29 · FC 301/302 · ALARM
For 29 · FC 301/302 · ALARM, brand is Danfoss; model / series is FC 301/302; fault code is 29; fault name is Heat Sink temp; type is ALARM, verified against its source on 2026-09-01.
- Brand
- Danfoss
- Model / series
- FC 301/302
- Fault code
- 29 verified
- Fault name
- Heat Sink temp verified
- Type
- ALARM verified
- Cause
- The maximum temperature of the heat sink is exceeded. The temperature fault is not reset until the temperature drops below a defined heat sink temperature. The trip and reset points are different based on the frequency converter power size. verified
- Corrective action
- Check for the following conditions: • The ambient temperature is too high. • The motor cables are too long. • Incorrect airflow clearance above and below the frequency converter. • Blocked airflow around the frequency converter. • Damaged heat sink fan. • Dirty heat sink. verified
What the source says
ALARM 29, Heat Sink temp
— files.danfoss.com, retrieved 2026-09-01
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
Cause
The maximum temperature of the heat sink is exceeded. The temperature fault is not reset until the temperature drops below a defined heat sink temperature. The trip and reset points are different based on the frequency converter power size.
Corrective action
Check for the following conditions: • The ambient temperature is too high. • The motor cables are too long. • Incorrect airflow clearance above and below the frequency converter. • Blocked airflow around the frequency converter. • Damaged heat sink fan. • Dirty heat sink.
— all from files.danfoss.com, retrieved 2026-09-01
Source
- files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf