Hey Kiddo! If the Filter Remind function is ON, the microwave will remind you to clean or replace the grease filter every four months. When it is time to clean or replace the grease filter, the microwave displays the “Filter” message to remind you to clean or replace the grease filter. To remove the message, press the number 0 when the microwave is in standby mode. If you don`t want to receive this message, set the Filter Remind function off in My settings. ^Jecca