I also have experienced issues with their pumps. While I find the Vectra pumps to perform very well while functional, I've had three different M2's fail inside of two years. However, I must give Ecotech customer service credit for replacing one unit that was outside the warranty period.
I've since opted to purchase Jebao return pumps for my systems at a fraction of the cost and keep a couple replacement units around just in case (which is still more cost effective that replacing Vectra's). The real bummer is their incompatibility with the Ecotech battery backup, which provided me with peace of mind.
I’ve had my Jeabo running a skimmer with a mesh mod (horribly imbalanced and just hell on the bearings) for about 4 years. it started making noise so I replaced it proactively and kept it as a spare. It worked like a champ for the month I was dealing with Echotec support.
Epilogue, seems that a year ago or so the M1 PS took a dump and I replaced it with an amazon PS but dummy me used a 24V PS and the M1 ran fine with it but the M2 would not. I was unaware of this but I did send the entire thing back to ecotech, where they replaced the pump body and the controller for about $100 with shipping. They informed me that the the M1 powe supply was fine and I didn’t need to replace it. Then they sent it all back to me INCLUDING THE 24V PS. Thats why the new crap didn’t work. After a week of bickering with them, one tech took the time to read my invoice which had a line that said: “not a Vectra power supply”. Nothing about it being the wrong voltage. SMFH.
With that clue I read the labels and bought a 3A 36V amazon power supply, that’s 108VA and the devise only calls for 80VA, now the pump runs fine.
The GUI is still about as counter-intuitive as you could Imagine and I stayed up 2 hrs past my bed time last night figuring out and tuning it to run at my preferred rate. It’s working again.
Now I have a never been wet and only out of the box once reef octopus VarioS 4 with no use for it. It only has an 8’ cord and I need 10 feet.