When your Titan 3 base displays the "ERR" message, this is normally due to the connection of the barrel to the base. If the wand is not properly connected to the barrel, it will give an error message. To prevent this problem, please make sure you are pushing the barrel all the way into the base; one indicator is if you hear a "click" when you connect the two parts.

Please try all the barrels to determine if the base or the barrels are not functioning correctly.