Beeping

johndailey

Hi all. I posted this subject on another forum (not CC) without much response. I own an Amara 380/2 (2010). If running on the leisure battery, I turn off the Master switch, three beeps are heard from inside the van from roughly the forward lower offside.
All my electrics are working so I am curious not worried. I stress that I am on the leisure battery and not on EHU. Any suggestions/answers will be greatfully welcome.