91 · FC 301/302 · ALARM
For 91, model / series is FC 301/302; type is ALARM; brand is Danfoss; fault name is Analog input 54 wrong settings; corrective action is Set switch S202 in position OFF (voltage input) when a KTY sensor is connected to analog input terminal 54, verified against its source on 2026-10-10.
- Brand
- Danfoss
- Model / series
- FC 301/302
- Fault code
- 91 verified
- Fault name
- Analog input 54 wrong settings verified
- Type
- ALARM verified
- Corrective action
- Set switch S202 in position OFF (voltage input) when a KTY sensor is connected to analog input terminal 54. verified
What the source says
ALARM 91, Analog input 54 wrong settings
— 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.
Corrective action
Set switch S202 in position OFF (voltage input) when a KTY sensor is connected to analog input terminal 54.
— all from files.danfoss.com, retrieved 2026-09-01
Source
- files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf