IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED)
Felicity 05 error code
PV over-current fault: the PV input current exceeded the inverter's PV input limit.
Likely causes
- PV array oversized for the inverter's maximum input current
- Too many parallel strings for the PV input
- Reverse polarity or a shorted string causing excess current
- Fault in the PV input stage
Checks to run, in order
- 1Compare the array Isc/Imp with the inverter's maximum PV input current
- 2Clamp each string and compare the readings for a faulty string
- 3Check PV polarity and look for a shorted string
- 4Inspect PV connectors for damage or water ingress
Fixes
- Disconnect excess strings or rewire the array within the input current limit
- Clear the string fault, then restart the inverter 2-3 times as the manual directs
- If the fault returns with a correctly sized array, book service
When to escalate
If code 05 returns after the array has been corrected and the unit restarted 2-3 times, ask the distributor to inspect the PV input stage.
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 05 mean?
PV over-current fault: the PV input current exceeded the inverter's PV input limit.
How do I fix Felicity 05?
Disconnect excess strings or rewire the array within the input current limit Clear the string fault, then restart the inverter 2-3 times as the manual directs If the fault returns with a correctly sized array, book service
When should I escalate Felicity 05?
If code 05 returns after the array has been corrected and the unit restarted 2-3 times, ask the distributor to inspect the PV input stage.
Can I reset Felicity 05 myself?
Only after isolating the AC and DC sides and running the checks above. If Felicity 05 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Felicity 05?
Felicity 05 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 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.
- Felicity 22Battery under-voltage alarm or battery SOC low alarm: battery voltage is too low, or the BMS reports SOC too low, and the battery should be charged.
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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