Whirlpool Washing Machine Error F21

⚡ Quick Answer: The Whirlpool Washing Machine F21 error code signifies a drainage issue, indicating that the washer is unable to drain water within the expected time.... ✅ DIY Fixable

What Does Error F21 Mean?

The Whirlpool Washing Machine F21 error code signifies a drainage issue, indicating that the washer is unable to drain water within the expected time. This often occurs during the drain or spin cycle, leaving water in the drum and causing the machine to stop mid-cycle. Common causes include kinks or clogs in the drain hose, a malfunctioning drain pump, excessive suds from overloading, or communication issues with the pressure switch or control board.

Common Symptoms:

  • Error appears during drain or spin cycle when washer fails to drain water within expected time (long drain).
  • Washer stops mid-cycle with water remaining in the drum.
  • Error persists despite normal operation of other functions.

Possible Causes

  • Drain hose kinked or clogged (high)
  • Malfunctioning drain pump (blocked or faulty) (medium)
  • Excessive suds or overloaded/imbalanced load (medium)
  • Pressure switch or control board communication issue (low)

How to Fix Error F21

DIY Fix Check and Clear Drain Hose and Filter

  1. Unplug the washer from power.
  2. Inspect the drain hose for kinks, twists or blockages; straighten and clear any obstructions.
  3. Locate and clean the drain pump filter (usually behind a lower front panel) by removing debris and rinsing.
  4. Reassemble and run a rinse/spin cycle to test drainage.

DIY Fix Reduce Load Size and Use Proper Detergent

  1. Remove excessive items to reduce load size.
  2. Use only the recommended amount of HE (High Efficiency) detergent to avoid excess suds.
  3. Run a normal or rinse/spin cycle to see if F21 clears.

Technician Only Inspect and Service Drain Pump or Electrical Components

  1. Disconnect power and access the drain pump assembly.
  2. Check the drain pump impeller and housing for obstructions or damage.
  3. Test the drain pump motor and wiring harness for proper function with a multimeter.
  4. Verify pressure switch operation and control board signal integrity.

Parts needed: Drain pump, Drain pump filter, Pressure switch, Control board (if faulty)

🛑 When to Call a Pro:
  • If cleaning the drain hose and filter does not resolve the issue.
  • If there are signs of pump motor failure (no sound or strange noise) after clearing debris.
  • If error persists and electrical or internal components are suspected.

Technical Specifications

wattage 60W
component Drain Pump
resistance 10-30 ohms
part_number W10605459
voltage_rating 120V AC

Common Questions

What does F21 error mean on Whirlpool Washing Machine?

F21 indicates a drainage problem where the washer fails to drain water in time, often leaving water in the drum.

Can I fix Whirlpool Washing Machine F21 error myself?

Yes, you can check and clear the drain hose and filter, reduce load size, and use the proper detergent to resolve the issue.

How much does it cost to fix F21 error?

Repair costs vary; pump replacement is typically mid-range, while control board replacement is higher.

When should I call a technician for F21?

Call a technician if cleaning the drain hose and filter doesn't work, or if you suspect pump or electrical component failure.

Sources & References

Data last verified: 2026-01-10

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