The inverters Victron Energy are one of the most reliable in the world, but even they sometimes require repairs. During installation, we faced with a factory defect which we removed on the spot without having to return the equipment to the manufacturer. The problem consisted of a lack of voltage at AC-2 output (non-critical load), two minutes after switching on the inverter and when there was voltage in the outside network. The reason was a bad contact in a control connector to a relay. en.nencom.com