Sometimes, I havent figured out when exactly, my D5 NEXT starts up with red flashing and buzzer alarm, showing "Pump speed is too low". In few seconds alarming, though, it starts up and speeds up to its normal (set in aquasuite) speed.
Pump is SATA, USB and aquabus connected, and is set at 36% (~3040rpm speed) via aquasuite, aquaero -> Pumps section.

I have two pumps in a loop, in series, but not directly one after another. Second pump EK D5 PWM is connected to D5 NEXT's Fan channel and starts up fine.

D5 NEXT's never shows such alarm if I hard power off PC before startup. In other words, after cold start up it always starts at max speed and in few secs slow down to its set in aquasuite speed. Such kind of "reset" makes pump to start normally for 5-7days or so.
If I stop the pump (soft power off PC) and then restart in quite short time, it also starts fine.

It looks like:
- alarm will likely show up if pump was off for quite some time and was not fully powered off (standby power) it later time
- it is not looking like pump mechanically fails to start, more looking like a bug in software/firmware/pump controller not starting up pump fast enough sometimes

Should I worry?