AEG washing machine does not drain or stops with water in the drum, E20 displayed

Safety first: Unplug the washer. Water may spill when opening the filter; keep towels and a shallow tray ready.

• Clean the pump filter: Open the small access door at the front bottom. Place a tray under the filter cap. Slowly unscrew the cap to let water drain. Remove the filter and clean out coins, lint, buttons, and debris. Check inside the pump housing for obstructions.
• Check pump impeller: With the filter removed, gently spin the impeller with your finger. It should turn freely with slight resistance. If jammed or wobbly, the pump may be damaged.
• Inspect drain hose: Ensure the hose is not kinked or crushed behind the machine. Disconnect from the standpipe or sink trap and flush through with water to clear blockages.
• Test a drain cycle: Refit the filter securely, reconnect power, and select a drain or spin program. Listen for the pump running. If it hums but does not pump, or is silent, the pump motor may have failed.

If cleaning does not resolve E20, the AEG drain pump assembly likely needs replacement.