Dishwasher displays E15 and will not start; often accompanied by the sound of the drain pump running continuously.

Safety first: Switch off power at the breaker and close the water supply immediately.

Steps:

• Check for water in base: Remove the toe-kick panel and inspect the base tray. If water is present, soak it up with towels or a sponge.
• Reset float: Ensure the float switch moves freely once the water is removed. Sometimes gently lowering the float will reset the error, but the leak source must still be found.
• Inspect components: Run a short fill cycle while observing the base (keeping clear of live parts). Look for drips from the sump seal, hoses, circulation pump, or inlet valve.

When to call a technician: If you identify a cracked tub, failed sump seal, or cannot safely locate the leak, professional repair is necessary.