104 · FC 301/302 · WARNING/ALARM
For 104, model / series is FC 301/302; type is WARNING/ALARM; brand is Danfoss; fault name is Mixing fan fault; corrective action is • Cycle power to the frequency converter to determine if the warning/alarm returns, verified against its source on 2026-10-10.
- Brand
- Danfoss
- Model / series
- FC 301/302
- Fault code
- 104 verified
- Fault name
- Mixing fan fault verified
- Type
- WARNING/ALARM verified
- Cause
- The fan is not operating. The fan monitor checks that the fan is spinning at power-up or whenever the mixing fan is turned on. The mixing-fan fault can be configured as a warning or an alarm trip in parameter 14-53 Fan Monitor. verified
- Corrective action
- • Cycle power to the frequency converter to determine if the warning/alarm returns. verified
What the source says
WARNING/ALARM 104, Mixing fan fault
— 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 fan is not operating. The fan monitor checks that the fan is spinning at power-up or whenever the mixing fan is turned on. The mixing-fan fault can be configured as a warning or an alarm trip in parameter 14-53 Fan Monitor.
Corrective action
• Cycle power to the frequency converter to determine if the warning/alarm returns.
— all from files.danfoss.com, retrieved 2026-09-01
Source
- files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf