Worked on stabilizing the Coolix IRac fan-only mode within the arendst/Tasmota repository, focusing on firmware reliability for embedded systems. Addressed a sequencing issue in IRac.cpp by carefully reordering the mode, temperature, and fan-speed function calls, which resolved incorrect fan speed assignments without introducing new features. This targeted bug fix improved the consistency of fan control, reducing potential user issues. The solution was implemented as a minimal, well-scoped patch using C++ and involved thorough code review and Git-based change management. The work demonstrated attention to detail in embedded firmware development and protocol handling, emphasizing reliability and maintainability in device control.