Dryer option not selectable on Hoover wash/dry WDYN 9646G-80?

I have a Hoover sensordry washer/dryer, model no WDYN 9646G-80.
I can select all of the different wash cycles but I cannot now select the dryer only cycles. This has happened since I had a new combi gas boiler fitted in the kitchen and the plumbers moved the washing machine out to gain access to the drainage point.

Any advice greatly appreciated.
Thanks