43 · FC 301/302 · ALARM
For 43 · FC 301/302 · ALARM, brand is Danfoss; model / series is FC 301/302; fault code is 43; fault name is Ext. supply; type is ALARM, verified against its source on 2026-09-01.
- Brand
- Danfoss
- Model / series
- FC 301/302
- Fault code
- 43 verified
- Fault name
- Ext. supply verified
- Type
- ALARM verified
- Cause
- VLT® Extended Relay Option MCB 113 is mounted without external 24 V DC. Either connect a 24 V DC external supply or specify that no external supply is used via parameter 14-80 Option Supplied by External 24VDC, [0] No. A change in parameter 14-80 Option Supplied by External 24VDC requires a power cycle. verified
What the source says
ALARM 43, Ext. supply
— 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
VLT® Extended Relay Option MCB 113 is mounted without external 24 V DC. Either connect a 24 V DC external supply or specify that no external supply is used via parameter 14-80 Option Supplied by External 24VDC, [0] No. A change in parameter 14-80 Option Supplied by External 24VDC requires a power cycle.
— all from files.danfoss.com, retrieved 2026-09-01
Source
- files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf