F4 appears when water remains in the tub after the drain cycle finishes. It’s one of the most common codes, and often a clogged filter is the cause.
Brand: Whirlpool
Whirlpool Dishwasher Error Code F4 (Drain Fault)
F4 means water is staying in the tub after the drain cycle, usually a clogged filter.
Meaning
Possible causes
No cause is certain until it has been checked on the appliance.
- Likely Bottom filter clogged
- Possible Drain hose kinked or blocked
- Possible Drain pump jammed by debris
First checks
- Remove and clean the bottom filter under hot water.
- Check the drain hose and sink's P-trap if connected to it.
- Confirm nothing is blocking the pump impeller.
What not to do
- Running cycles repeatedly without cleaning the filter first.
An error code varies by brand
The same code can have a different meaning depending on the brand and model. Always check your appliance's manual before acting.
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When to call a professional
If the simple checks didn’t solve it, if the fix involves electrical wiring, gas, or the refrigerant circuit, or if you have any doubt at all: stop there and hand the appliance to a qualified repair professional.