I'm having a few problems with mine, You would think that once you have set up the pressure and flow settings they would remain constant, this is not the case.
I had initial problems with too much pressure, turned it down and it worked fine, today had to turn it up again, same hose reel, same amount of hose out.
I didn't realise that the pressure settings are in letters not numbers, you have to keep pressing the plus and minus buttons together until you have letters in the display, then press plus until you have the pressure you need. Pressure on E and flow on 1 worked fine today, but will it tomorrow?