Example: G503DHV-80DTYG
 
⑴ The first G is blank and without letters, which indicates the purpose, no need to mark the air conditioner, K refers to the cold area; ⑵ The first G refers to the working fluid type of Guangzhou Hitachi compressor, G-R407C, E-R410A, J-R134a; ⑶50s is the specification code of Guangzhou Hitachi compressor, rated output power (HP)*10; ⑷3 is the design serial number of Guangzhou Hitachi compressor, which is arranged in the sequence of 0.1.2.3.1... ⑸D means serial number, D-&160; ⑹H represents the installation type of Guangzhou Hitachi compressor, H-refers to vertical type, L-only horizontal type; ⑺V represents the category of Guangzhou Hitachi compressor, V- represents AC inverter compressor, D- represents DC inverter compressor, the rest are not marked; ⑻80 is the nominal working volume of Guangzhou Hitachi compressor, displacement per revolution of the compressor, unit: cm3/rev; ⑼D is the power supply of Guangzhou Hitachi compressor, A: 200V, 3~50Hz; 200-220v, 3~60Hz; B: 220V, 3-50/60Hz; C: 380V, 3~50H, 380V-400V, 3-60Hz; D: 380-415V, 3~50Hz 440v, 3~60Hz; ⑽T is used for Guangzhou Hitachi compressor, T-rail, B-bus; ⑾Y represents other specifications of Guangzhou Hitachi compressors, the standard is unmarked, and Y- is connected by a pipe and an exhaust pipe; ⑿G is the mark of origin, G- refers to Guangzhou, (marked when needed).