Hotpoint Aquarius washing machine WMF740 FAULT H20?

My washing machine has suddenly stopped washing midcycle.The display is showing H20.It seems to be calling for water to the soap dispenser but this only last 2-3 seconds and the water is not going in the drum presumably because not enough water has entered the drum to start the agitator?We have checked the hose,cleaned the soap dispenser and the screens on the inlet valve and the filter drain that is on the front which are all clear.Do you think it may be the inlet valve that requires replacing? Thank you