IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED)
Felicity 71 error code
AC leakage current fault: leakage current to earth exceeded the safety limit.
Likely causes
- Degraded PV cable insulation
- Ground fault on the PV array or its cabling
- Water in a PV connector or junction box
- Missing or poor inverter PE connection
- Leakage from a damp AC circuit
Checks to run, in order
- 1Confirm the inverter PE terminal is bonded to the installation earth
- 2Check the PV side cable ground connection as the manual directs
- 3Measure PV insulation resistance to earth string by string
- 4Inspect connectors and junction boxes for water ingress
Fixes
- Repair or replace the damaged PV cabling
- Dry and reseal wet connectors
- Restore a solid PE bond, then restart 2-3 times
- If leakage persists, isolate the faulty string and arrange repair
When to escalate
If leakage current returns with a sound earth and dry array, escalate for insulation testing and inverter 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 71 mean?
AC leakage current fault: leakage current to earth exceeded the safety limit.
How do I fix Felicity 71?
Repair or replace the damaged PV cabling Dry and reseal wet connectors Restore a solid PE bond, then restart 2-3 times If leakage persists, isolate the faulty string and arrange repair
When should I escalate Felicity 71?
If leakage current returns with a sound earth and dry array, escalate for insulation testing and inverter inspection.
Can I reset Felicity 71 myself?
Only after isolating the AC and DC sides and running the checks above. If Felicity 71 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Felicity 71?
Felicity 71 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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