I am sorry for the problem, I don't need the transformer seeing as it tried to spin. I just got another pump back for a similar problem and it was very simple. The pump plug was not fully connected to the driver board. Double check this before you send it. Open the driver, the manual shows how. Inside make sure the pump plug is clipped into the socket and not just resting on the socket. If that doesn't get it send it to me, I only need the motor and driver and not the transformer.
Tunze USA
305 Victor St
Austin, TX 78753