Fault codeF30025
The power unit has detected chip overtemperature because the permissible load duty cycle was not maintained. The manual's first action is: “Acknowledge: IMMEDIATELY”
- Model
- Siemens CU240B/E-2
- Display shows
- Power unit: Chip overtemperature (F30025)
- Type
- Fault code
- Source
- Manual p. 714
What F30025 means
Power unit: Chip overtemperature p. 714
Common causes
- Reaction: OFF2 p. 714
- Cause: p. 714
- - The permissible load duty cycle was not maintained. p. 714
- - insufficient cooling, fan failure. p. 714
- - overload. p. 714
- - ambient temperature too high. p. 714
- - pulse frequency too high. p. 714
- Fault value (r0949): p. 714
- Temperature difference between the heat sink and chip [1 Bit = 0.01 °C]. p. 714
- Remedy: p. 714
- - check whether the fan is running. p. 714
- - check the fan elements. p. 714
- - check whether the ambient temperature is in the permissible range. p. 714
- - check the motor load. p. 714
- - reduce the pulse frequency if this is higher than the rated pulse frequency. p. 714
- Notice: p. 714
- See also: r0037 (Power unit temperatures) p. 714
What to do
- Acknowledge: IMMEDIATELY p. 714
- - Chip temperature of the semiconductor has exceeded the permissible limit value. p. 714
- - adapt the load duty cycle. p. 714
- This fault can only be acknowledged after this alarm threshold for alarm A05001 has been undershot. p. 714
If F30025 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.
This page summarises what the manufacturer’s manual says about F30025; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.