The inverter heat sink temperature is below the permissible minimum, indicating the ambient temperature is too low or the sensor evaluation is defective. The manual's first action is: “- the power unit is being operated at an ambient temperature that lies below the permissible range. - the temperature sensor evaluation is defective.”
- Model
- Siemens G120C
- Display shows
- Power unit: undertemperature inverter heat sink (F30068)
- Type
- Fault code
- Source
- Manual p. 740
What F30068 means
Power unit: undertemperature inverter heat sink p. 740
Common causes
- The actual inverter heat sink temperature is below the permissible minimum value. p. 740
What to do
- - the power unit is being operated at an ambient temperature that lies below the permissible range. - the temperature sensor evaluation is defective. p. 740
Before you service the product, read the safety instructions in the manual p. 4.
If F30068 is still not resolved
This page summarises what the manufacturer’s manual says about F30068; 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.