Whirlpool · Dishwasher · Filter/Blockage Issue

Whirlpool Dishwasher Error FA

Whirlpool dishwasher error FA usually indicates a filter or flow restriction. ECL records this code as “Optical Water Indicator Fault”. Common causes on this page include Dirty optical sensor and Excessive grease in sump, but the exact cause can vary by model and appliance generation. Start with the safe external checks below, confirm model-specific guidance using your exact model number, and arrange repair help if the code returns or any safety warning applies.

Quick answer: Optical Water Indicator Fault

In simple terms

Whirlpool dishwasher code FA usually means Optical Water Indicator Fault. Follow these four steps.

1Understand the code

See what the code usually means and why it may have appeared.

2Try safe checks

Try only the simple checks listed on this page. Do not take the appliance apart.

3Check if it is safe to use

Check the safety section before you keep using the appliance.

4Choose the next step

Use the next-step box to see whether to keep checking, find a part by model or get repair help.

What Whirlpool FA means

The optical water sensor (OWI) is detecting dirty water or has failed.

Common causes

  • Dirty optical sensor
  • Excessive grease in sump
  • Faulty sensor

Safe checks you can make

  1. Clean the sump and filters thoroughly
  2. Run a hot maintenance wash

Repair help

Try the safe checks first

Start with the simple checks on this page. If the code comes back, stop guessing and get repair help.

Still showing? Get repair help

No obligation. Your contact details are only shared after you submit the repair request, and only with a suitable ECL Verified repairer where coverage is available.

When to stop and call an engineer

If standard user maintenance does not clear the error, or if you suspect an electrical component failure.

Your model may be different

Error-code meanings can vary by model, market and appliance generation. Confirm Whirlpool FA against the instruction manual or support information for the exact model number before replacing parts or treating this page as a model-specific diagnosis.

Where this information comes from

Publisher: Error Code Lookup Editorial Team. This page is independent information written in our own words and reviewed with safety boundaries in mind.

Manufacturer information: Whirlpool UK. Use the exact model number to verify model-specific wording and instructions.

Last reviewed: 2026-05-18

How Error Code Lookup researches and verifies pages · Report a correction or provide model-specific evidence

Frequently asked questions

What does FA mean on a Whirlpool dishwasher?

The optical water sensor (OWI) is detecting dirty water or has failed.

What usually causes Whirlpool error FA?

Common causes include Dirty optical sensor; Excessive grease in sump; Faulty sensor.

Can I safely fix FA myself?

Some basic external checks may be safe to try first. Stop if there are leaks, burning smells, overheating, electrical issues, unusual noises or repeated failures.

When should I call a professional for FA?

If standard user maintenance does not clear the error, or if you suspect an electrical component failure.

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