Plumbing Questions? Ask a Plumber and Get Answers ASAP.
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.
Sounds like you have a faulty sensor in the touchless flush mechanism. When you say it flushes by itself do you mean the fill valve turns on (water runs into the tank)? Or does the toilet actually flush (water down the drain)?