ActronAir LRE10013CS Indoor Control Assembly is the factory-fitted control assembly for the LRE-100CS UltraSlim ducted indoor unit, managing indoor fan operation, system control functions, and fault diagnostics for this compact low-profile indoor unit. A failed control assembly causes complete loss of LRE-100CS indoor unit operation — fit the 100% Genuine ActronAir LRE10013CS to restore factory performance. Isolate power at mains before replacement -- live work on electrical components is dangerous and must only be performed by a qualified technician.