Code H66 [2021] — Yaskawa Error

Press the keypad buttons to navigate to U2 (Fault Trace) parameters. Important values to note:

For further technical details and official documentation, you can visit the Yaskawa Solution Center to access specific drive manuals and FAQs. service centers in your area to help resolve this issue? AI responses may include mistakes. Learn more Yaskawa Error Code H66 - Google Colab yaskawa error code h66

: Use a multimeter to confirm that both safety channels are receiving the correct voltage signal (typically 24V DC). If only one channel is active, the drive will display a fault. Review Fault History Press the keypad buttons to navigate to U2

: The first step is to cycle the main power and wait for the DC bus to fully discharge (usually indicated by the "Charge" LED turning off). This can clear transient logic glitches caused by momentary power dips. Inspect Physical Connections AI responses may include mistakes