User talk:2607:FB91:820D:433A:3DF6:EA3C:A3A1:423C

September 2023
Hello, I'm Magic Fizz. I wanted to let you know that one or more of your recent contributions&#32;to HVAC control system have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse or the Help desk. Thanks. Magic Fizz (talk) 19:47, 16 September 2023 (UTC)