Neptune cor-20 slowed to a trickle?

[Llemonz]

Wondering if anyone has any experience e with this pump slowing down. Got home today and my sump was really high. Have been running the cor-20 at %50.. barely anything coming out of return pipe to display. Took it apart, looked for an obstruction. Nothing. Put it back together, turned flow back to 100% and just enough to run sump.

Even in the sump, not attached to return line, only a weak flow was coming out of the cor-20 with no head pressure. What’s wrong with my pump?? Panic ordered a replacement just to be safe if I can’t fix this one

 

[Water Dog]

Is it still under warranty? Curious to see how Neptune will handle helping you.

 

[ksed]

Any updates?

 

[BornHandy]

Watching... I bought a cor-20 for my build several months ago. It's still in the box because my tank isn't ready yet, and now I am thinking I need to check it...

 

[amazongb]

Possibly overheating?

 

[Holy_makerel]

Watching... I bought a cor-20 for my build several months ago. It's still in the box because my tank isn't ready yet, and now I am thinking I need to check it...

Mine is still in the box as well