Allen-Bradley PowerFlex 4M VFD
Allen-Bradley PowerFlex 4M VFD code F100: F100 Parameter Checksum
The calculated parameter checksum does not match the board checksum, which stops the drive from operating.
- Code
- F100
- Name
- F100 Parameter Checksum
- Controller
- Allen-Bradley PowerFlex 4M VFD
- Type
- General 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 July 22, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- Which manufacturer manual it comes from, linked
- The 4 common causes 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 Allen-Bradley PowerFlex 4M VFD code F100 mean?
The calculated parameter checksum does not match the board checksum, which stops the drive from operating.
Is Allen-Bradley PowerFlex 4M 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 Allen-Bradley PowerFlex 4M 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 Allen-Bradley PowerFlex 4M VFD codes
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