Dishwasher will not drain and shows E24; water may be standing in the tub.

Safety: Turn off power. Expect water when disconnecting the drain hose.

E24 is usually due to an external drain blockage or installation issue.

• Check sink trap: If the dishwasher drain hose connects to a sink trap spigot, remove the hose and inspect the spigot for blockage. Clean thoroughly.
• Inspect drain hose: Check the entire length of the drain hose for kinks, crushing, or clogs. Flush it with water or compressed air.
• Verify installation height: Ensure the drain hose loops up to the recommended height (usually under the worktop) to prevent backflow.
• Internal checks: Remove filters and inspect the sump and drain pump inlet for debris.
• Test drain: After clearing, run a drain or cancel program to verify that water is pumped out quickly.