- Error code
- FS 101 – FS 106
- Category
- Measurement fault
- Manufacturer
- KACO
1What the error means
The device shut down due to unreliable internal measurements. Codes FS 101 to FS 106 refer to the same fault in different measuring circuits.
On the display or in the monitoring software it appears as FS 101 – FS 106.
2Possible causes
- Fault in a sensor or measuring circuit
- Discrepancy between the two independent safety measurements
- Damage from overvoltage
3What to do
- One restart with AC and DC switched off.
- If it returns, the measuring circuit needs to be checked in our lab — the inverter is not allowed to operate with an unreliable measurement.
Codes covered
This fault appears with the codes FS 101 – FS 106. The manufacturer documents them as a single fault — the number indicates the stage or the phase in which it was detected.
4Repair by Aineas
You send the inverter to our lab in Thessaloniki. We diagnose it, inform you of the fault and the cost, and the repair starts only after you approve it. Every inverter is tested under simulated operating conditions before delivery.