MP40QD runs 60 seconds then dies

[Humongous]

As the title says I bought a used MP40QD and it ran fine for at least a month. I decided to move it a little higher in the tank, about an inch to be exact, and now it only runs 60 seconds then the driver shuts off. The power supply is fine, I checked the wet side and it's fine as well. I decided to pull the dry side apart to inspect the bearings since it's long out of warranty and they all spin great. This is actually the second MP40QD that's done this to me so I'm a little confused as to the fix. Could it be the driver? If it is the driver, why would it suddenly go in to this mode of shutdown? Kind of bummed about it really as a friend convinced me to give these a try and I'm not Ecotech bashing just looking for a solution.

 

[Sleeping Giant]

Have you tried restarting the controller?

 

[Sleeping Giant]

Pdf of manual

 

[Humongous]

Have you tried restarting the controller?

Yes I followed the factory reset procedure and the same thing happens.

 

[DaJMasta]

I haven't used them myself, but does it report any sort of error message? You could try running at like quarter speed and see if the fault takes longer to happen - if this is the case, the controller electronics may be overheating and shutting themselves down to prevent further damage or fire, and you'd probably need the controller module replaced, but this isn't necessarily the only potential fault.

 

[Humongous]

I haven't used them myself, but does it report any sort of error message? You could try running at like quarter speed and see if the fault takes longer to happen - if this is the case, the controller electronics may be overheating and shutting themselves down to prevent further damage or fire, and you'd probably need the controller module replaced, but this isn't necessarily the only potential fault.

So I did in fact try that at several speeds and it's the same result every time. There isn't any extra heat, noise, or vibrations. Just runs, 60 seconds later, Driver shuts off.