Steam oven shows F51; water leaks inside cabinet or under appliance.

Safety first: Disconnect mains power and close any water supply valve. Allow the appliance to cool before inspection.

Step-by-step checks:

• Remove appliance: Carefully pull the oven out of the cabinet to inspect underneath and behind.
• Check for visible leaks: Look for water traces on hoses, joints, and around the steam generator. Tighten hose clamps and replace any cracked hoses.
• Clean condensate drain: Ensure the condensate outlet and hose are not blocked by scale or debris. Flush with warm water if accessible.
• Dry leak sensor area: Some models have a leak sensor tray. Dry the tray and sensor thoroughly; if water reappears, locate and fix the leak source.

When to call a technician: Steam leaks can damage electronics and insulation; have an authorized technician repair and pressure-test the system.