Just replaced a Zanussi washer a couple of weeks ago, lasted 8 years.
Best thing I can think of for longevity is our Oreck vac's had them over 20 years before I replaced one of them.
" On the back of one sensor are 2 pins with a jumper on them, from reading the manual removing the jumper makes the sensors less sensitive (not what I want). "
Yellow 'C' type above the Facom sign, still see the window foil if you look closely.
https://www.google.co.uk/maps/@53.6803264,-1.5031351,3a,19.9y,80.64h,92.88t/data=!3m6!1e1!3m4!1s_PUFKlWV1psMff69i1-ugQ!2e0!7i13312!8i6656