Siemens A504 fault code meaning
Siemens / A504
Series: V20
Converter overheat
converter
Meaning: The alarm threshold for the converter heatsink temperature, the alarm threshold for the chip junction temperature, or the permissible temperature change at the chip junction has been exceeded, causing the pulse frequency and/or output frequency to decrease (depending on the parameter settings in P0290). Note: r0037[0]: Heatsink temperature. r0037[1]: Chip junction temperature (including the heatsink).
Possible causes
Source: SINAMICS V20 Converter P419