Assuming that the unit is plugged in and the plastic bag is in the proper position.........
Press firmly and equally on both sides of the cover (where the three raised ridges are on each side). The 2 micro switches that start the vacuum motor are located there and require firm pressure to operate properly.
Answers & Comments
My foodsaver v835 won't seal properly.Some spots seal and some don't.It has only been used a couple of times.
Wont seal when i press seal button