Power Unit

What does F70 mean?

A fault has been detected within the drive's internal power unit hardware. This indicates a potential malfunction of power components such as the rectifier, DC bus capacitors, or inverter IGBTs.

• Internal fault within the drive's power stage (IGBTs, rectifiers).
• Overvoltage or undervoltage condition on DC bus.
• Short circuit detected within the drive's power components.
• Cooling system failure within the drive (fan failure).

Click steps to track your progress.

1. 1

   Cycle power to the drive by turning it off completely, waiting for all indicator lights to extinguish, and then turning it back on.

2. 2

   If the fault persists after cycling power, a failure of the drive's power unit is indicated, requiring further technical assessment.