My Vaillant ecoTEC Pro 28 died yesterday and it showed a fault code f73. Tracing the code on the manual I found a few lines about it, one of them says the water pressure sensor but nothing about how to take it out or change it. I know loads of you guys out there know how to do it. Tell me please, please, please.... Thanks.

Vincent, January 2013

u need to drain the boiler for the central heating water its in the instruction manual. then by the looks of it is just a simple pull clip change. as long as u drain the boiler turn of the power replace like for like and refil the boiler u wont go wrong

kash, January 2013