If your machine is still under warranty, contact Krups support before attempting any internal repairs. If out of warranty, Error 09 is usually a "repairable" fault that requires a relatively inexpensive replacement part rather than a whole new machine.
Espresso machines are sensitive to extreme cold. If your machine was stored in a garage or delivered in winter, the NTC sensor might be too cold to register a reading. Let the machine sit in a warm room for 4 to 6 hours before turning it back on. Advanced Hardware Inspection krups error code 09
Look for "scorched" marks or blown capacitors on the main PCB, which suggest a power surge damaged the temperature regulation circuit. How to Prevent Error 09 If your machine is still under warranty, contact