Indesit IDL700UK – Fill problem

Hi Folks

Went to the above D/Wash today and found not filling.. main inlet solenoid test ok and buzzes when activated.. there is also somthing that looks like another soleniod or pressure sensor in line with inlet valve.. Anybody tell me what it is and what does it do?

Think this might be the problem but not enough time to disconect hose to tell if main valve opening and this is blocking the inlet water.. even if it was wasn’t sure if it was protection and why it was stopping water coming in and how to test it.

No sign of water in base by the way and fill time out fault lights up..

Thanks