33

Inrush fault

Danfoss · VLT HVAC-FC 102 Frequency Converter

What does 33 mean?

Too many power-ups have occurred within a short time period, leading to excessive inrush current events. This frequent power cycling prevents the unit from dissipating heat and can stress internal components, potentially shortening the drive's lifespan.

Source: Danfoss VLT HVAC-FC 102 Frequency Converter
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