When it beeps is there any of the 4 dryness LEDs lit if so which ones. If no lights are on then maybe the door is not closed properly or the door switch is not getting pushed right in far enough.
Lincoln Appliance NZ, June 2016
Less than one minute with a Google search gets me to the repair manual for your machine. The beeping is an alarm. The fault should be shown by the LEDs on the front panel.
See the manual here (download a copy and save to your favorite online backup service. Google Drive is good, especially if you already use Gmail
