indesit 1005 - A10 Fault Code?

After checking this fault code on the highway - it states it is open/short circuit infill valve triac??? when the machine is switched on - it starts up okay, but when it starts to (or trys to) fill with water, the appliance stops with the A10 flashing in the digital display.

Can anyone confirm whether a new infill valve is all that is required to rectify this fault and whether it is something that can be fitted by the layperson?