Whirlpool Washer Error Code F21 (What It Means & How to Fix It)

Are you seeing Whirlpool washer error code F21 on your display? Don’t worry. This is a common problem, and in many cases, you can fix it yourself without calling a technician.

In this guide, we’ll explain what the F21 error code means, what causes it, and how to fix it step by step.

Whirlpool Washer Error Code F21

What Does Whirlpool Washer Error Code F21 Mean?

The F21 error code indicates a long drain problem. This means your washing machine is taking too long to drain water from the drum.

When this happens, the washer stops the cycle and displays the F21 code to prevent further damage.

Common Causes of F21 Error Code

  • Clogged drain pump filter
  • Blocked drain hose
  • Faulty drain pump
  • Kinked or bent drain hose
  • Electrical issue with the pump

Safety First

  1. Unplug the washer from the power outlet.
  2. Turn off the water supply.
  3. Place towels under the machine to catch water.

Step 1: Check the Drain Hose

A blocked or bent drain hose is one of the most common causes of the F21 error.

  1. Move the washer away from the wall.
  2. Inspect the drain hose for kinks or bends.
  3. Remove the hose and check for clogs.
  4. Flush it with water if necessary.

Step 2: Clean the Drain Pump Filter

The drain pump filter can collect lint, coins, and debris over time.

  1. Locate the lower front access panel.
  2. Place a towel underneath.
  3. Slowly open the filter cap.
  4. Allow water to drain out.
  5. Remove debris and clean the filter.
  6. Reinstall the filter securely.

After cleaning, plug the washer back in and test it.

Step 3: Inspect the Drain Pump

If the error persists, the drain pump itself may be faulty.

  • Listen for unusual noises during the drain cycle.
  • If the pump is silent, it may not be receiving power.
  • If it hums but doesn’t drain, it may be blocked or damaged.

You may need to test the pump with a multimeter and replace it if defective.

Step 4: Reset the Washer

Sometimes the error code remains even after fixing the issue.

  1. Unplug the washer for 5–10 minutes.
  2. Plug it back in.
  3. Run a short cycle.

This may clear the error code.

When to Call a Technician

You should contact a professional if:

  • The drain pump needs replacement and you are not comfortable repairing it.
  • The control board appears faulty.
  • The washer continues displaying F21 after troubleshooting.

Frequently Asked Questions

Can I still use my washer with error code F21?

No. The washer will not complete cycles properly until the draining issue is fixed.

How much does it cost to fix Whirlpool F21 error?

Repair costs typically range between $120 and $300 depending on the issue.

Is F21 a serious problem?

It is usually not serious and often caused by a simple clog in the drain system.

Final Thoughts

Whirlpool washer error code F21 usually indicates a long drain issue caused by clogs or pump problems. In many cases, cleaning the drain hose and pump filter solves the problem quickly.

If the error persists after following these steps, consider contacting a certified appliance repair technician.

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