What it means
Low insulation fault (level 1)
Cause: Insulation resistance ≤ 1000 Ω/V.
How to fix it
- Send faults to EMS.
- Recovers when > 1100 Ω/V.
Source: fls-es232lc-g-2-fls-es232lc-s-user-guide-en.pdf
Felicity ESS error 0x10C1
Low insulation fault (level 1)
Warning — a protection warning — the ESS unit keeps running, but deal with the cause before it escalates.
Frequently asked questions
What does error 0x10C1 mean on a Felicity ESS?
0x10C1 means: Low insulation fault (level 1). Insulation resistance ≤ 1000 Ω/V.
Is error 0x10C1 a fault or a warning?
0x10C1 is a warning: the unit keeps running. Fix the underlying condition before it escalates.
How do I clear or fix error 0x10C1?
Send faults to EMS. Recovers when > 1100 Ω/V.
Related error codes
Other codes on the FLS-ES232LC-S
- 0x10A1WarningCell voltage accumulation overvoltage alarm in battery cluster (level 1).
- 0x10A2FaultCell voltage accumulation overvoltage alarm in battery cluster (level 2).
- 0x10A3CriticalCell voltage accumulation overvoltage alarm in battery cluster (level 3).
- 0x10B1WarningCell voltage accumulation undervoltage alarm in battery cluster (level 1).
- 0x10B2FaultCell voltage accumulation undervoltage alarm in battery cluster (level 2).
- 0x10B3CriticalCell voltage accumulation undervoltage alarm in battery cluster (level 3).
Prefer the full written guide? Read the complete Felicity inverter error-code guide
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.