A new central heating system and a new fridge in the house has reintroduced me to the modern instruction manual. They are no better than they ever were. Written by people who have a complete knowledge of their products to the point at which they gloss over the important little steps that make the thing actually work.
Can I suggest that Worcester Bosch and John Lewis write their manuals and then watch someone try to follow the detail. I am pretty sure they will discover that they will have to intervene, to cover for that missed step.
The John Lewis fridge freezer included a sound scape, useful when tracking down that strange noise. Although I am not sure that wine goes BLUBB!