1 · FC 301/302 · WARNING
For 1 · FC 301/302 · WARNING, brand is Danfoss; model / series is FC 301/302; fault code is 1; fault name is 10 Volts low; type is WARNING, verified against its source on 2026-09-01.
- Brand
- Danfoss
- Model / series
- FC 301/302
- Fault code
- 1 verified
- Fault name
- 10 Volts low verified
- Type
- WARNING verified
- Cause
- The control card voltage is less than 10 V from terminal 50. Remove some of the load from terminal 50, as the 10 V supply is overloaded. Maximum 15 mA or minimum 590 Ω. A short circuit in a connected potentiometer or incorrect wiring of the potentiometer can cause this condition. verified
- Corrective action
- • Remove the wiring from terminal 50. If the warning clears, the problem is with the wiring. If the warning does not clear, replace the control card. verified
What the source says
WARNING 1, 10 Volts low
— 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 control card voltage is less than 10 V from terminal 50. Remove some of the load from terminal 50, as the 10 V supply is overloaded. Maximum 15 mA or minimum 590 Ω. A short circuit in a connected potentiometer or incorrect wiring of the potentiometer can cause this condition.
Corrective action
• Remove the wiring from terminal 50. If the warning clears, the problem is with the wiring. If the warning does not clear, replace the control card.
— all from files.danfoss.com, retrieved 2026-09-01
Source
- files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf