Dear JW,
We are sorry to hear of your experience. This is a very unusual situation and we want to work with you to ensure your satisfaction. We have reached out to you via the contact information we have on file. Please call us or email us back at your earliest convenience.
The unit has dual thermal protection to prevent overheating. This might cause the shut-off. As the manufacturer, we stand behind our products. Please don't hesitate to contact us at 855-855-8868 and our wonderful customer service representative will assist you for a return and repair or exchange