39 · FC 301/302 · ALARM
For 39 · FC 301/302 · ALARM, brand is Danfoss; model / series is FC 301/302; fault code is 39; fault name is Heat sink sensor; type is ALARM, verified against its source on 2026-09-01.
- Brand
- Danfoss
- Model / series
- FC 301/302
- Fault code
- 39 verified
- Fault name
- Heat sink sensor verified
- Type
- ALARM verified
- Cause
- No feedback from the heat sink temperature sensor. The signal from the IGBT thermal sensor is not available on the power card. The problem could be on the power card, on the gatedrive card, or the ribbon cable between the power card and gatedrive card. verified
What the source says
ALARM 39, Heat sink sensor
— files.danfoss.com, retrieved 2026-09-01
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Cause
No feedback from the heat sink temperature sensor. The signal from the IGBT thermal sensor is not available on the power card. The problem could be on the power card, on the gatedrive card, or the ribbon cable between the power card and gatedrive card.
— all from files.danfoss.com, retrieved 2026-09-01
Source
- files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf