How to Change the Blower Speed on an 820TB Furnace with a HK42FZ112 NFC Board
This article covers how to change the blower speed on furnaces equipped with the new NFC board HK42FZ112. After reading,…
Day: September 29, 2025
Missing Serial Numbers on Infinity/Evolution User Interfaces
Have you ever noticed that (inside the software) some User Interfaces (UI) have serial numbers listed, and some don’t? Why…