Siemens SINAMICS V20 VFD
Siemens SINAMICS V20 VFD code F100: Watchdog reset
A software error has occurred within the drive, which forces the booth equipment to shut down immediately.
- Code
- F100
- Name
- Watchdog reset
- Controller
- Siemens SINAMICS V20 VFD
- Type
- Internal fault
- What it does
- Fault: the equipment trips and stops
- Risk
- YELLOW Booth plays by its own rules
- Reset
- Needs a manual reset
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated November 4, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- What the manual says to do, and the page it is on
- The 1 common cause listed for this code
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Siemens SINAMICS V20 VFD code F100 mean?
A software error has occurred within the drive, which forces the booth equipment to shut down immediately.
Is Siemens SINAMICS V20 VFD code F100 dangerous?
It is graded yellow: not hard, but a booth does it differently than the gear most techs know, so follow the checks in order.
How do I fix Siemens SINAMICS V20 VFD code F100?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
Other Siemens SINAMICS V20 VFD codes
A923 · Both JOG left and JOG right are requesteA930 · Cavitation protection warnA936 · PID autotuning activeA952 · Load monitoring warningF101 · Stack overflowF200 · Script errorF221 · PID feedback below minimum valueF222 · PID feedback above maximum valueF350 · Configuration vector for the converter fF395 · Acceptance test/confirmation pending