Stab in the dark. This proline looks like it is a badged Haier machine also sold as a Baumatic ( no doubt at an inflated price!) but with Indesit undertones too if that makes any sense but with a different pcb. Lights 1234 THINK it has something to do with a flooded base tripped float- check out d/w fault codes for Haier d/w`s 8 lights and 6 light versions on this site. This is a guess of course, sorry if I`m wrong.