I am still tracking down the issue with my Vetus bow thruster. When I press the ON switch the second time (normal operation, kind of a child lock) the light turns red and I get 2 beeps, short pause then 3 beeps. Long pause and it repeats. Tried it a few times and always the same. Someone designed it to do that when a certain error was detected yet I cannot find anything on the Vetus website that talks about beep error codes. I assume there are several sequences of beeps and pauses and each relates to a specific error. So why not publish it?