IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED); warning list uses 86 for fan 1 failed alarm
Felicity 86 error code
System parameters change (solid LED): grid or battery settings were changed and the system restarted after about 20 ms; in the warning list the same number is fan 1 failure (flashing LED).
Likely causes
- A grid or battery setting was changed deliberately
- Battery profile or BMS protocol change
- Firmware update that rewrote parameters
- Fan 1 obstructed, disconnected or failed (warning variant)
Checks to run, in order
- 1Note whether the fault LED is solid (fault) or flashing (warning)
- 2If solid, review recent settings changes and confirm they were intended
- 3If flashing, check that fan 1 runs and is free of dust or obstruction
- 4Check the fan connector if accessible
Fixes
- For the solid notice, confirm the settings and continue if the change was intended
- For the warning, clean or replace fan 1
- Restart and confirm the code clears
When to escalate
If fan 1 does not run after cleaning and reseating its connector, escalate for fan service before the inverter overheats.
Fix it with the right tools
Check the system around the fault before replacing parts: load, battery bank, PV string and commissioning settings. If you need a second opinion, send the code and your inverter model to our team.
Before you open the inverter
- Isolate both the AC and DC sides, then confirm the display is dead before touching terminals.
- Use insulated tools and one hand where possible. DC arcs do not self-extinguish like AC.
- If you see burnt terminals, swollen cells, leaking electrolyte or a burning smell, stop and escalate instead of resetting the fault.
Questions installers ask
What does Felicity 86 mean?
System parameters change (solid LED): grid or battery settings were changed and the system restarted after about 20 ms; in the warning list the same number is fan 1 failure (flashing LED).
How do I fix Felicity 86?
For the solid notice, confirm the settings and continue if the change was intended For the warning, clean or replace fan 1 Restart and confirm the code clears
When should I escalate Felicity 86?
If fan 1 does not run after cleaning and reseating its connector, escalate for fan service before the inverter overheats.
Can I reset Felicity 86 myself?
Only after isolating the AC and DC sides and running the checks above. If Felicity 86 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Felicity 86?
Felicity 86 is documented for IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED); warning list uses 86 for fan 1 failed alarm. Confirm the code on your own unit's display or manual before ordering parts.
More Felicity error codes
- Felicity 04Low cell voltage / over-discharge protection.
- Felicity 05PV over-current fault: the PV input current exceeded the inverter's PV input limit.
- Felicity 18PV short-circuit fault on the PV input; in the warning list the same number means battery under-voltage alarm.
- Felicity 19Battery open-circuit alarm: the inverter no longer detects a battery on its terminals.
- Felicity 20Battery SOC low alarm: the battery's state of charge has fallen to the low-SOC warning threshold.
- Felicity 21BMS communication alarm: abnormal communication between battery and inverter in non-SOC mode.
Guidance reviewed 17 October 2026 by the Mishka Energy installer team. Error codes vary by brand, model family and firmware; confirm against the manufacturer manual.
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