The manual suggests the cause is water not reaching the machine, for one of a number of reasons.
Think (alien concept to some) what other things could cause no water feed. Inlet valve failed, perhaps, Control board out put to inlet valve failed, perhaps (unlikely I admit but possible)
Inlet valve is relatively easy to replace.
Do a Google search for Indesit (not Indegist) spares.
Anon
June 2016