How to properly start up a Schenker Watermaker

[@francismontocchio9910]

Hi! Thanks for your great videos! I have the same water maker as you and I’ve spent the last hour trying to troubleshoot. When I switch on (on/off button) it beeps then after a few seconds I get a long beep and both buttons start flashing. The pump motors don’t start either. Any idea what that could be? Thanks for your help.