Based on the troubleshooting section of the BRC4C160 manual, here are the top three complaints:
The BRC4C160 is a wired remote controller commonly paired with Daikin split systems, ducted units, and SkyAir commercial systems. Unlike a standard IR remote, this unit wires directly into the indoor unit, meaning you never lose it behind the couch, and it provides more diagnostic feedback. Daikin Brc4c160 Manual
Many users ignore the manual and rely on intuition. However, the BRC4C160 has secondary functions (like programming timers or changing Celsius to Fahrenheit) that are not obvious from the front panel. The official manual provides: Based on the troubleshooting section of the BRC4C160