May 10, 2025

Whirlpool Washer F21 Error Code Explained: Step-by-Step Fix Guide

The F21 error code on Whirlpool washers indicates a drainage problem—water isn’t leaving the drum properly during the wash cycle. This issue is common, but fortunately, it can often be resolved without calling in a repair tech.

Below is a complete troubleshooting guide for fixing the F21 error on most Whirlpool front-load washer models, including:

• WFW70HEBW0, WFW80HEBC0, WFW8640BW0
• WFW9150WW00, WFL98HEBU0, WFW86HEBW1
• WFW72HEDW0, WFW94HEXL2, and other similar models

Step 1: Try a Simple Reset

Sometimes, the F21 code appears due to a power glitch. Try resetting the washer before moving forward:

1. Unplug the washer or turn off power at the breaker.
2. Wait 2 minutes to let the machine fully power down.
3. Restore power and check if the error clears.
4. If the code reappears, proceed to the steps below.

Step 2: Check the Drain Hose

Start with the easiest fix—your drain hose could be kinked or clogged.

1. Pull the washer forward and inspect the drain hose connected at the back.
2. Straighten any tight bends or pinches in the hose.
3. Disconnect the hose and flush it with water to check for internal clogs.
4. Ensure the hose height is correct—about 24 inches off the floor for front-load models.

Step 3: Access and Clean the Drain Pump and Filter

Blocked drain pump filters are the most common reason for F21 errors. Follow these steps to access and clean them on a Whirlpool front-load washer:

Accessing the Drain Pump:

1. Unplug the Washer: Always disconnect power before starting any repair.
2. Remove the Front Panel: Use a screwdriver to remove the screws along the bottom front of the washer. Once removed, pull the panel forward and then down to detach it.
3. Locate the Drain Pump: It’s usually positioned at the bottom front of the washer with two hoses connected—one from the tub and one to the drain.

Cleaning the Drain Pump Filter:

1. Place towels or a shallow pan underneath the pump area to catch any water.
2. Unscrew the drain pump filter cap (at the front of the pump) and remove the filter.
3. Clean the filter thoroughly under running water. Remove all lint, coins, hair, or debris.
4. Inspect the filter housing and clear out any remaining gunk.
5. Reinsert the clean filter and tighten the cap securely.

Step 4: Check the Drain Pump for Damage

If the filter and hoses are clear but the F21 error remains, the drain pump motor itself may be failing.

1. Unplug the washer again and access the pump as above.
2. Look for any obstructions inside the pump impeller (coins, pins, fabric, etc.).
3. Disconnect the pump’s wiring harness and test for continuity with a multimeter.
4. If there’s no continuity or visible damage, the pump should be replaced.

Need A Replacement Water Pump? Click The Image Below.
Verify It's the correct drain pump for your washer before ordering.

Step 5: Reassemble and Test

Reattach the front panel and plug the washer back in. Run a rinse/drain or spin cycle and check if the F21 error has cleared. If the machine drains correctly, the problem is resolved.

Still Seeing the Error?

If the F21 code still appears after completing all steps, the issue may lie in the washer’s control board or wiring. At that point, professional diagnosis may be required.

Fixing the F21 error yourself can save a costly service call. Keep your drain hose, filter, and pump clean regularly to avoid this error in the future.