تحتاج فقط الى تغيير فلتر الماء الداخل للغسالة حسب الكود F15 9 Programs – 15 Place Settings – Grey LFP4P23WTLOX60HZ How to fix Ariston F15 error? This error message indicates that an anti-flooding overflow is taking place. This may be related to a failing rubber gasket around the dishwasher door, a defective water inlet valve, or a faulty float switch or sensor. The float and switch sensor is activated by pressure and if faulty will need to be replaced.