Siemens F37004 fault code meaning
Siemens / F37004
Series: G120-CU250S-2, S120-S150
HF damper: Heatsink overheat
converter
Meaning: The heatsink temperature in the HF damper has exceeded the permissible limit. - Insufficient ventilation or fan fault. - Overload. - Ambient temperature too high.
Possible causes
Source: SINAMICS G120, control unit CU250S-2 P1603; SINAMICS S120_S150 P3199