IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED)
Felicity 27 error code
Battery over-current fault: current into or out of the battery exceeded the inverter's protection limit.
Likely causes
- Load surge drawing more current than the battery can supply
- Battery bank too small for the inverter's output
- Charge current set too high for the pack
- A short or near-short on the battery circuit
Checks to run, in order
- 1Clamp the battery cable during charge and discharge and compare with the battery's current limits
- 2Check the charge current setting against the battery datasheet
- 3Review the connected load and any large motor or compressor starting
- 4Inspect battery cables and terminals for a short or loose connection
Fixes
- Reduce the load and stagger large appliances
- Lower the charge current to the battery's rating
- Restart 2-3 times and retest under load
When to escalate
If the over-current trips with the load and charge current within the battery rating, escalate for inverter and battery inspection.
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 27 mean?
Battery over-current fault: current into or out of the battery exceeded the inverter's protection limit.
How do I fix Felicity 27?
Reduce the load and stagger large appliances Lower the charge current to the battery's rating Restart 2-3 times and retest under load
When should I escalate Felicity 27?
If the over-current trips with the load and charge current within the battery rating, escalate for inverter and battery inspection.
Can I reset Felicity 27 myself?
Only after isolating the AC and DC sides and running the checks above. If Felicity 27 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Felicity 27?
Felicity 27 is documented for IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED). 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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