46

Power card supply out of range

Danfoss · VLT HVAC Drive High Power

What does 46 mean?

One or more of the internal power supplies (24V, 5V, ±18V) generated by the switch-mode power supply (SMPS) on the power card are operating outside their acceptable voltage range. This indicates an issue with the power card's internal power regulation, which can affect the functionality of other components and lead to instability or failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Consider replacing the power card if the supplies remain out of range.

Source: Danfoss VLT HVAC Drive High Power
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