E21
What code E21 means on a AEG washing machines, what causes it, and which part to check first.
● SEVERITY: LOW
AEG E21 means: Slow drain machine draining but taking longer than expected. The documented cause is: Partially blocked pump filter. Partial blockage in drain hose. Pump impeller sluggish but not failed.
What E21 means
Slow drain machine draining but taking longer than expected
The display shows E21 and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by whitegoodshelp.co.uk
| DOCUMENTED CAUSE OR CHECK |
|---|
| Partially blocked pump filter |
| Partial blockage in drain hose |
| Pump impeller sluggish but not failed |
Replacement parts
Tools you'll need
Before you open anything
Unplug the machine and close the water tap before removing any panel. Water and mains electricity sit centimetres apart inside a washing machine. If the drum still holds water, drain it from the filter first — it can be scalding.
What to check, in order
From the quickest check to the one that needs a technician.
Find a specialist
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Frequently asked questions
What does E21 mean on a AEG?
Slow drain machine draining but taking longer than expected The documented cause is: Partially blocked pump filter. Partial blockage in drain hose. Pump impeller sluggish but not failed.
Can I fix E21 myself?
It depends on the part involved: Partially blocked pump filter. Partial blockage in drain hose. Pump impeller sluggish but not failed. Clearing a filter or straightening a hose is within reach of anyone; anything behind a panel means mains electricity and water together — that is a job for a technician.
Does AEG use other codes on this appliance?
Yes: we document 41 other codes for AEG on this washing machines. They are listed at the bottom of this page, each with its own meaning.
Does the same code mean the same thing on other brands?
Often not. The same two characters can point to completely different faults depending on the manufacturer — always check the page for your own brand.