If you have similar questions, please read this thread.
UNI Pro I keep receiving a shorted message. What does it mean?
Please install a brand new vape cartridge to have a try.
Or unscrew the vape cartridge, hit the fire button.If the Yocan UNI Pro battery still occurs short-circuit error, please try to use a q-tip with Isopyopyl Alcohol to clean the contact point inside the chamber.Then have a try hit the fire button.
If the battery inside occurs shorted, please contact our after-sale team at email@example.com