Beep beep beep
Temporary Fix: unplug the dryer or cut its power at the circuit breaker panel, when not in use. If the dryer alerts/alarms are set to silent and the beeping happens when it's not in use, chances are it's the same beeping you hear when you first introduce power to the unit or press start. This may indicate a short affecting the control board. If you need to press start multiple times to get the dryer started, then the control board components are most likely starting to fail.