Maxi doser pumps freeze running same time

Hi Matthias,

I purchased a set of Maxi 1 week ago in the US.
During dry run for the first time. I program both pump to run at the same time.
Dosing 2000ml each at speed #2. Both pump stopped before completing their task.
I am only able to communicate with the MAxi again only after a hard reset on the doser.

I have highlighted the issue here in REEF2REEF starting from post #41
Apparently this issue also face by some others.

Can I get my maxi doser replaced?