Yaskawa V1000 VFD
Yaskawa V1000 VFD code bUS: bUS Option Communication Error
The drive lost its option card communication connection after establishing it, which stops the equipment.
- Code
- bUS
- Name
- bUS Option Communication Error
- Controller
- Yaskawa V1000 VFD
- Type
- Communication
- 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 5 common causes listed for this code
- The step by step check for this problem, one check at a time
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Yaskawa V1000 VFD code bUS mean?
The drive lost its option card communication connection after establishing it, which stops the equipment.
Is Yaskawa V1000 VFD code bUS 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 Yaskawa V1000 VFD code bUS?
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.