What Does Error Code E21 Mean on an Electrolux Washing Machine?
Clean the drain pump filter — located behind the small access panel at the bottom front of the machine — removing any debris or foreign objects, then restart the cycle to clear the error (takes about 10 minutes).
Fault description
Error code E21 on an Electrolux washing machine signals a problem with the drainage pump. The machine has detected that water is not being pumped out at the expected rate, or that the pump is not operating at all. This is part of the machine's self-monitoring system, which checks pump performance during every drain cycle.
When E21 appears, the wash cycle will typically pause or stop, and water may remain in the drum. The machine will not spin until the drainage issue is resolved, since spinning with standing water can cause further problems. You may also hear the pump attempting to run, or notice complete silence where you would normally hear draining.
The good news is that the most common cause — a blocked filter or foreign object in the pump — is something most homeowners can resolve without specialist tools in under 15 minutes.
Causes
- Blocked drain pump filter — Lint, coins, hair grips, and small items of clothing can accumulate in the pump filter over time, restricting water flow and causing the pump to struggle or stop. This is by far the most frequent reason for an E21 fault.
- Foreign object jammed in the pump impeller — Small hard objects such as coins, buttons, or broken underwire can pass through the filter and lodge directly in the pump impeller, preventing it from spinning. Even a partial obstruction can trigger the E21 error.
- Kinked or blocked drain hose — If the drain hose behind the machine is kinked, crushed, or partially blocked with debris, water cannot exit freely and the pump is put under excessive strain. Check the full length of the hose from the machine to the standpipe or sink connection.
- Faulty drain pump motor — If the pump motor has burned out or failed electrically, it will not run regardless of whether the path is clear. This is less common but becomes the likely cause once blockages have been ruled out.
- Wiring or connection fault to the pump — Loose, corroded, or damaged wiring between the control board and the pump can interrupt the electrical signal needed to run the pump. This type of fault usually requires a service technician to diagnose safely.
- Control board fault — In rare cases, the main control board may fail to send the correct signal to the pump even when the pump itself is undamaged. This is typically a last-resort diagnosis after all other causes have been eliminated.
Step-by-Step Fix
- 1
Switch off and unplug the machine
Before doing anything else, turn the machine off at the dial and unplug it from the wall socket. This is essential for safety before you access any internal components. Wait two minutes to allow any residual electrical charge to dissipate.
- 2
Drain residual water manually
Locate the small access panel at the bottom front of the machine — it usually clips or screws open. Place a shallow tray and some old towels underneath. Slowly unscrew the emergency drain hose cap or the filter cap to let the remaining water drain out gradually. Do this slowly to avoid a sudden flood.
- 3
Clean the drain pump filter
Once the water has drained, fully unscrew the filter cap and pull the filter out. Remove any lint, debris, coins, or foreign objects. Rinse the filter under a tap until it is clean, then check inside the filter housing with a torch for anything left behind. Refit the filter firmly — a loose filter will cause leaks.
- 4
Check the pump impeller for obstructions
With the filter removed, reach carefully into the housing and try to turn the pump impeller (the small plastic rotor) with your finger. It should spin freely with slight resistance. If it is stuck or you can feel something hard, use long-nose pliers to carefully extract the obstruction.
- 5
Inspect the drain hose
Pull the machine forward slightly and check the drain hose along its full length. Straighten any kinks and ensure the hose is not pushed too far into the standpipe, which can create a siphoning effect. The hose end should sit no deeper than 15 cm into the standpipe.
- 6
Plug in and run a test cycle
Reconnect the machine, select a short cotton cycle or a drain-only programme if your model has one, and observe whether the machine drains normally and the E21 error clears. Stay nearby for the first few minutes to check for leaks around the filter cap.
- 7
Reset the machine if the error persists
If E21 still shows after the steps above, try a full reset by unplugging the machine for five minutes, then plugging back in and restarting. If the error returns immediately, the fault is likely a failed pump motor or an electrical issue that requires professional diagnosis.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
If you have cleaned the filter, cleared any obstructions from the impeller, and confirmed the drain hose is unobstructed, but the E21 error continues to appear, the pump motor itself has likely failed. A failed pump will often be completely silent during the drain phase, or you may hear a faint hum with no water movement — both are signs the motor is not functioning.
You should also contact a service technician if you notice burnt smell coming from the machine, visible damage to wiring near the pump, or if the error code returns within a few cycles of clearing. Electrical faults of this kind are not safe to investigate without proper training and equipment.
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Frequently Asked Questions
Can I still use my Electrolux washing machine while it shows E21?
No — you should not run the machine while E21 is active. The drum may contain standing water, and continuing to use it without resolving the drainage fault can put strain on the motor and other components. Resolve the fault first, then resume normal use.
How often should I clean the pump filter on my Electrolux washing machine?
Every one to three months is a reasonable routine for most households. If you wash heavily soiled items, pet bedding, or do very frequent laundry, clean it monthly. Regular cleaning takes less than five minutes and significantly reduces the risk of E21 and similar drain faults.
The pump filter is clear but E21 keeps coming back — what should I check next?
Check the drain hose for kinks or blockages, and make sure it is correctly positioned in the standpipe. If the hose is fine, the pump motor may be failing intermittently. An intermittent fault like this is best diagnosed by a service technician using a multimeter to test pump resistance and voltage.
How much does it cost to replace a drain pump on an Electrolux washing machine?
The pump part itself typically costs between £20 and £50 depending on the model. If you are comfortable with basic appliance repair, it is a job many homeowners can do themselves. A service technician call-out to supply and fit the pump will usually add £60–£120 in labour, varying by region.
Will E21 clear itself once the blockage is removed?
In most cases, yes — once you have cleared the blockage and restarted the machine, the error will not reappear if the pump is now running correctly. If the error code is stored in the machine's memory and does not clear after a successful drain, try unplugging the machine for five minutes to perform a full reset.