Siemens alarm F30036: Power unit: Internal overtemperature
SINAMICS S120 drive fault · SINAMICS S120
What it means
The temperature inside the converter housing exceeded its permissible limit. It is the fault counterpart of warning A30030 and usually develops when internal cooling fails, the unit is overloaded, or ambient conditions are out of range. Acknowledge requires the interior temperature to drop 5 K below the limit.
Likely causes
- internal fan failure
- sustained overload
- excessive ambient/installation temperature
- obstructed ventilation slots
Need the part urgently?
Send us alarm F30036 with your machine details — typical RFQ turnaround is 24–48h.