How do I put the feeder into silent mode?

-Unplug the feeder and then replug while holding in the check button.

-The feeder will show 'run' and you just need to scroll to 'Aud' meaning audio.

-Hit the check button and then the LCD will show 'SiL'

-Press the minus button so that the screen shows 'loud' and then hit the check button and the feeder will beep when an alert code appears.