Hi,
I had the same problem when I charged mine for the first time. There is a very small hole on the back of the pacer, just above the bottom left screwhole. This is shown as the Reset on page 4 (section 1.3) of the downloadable Pacer user manual. I gently slipped a small safety pin into this hole until there was a subtle click...and all was fixed without a problem since. I believe this is a soft reset?
Sorry I can't paste a link with better instructions but I'm having trouble with the support section of the site.
Hope this helps.
Cheers,
Johno
