Ritech chuyên sửa chữa biến tần Mitsubishi A700, F700, E700, A500, E500, D700, S500, A200, Z100, Z200, Z300. V500 các lỗi như: OC: OVERCURENT
OV: OVERVOLTAGE
OH: OVER HEATING
UVT: Undervoltage protection
LU: LOW VOLTAGE
OL: OVER LOAD
EF: EXTERNAL FAULT
GF: GROUND FAULT
CE: COMMUNICATION EROR
PE: Parameter error
E6, E7: CPU error