Fisher&Paykel dishwasher

it was only used 7 months over the years, I haven't used it for a long time, good condition but needs hose replacement. I went to the distant country, I stayed there for long time.. I came back and I still couldn't use the machine. Shortly after starting the machine, it gives the E5 error code, I have added the pictures, you can look at them. I will be moving out of the house after a while, I want to sell it urgently, please only serious buyers contact me !