Hi Guy's
On my first job today that needed the back pack, filled it up trundled along to the windows, switched the backpack on and nothing, dead, :

I knew the battery was fully charged so checked the connections and they were all ok. so chucked it back into the car and waited until I got home to check it out.
Once home I got the destruction manual out

one thing it said, was to disconnect the pump from the pcb and connect the pump directly to the battery, so I did this and the pump worked, Aha I thought the pcb is
NFG?? so connected everything back up, and while the pcb was in my hand I pressed the switch and it was sticking a bit, so kept pressing it until it was free and all worked well

.
Now I have only used it a couple of dozen times, so I don't expect to be messing around with it just yet, I only got it just a week before christmas so its not as if its been abused in any way.
2 Questions for you?
1. has anyone had a similar problem as the above.
2. so I have a spare does anyone know what size the fuse is? the one in mine has just an E printed on it and not its size, I can work it out but don't want to invalidate my warranty if I have to relace a fuse, and use the wrong size up, even if its 1 amp above the correct rating can invalidate it.