The option to silent audible tones may not be applicable on all models so you want to check your Owner’s Manual.

For applicable models - When selecting a function on your display, an audible tone is heard each time a key is pressed. If you desire, the display can be programmed for silent operation.

To set the controls for silent operation:

Press and hold Start Time for 6 seconds. The display will beep once and then you can release the key.

The controls are now set for silent operation.

To return your audible tones to normal operation:

Press and hold Start Time again for 6 seconds until the display beeps once and then you release the key. The controls are now set for audible operation.