A:Answer I do not own this microwave but, per page 19 of the manual, accessed 11/21/24 via the dropdown "From The Manufacturer":
"Silent Mode: "To activate the silent mode: In waiting state, press and hold “8” for 3 seconds. A long beep will sound. When you press the keys, it does not make a sound. This also disables the end of cooking reminder."
There *may* be beeping other than that from pressing the keys or end of cooking....