A: The software itself works offline and does not require an internet connection to function. An internet connection is only needed to download upgrade versions from the Carrier website.
When a digital thermostat or control board flashes a specific fault code, open the TruTech app and input the model number and the displayed error code. The app will bypass generic descriptions and present a targeted flow chart. It details what to measure with your multimeter, which pins to check, and what voltage or resistance thresholds indicate a failed component. 2. Utilizing the Carlyle Compressor Module carrier tru tech download