Candy DFI 85 S problem

Candy DFI 85 S problem (Serial no. 32208126)

Can anyone help with this one please? My dishwasher stopped mid-cycle (55º) with what looks like a normal water level, a continual beeping and indicator lights 1, 3, 5 & 6 flashing. Since then I’ve emptied it by draining from the outlet pipe and have no idea where to go next. I can’t find an explanation of the error code anywhere and nor have I been able to re-set it to attempt to re-create the fault condition. I’ve tried completely disconnecting from the power supply but the condition persists when I re-connect. From a visual inspection there doesn’t appear to be any signs of flooding, blockage or component burn out. Anyone have any ideas where I should be looking?

Thanks in advance.