66 · FC 301/302 · WARNING

For 66, model / series is FC 301/302; type is WARNING; brand is Danfoss; fault name is Heat sink temperature low, verified against its source on 2026-10-10.

Brand: Danfoss
Model / series: FC 301/302
Fault code: 66 verified
Fault name: Heat sink temperature low verified
Type: WARNING verified

Sourcefiles.danfoss.com

Verified2026-10-10

Review by2028-10-09

DatasetIndustrial VFD fault and alarm codes by brand

What the source says

WARNING 66, Heat sink temperature low

— files.danfoss.com, retrieved 2026-08-26

Source

files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf

Last verified against source: 2026-10-10. Due for re-check by 2028-10-09. This page as Markdown · OKF bundle · full dataset as JSON.