 hours depending on model

Tools Needed: HE washer cleaner or white vinegar, paper towels

Ensure drum is empty and run Self Clean or highest temperature cycle
Wipe drum and gasket thoroughly after cycle
Run a Rinse & Spin cycle to remove residue
Leave door and detergent tray open to dry

⚠️ Safety First: Ensure no laundry is in the washer during cleaning

Clean Gasket and Detergent Drawer

Easy 20–40 minutes

Tools Needed: Soft cloth, Mild detergent or vinegar solution, Old toothbrush

Pull back rubber gasket folds and wipe with vinegar/water mix
Remove and soak detergent drawer, scrub residue
Wipe down interior surfaces thoroughly
Leave parts open to dry completely

⚠️ Safety First: Wear gloves if skin sensitive to vinegar or detergent

Clear Drain Pump Filter

Moderate 30–45 minutes

Tools Needed: Towel, Bucket, Screwdriver

Locate front pump filter panel
Place towel and bucket to catch water
Unscrew filter cap and remove debris
Rinse filter and reinstall

⚠️ Safety First: Ensure power to washer is off before opening panels

Check and Reset Power/Settings

Easy 10–15 minutes

Tools Needed: None

Ensure the machine is plugged in and outlet has power
Test a different outlet or reset circuit breaker
Check if child lock or delay start is active and deactivate
Try holding start button firmly for 2–3 seconds

⚠️ Safety First: Do not force electrical components

Next step

Choose the next step for not functioning, mildew smell

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Door Gasket

Creates a watertight seal around the door to prevent leaks during operation.

Typical part-only price: $45 - $110
DIY difficulty: Medium
Estimated time: 30-60 mins

Optional: enter your model number

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.

Find a part that fits my model

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.

Possible related component

Drain Hose

Carries waste water from the drain pump to your home's standpipe or sink drain.

$15 - $30 · Easy · 15-30 mins

Check fit & price

Possible related component

Drain Pump

Pumps waste water out of the appliance during the drain cycle.

$35 - $80 · Easy · 15-30 mins

Check fit & price

Possible related component

Door Latch Assembly

Mechanically secures the appliance door and may operate a door-closed safety switch.

$15 - $80 · Medium · 20-60 mins

Check fit & price

Model number required

Model-compatible Washing Machine 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.

Find a part that fits my model

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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.

Maintenance supply

Washing Machine Cleaner Tablets

Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.

View maintenance supply

Maintenance supply

Braided Washer Inlet Hoses

A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.

View maintenance supply

Maintenance supply

Washer Drain Hose Holder

Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace Faulty Door Lock or Switch

Estimated Cost: $80–$200

Control Board or Fuse Replacement

Estimated Cost: $150–$400

Deep Internal Cleaning Service

Estimated Cost: $100–$300

When to Call a Professional

Washer won’t start after basic troubleshooting

Persistent odor and visible mold despite cleaning

Water remains inside after filter cleaning

Error codes related to hardware faults appear

Preventive Maintenance

Run Self Clean cycle: Mildew and odor buildup
Frequency: monthly or as recommended
Leave door and detergent tray open after use: Moisture buildup and mold growth
Frequency: After every wash
Clean drain pump filter: Drain clogs and odors
Frequency: Monthly or bi-monthly

Frequently Asked Questions

Why is my Samsung Washing Machine not functioning, mildew smell?

The top causes include mold and mildew buildup, detergent residue, improper drainage, or a faulty door lock.

How do I fix Samsung Washing Machine not functioning, mildew smell myself?

You can run the Self Clean cycle, clean the gasket and detergent drawer, or check the drain pump filter.

How much does it cost to fix not functioning, mildew smell?

Professional repairs can range from $80 to $400, depending on the issue.

When should I call a technician for not functioning, mildew smell?

Call a technician if DIY fixes do not work or if you suspect a faulty door lock or control board.

References & Sources

Samsung washing machine has a mildew smell or visible mold Official
Samsung washer smell/bad odor troubleshooting Official

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 drain filter or hose leading to water stagnation
Mold buildup in the door seal or detergent dispenser
Faulty water pump preventing proper drainage

User Suggested Solutions

Check and clean the drain filter and hose. Disconnect the washer from power, locate the drain filter (usually at the front bottom of the machine), and remove any debris. Also, check the drain hose for blockages.
Clean the door seal and detergent dispenser. Use a mixture of vinegar and water to wipe down the rubber seal and the dispenser, ensuring all mold and residue are removed.
Inspect and replace the water pump if necessary. If the machine is still not draining properly after cleaning, the water pump may need to be replaced. This involves removing the back panel and disconnecting the pump.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Samsung Washing Machine: not functioning, mildew smell

What is this symptom?

Important Tips for Samsung Models

Possible Causes

Mold and mildew buildup inside drum and gasket

Detergent residue accumulation

Improper drainage/standing water in pump filter or hoses

Faulty door lock/safety switch preventing operation

DIY Solutions

Run Samsung Self Clean or Cleaning Cycle

Clean Gasket and Detergent Drawer

Clear Drain Pump Filter

Check and Reset Power/Settings

Choose the next step for not functioning, mildew smell

Door Gasket

Other parts options

Drain Hose

Drain Pump

Door Latch Assembly

Model-compatible Washing Machine parts

Maintenance supplies

Washing Machine Cleaner Tablets

Braided Washer Inlet Hoses

Washer Drain Hose Holder

Professional Repairs

Replace Faulty Door Lock or Switch

Control Board or Fuse Replacement

Deep Internal Cleaning Service

When to Call a Professional

Preventive Maintenance

Frequently Asked Questions

References & Sources

Community Analytical Insights

Common Issues Reported by Users

User Suggested Solutions

Check and clean the drain filter and hose. Disconnect the washer from power, locate the drain filter (usually at the front bottom of the machine), and remove any debris. Also, check the drain hose for blockages.

Clean the door seal and detergent dispenser. Use a mixture of vinegar and water to wipe down the rubber seal and the dispenser, ensuring all mold and residue are removed.

Inspect and replace the water pump if necessary. If the machine is still not draining properly after cleaning, the water pump may need to be replaced. This involves removing the back panel and disconnecting the pump.

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