Siemens A33903 fault code meaning
Siemens / A33903
Series: G120-CU250S-2
Encoder 3: I2C-BUS fault occurred
converter
Meaning: Error operating the internal I2C Bus bus.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1586
Series: G130-G150
Encoder 3: Fault I2C-BUS occurred
converter
Meaning: Error operating the internal I2C Bus bus.
Possible causes
Source: SINAMICS G130_G150 P1927