IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED)
Felicity 52 error code
AC voltage DC-component fault: a DC offset was detected on the inverter's AC output voltage.
Likely causes
- Output-stage fault producing an asymmetrical sine wave
- DC load or a half-wave load on the backup output
- Measurement-circuit fault
- Damage after a surge
Checks to run, in order
- 1Measure the AC output with a true-RMS meter and check for a DC offset
- 2Disconnect DC or half-wave loads and retest
- 3Restart 2-3 times
- 4Inspect the output terminals and cabling
Fixes
- Remove any DC or half-wave load from the backup output
- Restart and re-measure the output
- If the DC component remains with no load, book service
When to escalate
A DC offset on the output with no DC load is an internal inverter fault - escalate to the distributor.
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 52 mean?
AC voltage DC-component fault: a DC offset was detected on the inverter's AC output voltage.
How do I fix Felicity 52?
Remove any DC or half-wave load from the backup output Restart and re-measure the output If the DC component remains with no load, book service
When should I escalate Felicity 52?
A DC offset on the output with no DC load is an internal inverter fault - escalate to the distributor.
Can I reset Felicity 52 myself?
Only after isolating the AC and DC sides and running the checks above. If Felicity 52 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Felicity 52?
Felicity 52 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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