Yaskawa GA500 AC Drive
Yaskawa GA500 AC Drive code Uv1: DC Bus Undervoltage
The DC bus voltage dropped below the detection level, causing the drive to shut down the equipment.
- Code
- Uv1
- Name
- DC Bus Undervoltage
- Controller
- Yaskawa GA500 AC Drive
- Type
- Low voltage
- 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 6 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 GA500 AC Drive code Uv1 mean?
The DC bus voltage dropped below the detection level, causing the drive to shut down the equipment.
Is Yaskawa GA500 AC Drive code Uv1 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 GA500 AC Drive code Uv1?
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 Yaskawa GA500 AC Drive codes
TiM · Keypad Time Not SetUL3 · Undertorque Detection 1UL4 · Undertorque Detection 2UL5 · Mechanical Weakening Detection 2Uv2 · Control Power UndervoltageUv3 · Soft Charge Answerback FaultbAT · Keypad Battery Low VoltagebCE · Bluetooth Communication FaultbUS · Option Communication ErrorboL · BrakingTransistor Overload Fault