Whirlpool Dryer Error F21

⚡ Quick Answer: The Whirlpool dryer F21 error code suggests a potential issue with the door lock mechanism, which may prevent the dryer from starting and can lead to ... ✅ DIY Fixable

What Does Error F21 Mean?

The Whirlpool dryer F21 error code suggests a potential issue with the door lock mechanism, which may prevent the dryer from starting and can lead to unusual beeping sounds. Ensure you've correctly identified your appliance type, as this code is often associated with washer drain problems. To troubleshoot, power off the dryer, verify the model, and check the user manual for documented error codes.

Possible Causes

  • Door Lock Mechanism

How to Fix Error F21

DIY Fix Verify appliance type and model

  1. Locate the full model number of your dryer (on the door jamb or back panel).
  2. Confirm whether the code appears on the dryer control/display or on an adjacent washer if part of a stacked/combination unit.
  3. Refer to your specific model’s manual error code section for that dryer.

DIY Fix Basic checks for error codes on dryers

  1. Clear the display by powering off the dryer (unplug and wait 30 seconds, then plug in).
  2. Check for **actual documented codes** such as F-CODES that are known for dryers (consult manual).
  3. If heating or function problems occur, check lint filter and vent for blockages.

Technician Only Service check and diagnostic

  1. Use the exact model number to look up the Whirlpool dryer service manual or technical sheet.
  2. Connect a diagnostic tool (if available) to read valid fault registers for that dryer model.
  3. Inspect control board and wiring harness for faults if dryer symptoms are present (e.g., no heat, no spin).
🛑 When to Call a Pro:
  • If the error code persists after basic checks and you cannot find it in the dryer’s official manual.
  • If the dryer is not functioning normally (no heating, no tumbling, abnormal noises).

Technical Specifications

wattage 500W
component Door Lock Mechanism
resistance 0-5 ohms
part_number W10812395
voltage_rating 120V AC

Common Questions

What does F21 error mean on whirlpool dryer?

The F21 error indicates a potential malfunction in the door lock mechanism.

Can I fix whirlpool dryer F21 error myself?

Yes, you can troubleshoot by checking the door lock and verifying the model.

How much does it cost to fix F21 error?

Repair costs vary by model and region; consult a technician for an estimate.

When should I call a technician for F21?

Call a technician if the error persists after basic troubleshooting or if the dryer isn't functioning normally.

Sources & References

Data last verified: 2026-01-10

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