I was going to post a new thread about this, but this may speak to it.
We had 6 (six!) Novo's from our rental line fail within about three months of each other. All of them got the same HWERR:009 error, which is the pressure sensor, I believe. Their customer service has been solid and we've gotten them all replaced for free, but man it was frustrating for a while.
Ha. We’ve had 9 fail. All replaced by SUUNTO but they claimed complete ignorance of the problem when I approached them at DEMA. (Wink wink nudge nudge).