Siemens Drive Fault Code 7902 Jun 2026

This fault is usually —meaning the drive will not restart automatically. It requires a manual reset after the root cause is fixed.

However, a critical nuance often missed: In some Siemens drive firmware versions, can also indicate a wire break or short circuit in the temperature sensor feedback circuit , rather than actual overheating. This dual nature makes it a tricky fault to diagnose without systematic testing.

Manually input the parameters exactly as written on the motor's rating plate: Rated Motor Voltage p305: Rated Motor Current p307: Rated Motor Power p308: Rated Motor CosPhi p311: Rated Motor Speed 4. Optimize the Motor

This draft provides a general overview and might need adjustments based on the specific requirements or details of the Siemens drive model you're working with.

This comprehensive guide breaks down why this fault happens across major Siemens SINAMICS variable frequency drives (VFDs)—including the —and provides an actionable, step-by-step troubleshooting protocol. Anatomy of Fault F07902

: Motor nameplate parameters (current, power, speed) may be incorrectly entered in the drive configuration.