Re: F+P DD603 H Strange fault.
Whenever I have seen the pumps seized it has been because the outer plastic on the rotor has split causing the rotor to rust and expand.
If the elements are getting hot and the drawer is drawing about 1 amp when the draw is turned off but with power to it then it isn’t actually powering the element but drawing too much power through the printed resister, if this is the case then you have a blown surface mount diode on the PCB which may have been caused by the rotor failure.
Jem