How do I deal with a musty smell in a washing machine using its approved cleaning cycle?

Start with the washer’s exact model number and manual, then look for its washer-cleaning or odor-removal instructions. Confirm the named cycle and the specific cleaner or procedure before starting. Do not substitute a different cleaner or add detergent or other chemicals unless that model’s instructions explicitly call for them.

The supplied Whirlpool guidance applies to the Whirlpool models it covers: it recommends Clean Washer monthly or every 30 cycles, says to follow the model manual for the exact cycle and cleaner procedure, and advises leaving the door or lid open afterward to help the interior dry. It also says not to add detergent or other chemicals when using either of its listed cleaning procedures. Those directions are not a universal schedule or recipe for every brand. [S1]

Don’t guess at a cleaning product or combine products. The available guidance does not establish which cleaner, amount, or cycle is appropriate for your particular washer. Pause until you can confirm the instructions for the exact model—use the model number to locate the manual or ask the manufacturer for the model-specific directions.

A safe planning note while you look is: “Model: [model number]. Cycle named in manual: [cycle]. Cleaner and amount specified: [details]. Other products prohibited or allowed: [manual wording].” If you can’t verify a step, leave it blank rather than filling it in from another washer’s instructions.

Check the manual for separate drawer and seal instructions; don’t assume the cleaning cycle also cleans them or that every washer’s parts can be cleaned the same way. For the dispenser addressed by the supplied Whirlpool guidance, it says to remove the drawer, wipe it with a damp cloth, and dry it. That page also says the dispenser is not dishwasher safe and includes a model-specific bleach restriction. Follow your own model’s instructions rather than applying those details to another washer. [S2]

For the seal, use only the procedure specified for your model. The supplied sources do not give a general seal-cleaning procedure for all washers, so I can’t recommend a cloth, cleaner, or technique as universal guidance. Avoid combining cleaning products.

Yes. Treat the manual as the schedule authority for your washer. Here is a copyable plan; fill in the blanks from that manual rather than borrowing another model’s interval or instructions:

Washer cleaning schedule

1. Model: [brand and model number]
2. Approved cleaning cycle: [exact cycle name from manual]
3. Cycle timing: [interval or trigger stated in manual]
4. Cleaner and procedure: [exact product and steps stated in manual]
5. Dispenser: [manual’s cleaning steps and interval]
6. Seal: [manual’s cleaning steps and interval]
7. After the cycle: [manual’s instructions; for the Whirlpool models covered, the guidance says to leave the door or lid open to help the interior dry]
8. Record completed: [date or cycle count]

For the Whirlpool models covered by the supplied source, the suggested timing is monthly or every 30 cycles; use the manual to confirm the exact procedure for the specific washer. [S1] The source does not establish that this timing applies to other brands or models.

Don’t repeat cycles more often than the manual directs or add extra products as a trial. Check that you followed the specified cycle and cleaner procedure, and that the drawer and seal were handled only as the manual allows. Note what you did and when. If the odor continues, contact the manufacturer or a qualified appliance service professional and share the model number, the steps completed, and when the smell occurs. The supplied guidance does not establish the cause of a persistent odor or a fix for every washer.