CostolioWhirlpool dishwashers and KitchenAid dishwashers error codes
5 dishwasher error codes for Whirlpool dishwashers, what each one means and what to try, paraphrased from Whirlpool's own source. Codes vary by model, so confirm in your own manual.
All codes
- F8E4 Water detected in the drip tray.
- F7E2 Wash motor error.
- F9E1 Long drain: the dishwasher is not draining.
- F6E1 User interface / main control error.
- H20 No water is being detected.
F8E4
What it means: Water detected in the drip tray. You can usually fix this yourself.
What to try
- Empty the drip tray.
- Make sure the float switch is connected.
- Look for leaks at the water connections.
F7E2
What it means: Wash motor error. This one often needs a licensed technician.
What to try
- Power cycle it.
- If the error code returns, schedule service.
F9E1
What it means: Long drain: the dishwasher is not draining. You can usually fix this yourself.
What to try
- Remove and rinse the filter.
- Check the drain hose to the sink for kinks or clogs.
- If it drains into a disposer, clear it and make sure the knockout plug was removed on new installs.
- Clear the air gap if you have one.
F6E1
What it means: User interface / main control error. This one often needs a licensed technician.
What to try
- Cut power for 30 seconds, then restore it.
- If the code returns, schedule service.
H20
What it means: No water is being detected. You can usually fix this yourself.
What to try
- Make sure the water supply to the dishwasher is on.
- Check the supply hose for kinks.
Source
- Reading and Understanding Whirlpool Dishwasher Error Codes (Whirlpool Product Help) (checked 2026-11-02)
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