F21 Error Code
📋 What Does F21 Mean?
Long Drain — water is taking too long to drain (over 8 minutes).
🔍 Common Causes
- 1Drain hose clogged or kinked
- 2Coin trap / pump filter clogged
- 3Faulty drain pump
- 4Drain hose too high
- 5Household drain slow or blocked
📞 When to Call a Pro
If pump filter is clear and hose is straight, the pump motor needs testing.
🔧 DIY Fix Steps
- 1Clean the pump filter: unscrew bottom front access panel, turn filter counterclockwise
- 2Check drain hose for kinks and blockages
- 3Run a Spin/Drain only cycle to test
- 4Use a drain snake if household plumbing is slow
Frequently Asked Questions
What does F21 mean on a Whirlpool washing machine?
Long Drain — water is taking too long to drain (over 8 minutes).
Can I fix F21 myself?
Yes, in many cases. Start with: clean the pump filter: unscrew bottom front access panel, turn filter counterclockwise If that does not resolve it, if pump filter is clear and hose is straight, the pump motor needs testing.
How much does it cost to repair error F21?
Estimated repair cost: $150–$350. This varies by region and technician.
Tools That Help With This Diagnosis
Basic troubleshooting tools grouped separately from the actual error-code explanation.
Multimeters
Useful for basic electrical checks when the repair path calls for it and the unit is safely isolated.
Driver sets
Useful when the first obstacle is simply reaching the part or hose involved.
Cleanup tools
Useful for drain and leak faults where standing water hides the problem.
Related Pages
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Open broader diagnosis, symptom, and first-step guides.
Diagnostic tools
See basic tools that help without mixing them into the code explanation itself.