I've read of similar problems in the forum but still hope someone has a brainwawe.

Just bought an Aquastream XT ultra and mounted for test purpose on an empty chassis with aquabox and aquaero. The pump was connected to aquaero through the aquabus cable only, and everything works fine.
So I've installed the radiator (XT 360) and a flow sensor (connected to the aquaero), one side of the USB cable was connected to the pump, the other side was free as I still don't have the motherboard mounted.
Powered on but liquid didn't move, the pump made some vibration from time to time, nothing moved, than I realized that the red LED was ON and still.
Powered off, set the jumper to reset, powered on, removed jumper, but nothing happens: red LED still on. Naturally I tried all possible sequence of power and jumper combination, but nothing.

The pump red LED remains ON.

The only action I did, that I may figure out as "improper", is the use of some force to push the pump-reservoir module into the 5"25 slot, I didn't use much strength but the power connector touch the chassis side and the module don't fit easily into the slot. Anyway can't see anything broken or loose.... just the damn red LED.

Hope someone could help, before I send the pump back to assistance.

Thanks

SOB!....

thanks