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Whirlpool Washer Error Codes: The Full List
Whirlpool washers, including the Duet and later front load families, report faults as F codes, often shown alternating with the remaining cycle time. Most F codes describe a condition the control measured, like a drain that took too long, rather than naming a broken part directly. Start with the meaning, then the guide.
Water and drain codes
| Code | What It Means | Guide |
|---|---|---|
| F21 | Long drain: the tub did not empty within the allowed time | Full F21 guide |
| F20 / FH | No water detected entering, or the pressure switch did not trip after filling | Full F20 guide |
| F24 | Overflow: the washer detected a water level that is too high | Listed here, full guide in progress |
| Sd / SUD | Excess suds: the washer extends rinsing and draining to clear detergent suds | Listed here, full guide in progress |
Door and control codes
| Code | What It Means | Guide |
|---|---|---|
| F22 | Door lock error: the door failed to lock at cycle start | Listed here, full guide in progress |
| F28 | Moisture sensor communication problem on models with that sensor | Listed here, full guide in progress |
| F35 | Analog pressure sensor error, the control cannot trust the water level reading | Listed here, full guide in progress |
| LOC | Not a fault: control lock is on. Hold the lock button for 3 seconds to release | Listed here, full guide in progress |
Before You Call Anyone
Whirlpool front loaders hide their most useful service part in plain sight: the drain pump filter trap. It is behind the lower front on most models and it explains the majority of F21 faults and a good share of drain smells. Clean it before you suspect the pump, and keep a shallow pan ready, the trap holds water even in an empty-feeling tub.
Frequently Asked Questions
What does F21 mean on a Whirlpool washer?
F21 is a long drain fault: the control expected an empty tub and did not get one in time. Clean the pump filter trap first, then check the hose and standpipe.
Why does my Whirlpool flash F and then a number alternately?
The display alternates between the fault code and other information such as remaining time. The F number is the code to look up here.
Are Whirlpool and Kenmore codes the same?
Many Kenmore front loaders were built by Whirlpool and use the same F code system, including F21 for long drain. Check the model plate to confirm the maker.
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