Fault handling method and device of air conditioning system

The invention discloses a fault handling method and a fault handling device of an air conditioning system. The fault handling method of the air conditioning system comprises the following steps the air conditioning system detects a working state per se; when detecting a fault per se, the air conditioning system transmits fault information to a data processing platform, wherein the data processing platform is used for querying fault resolution information corresponding to the fault information and transmitting the fault resolution information to the air conditioning system, and fault resolution information corresponding to different pieces of fault information is stored in the data processing platform; and the air conditioning system receives the fault resolution information from the data processing platform. According to the fault handling method and the fault handling device, the problem that the air conditioning system cannot automatically resolve the fault in the prior art is solved, and further the effect of improving the fault removal efficiency of the air conditioning system is achieved.