Frigidaire's guide treats odor in the FFFW5000 as a moisture and residue problem with a written routine. Run the System Clean cycle once a month: press and hold the Spin Speed and Options buttons together for 10 seconds until the display changes to CLn, remove everything from the drum, put one cup of liquid chlorine bleach or one pouch of washing machine cleaner (not both) in the detergent chamber and press START, then follow with a Fresh Rinse and max spin with no detergent or bleach. Dry the gasket fold after every wash, leave the door and dispenser drawer open for a few hours, and use only HE detergent at the recommended dose.
Differential
Likely causes of “Frigidaire FFFW5000 front-load washer smells musty, sour or like mildew”, and how to tell them apart
- 1
Moisture and a wet gasket
What separates it A musty smell and mildew stains in the gasket
How to confirm Dry the gasket fold with a towel after each wash
- 2
Non-HE detergent or overdosing
What separates it There is residue and odor because non HE detergent was used, or too much detergent
How to confirm Use only HE detergent at the recommended dose
- 3
A wet load left in the washer
What separates it There is an odor on the clothes and in the drum because a wet load was left in the washer
How to confirm Remove the load promptly at the end of the cycle
- 4
Cold water washes only
What separates it The detergent is not fully dissolved because only cold water washes were used
How to confirm Use warm or hot washes sometimes and run System Clean monthly
Before you touch a setting
Record this first — changing settings destroys the evidence
- Where the smell is strongest: gasket, drawer or drum
- How often System Clean has been run
- Whether the door is left closed
Try in this order
0 of 5 completedRun System Clean
ReversibleEmpty the drum, add 1 cup of liquid chlorine bleach or one pouch of washing machine cleaner to the detergent chamber, hold Spin Speed and Options for 10 seconds until CLn shows, and press START.
Rinse afterwards
ReversibleSelect Fresh Rinse at max spin speed with no detergent or bleach to clear residual bleach.
Clean the gasket
ReversibleScrub with a mildew stain remover and brush; dry the fold at the end of each wash.
Clean the dispenser drawer
ReversibleClean the dispenser drawer, using three quarters of a cup of bleach in one gallon of hot water, and wear gloves.
Leave the door ajar
ReversibleLeave the door and the drawer open for a few hours after use if no small children or pets are present.
Model-specific
What is true of this model and not of its siblings
- Daily habits from the guide
- Frigidaire's daily preventive list: remove items as soon as the cycle ends, leave the door ajar when the washer is not in use if no small children or pets are present, leave the dispenser drawer slightly open at the end of the wash day, dry around the door opening, gasket and glass, and periodically wipe the folds at the bottom of the gasket. Pouring one cup of chlorine bleach into the standpipe and leaving it a day is also listed for stubborn odor.
- Parts for this problem on the FFFW5000 (RepairClinic, 2026-09-20)
- door gasket, part number 137566001, at $155.27; coin trap tub to pump hose, part number 134639920, at $88.55; dispenser drawer handle frame, part number 137314510, at $75.55; drain pump, part number 137311900, at $165.95.
- Other models this page answers
- These steps also fit the FFTW4120 top-load washer, FLCE7522 laundry-center washer, FLXE52 laundry-center washer.
Stop boundary
When this stops being a self-service repair
- !If the smell is burning, stop and unplug the washer
- !If a sewer smell comes from the standpipe, call a plumber
Evidence ledger
Sources behind this answer
The published manual page that ties the FFTW4120SW top-loader to Frigidaire's use and care guide A07504301.
Frigidaire's own owner-support article titles for these three codes.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-20.
Exact questions
Common questions
How often should I run System Clean on the FFFW5000?+
Once a month for best results.
How do I start System Clean?+
Press and hold Spin Speed and Options together for 10 seconds until the display shows CLn.
Can I use bleach and washing machine cleaner together?+
No; use one or the other.
How do I fix severe odor?+
The guide's aggressive procedure uses 8 cups of bleach in the detergent compartment with the clean washer cycle, repeated if needed.
Can I leave the door open?+
Only if no small children or pets are present; an open door can entice them to climb in.