I had a clicking blend door 2 years ago, replaced under warranty, my new issue though is I seem to only intermittently be able to change the output temperature, sometimes it works, sometimes no-matter how low I set it it still comes out hot. Is this a blend door thing again? I'm hesitant this time because I haven't gotten any clicking, and sometimes it works. I can change output locations just fine still.

Anyone have any input? I searched quite a bit before posting, but couldn't come up with anything definitive.