Fi warning light - TA xlv 700

So - randomly, and not very often, the Fi warning light will activate - most times, if not all times, after starting the bike. Previously when I have noticed this, I switch off and re-start the bike and the issue is resolved. This morning, however, I had to try this "Fix" about 5 times, the last attempt after I had ridden to work, when after switching off and restarting the bike, the light cleared.

I tried to google without much success - any ideas and is this a common issue - I somehow suspect it might be...

Thanks in advance