Press and hold the+&- button at the same time for 2 seconds, the curent presure setting will be displayed. Whilst the pressre is displayed, press and hold both buttons again for 2 seconds, the pressure setting will start to flash, press the - button once to lower the setting, once you have done this turn the power off for 2 seconds and then turn it back on, press and hold the two buttons for 2 seconds to confirm that the change has taken place, turn power off then on and try turning up your flow controller. If you still hve problems repeat the above opperation, but only decrease the amount by one each time.