Was your first one that failed connected to a 1Link? Seems the issues I read about always seem to be tied to the 1Link.I bought a WAV pump 3 years ago and it failed after 11 months. After quite a bit of back and forth with Neptune, they replaced it for free with a new one. At the same time I bought a second one. Both have been running for over 2 years now with no problems. I really love how they just connect right up to the power bar (EB832) with no controllers or power supplies. And how simple it is to put them in low power mode when the power goes out and my system switches to battery backup.
I'm sure it's been said before but remember that no one starts a thread just to say that their WAV pumps have been working fine. It's possible that 95% of them are running like champs and we just never hear about it.