I took one of them off and took it outside and the temperature didn't change. What did happen though, was the display turned upside down and then wouldn't turn back.
Eventually it dawned on me to reset it, I took the batteries out and back in, and lo and behold, the temperature showed 25 degrees.
Has anyone else had this? obviously if the trvs are just going to freeze randomly the product is completely useless and will cost me a lot of money in heating.
I'm getting quite annoyed with this product and I can't believe I bought it based on a which? recommendation.
