IVGM5-8K LP2G1 hybrid inverters (warning code list, flashing fault LED)
Felicity 38 error code
Grid reverse-sequence alarm: the phase order at the grid input is reversed.
Likely causes
- Grid phases landed in the wrong order
- Wiring changed at the main distribution board
- Phase order altered by a generator or changeover switch
- One phase lost, making the sequence read incorrectly
Checks to run, in order
- 1Measure the phase sequence at the inverter grid terminals
- 2Measure all phase-to-phase and phase-to-neutral voltages
- 3Check the phase order at the main board and changeover switch
- 4Compare with the installation drawing
Fixes
- Swap two phases to correct the sequence
- Restore any missing phase or loose connection
- Restart and confirm the inverter synchronises
When to escalate
If the phase order is correct at the terminals and code 38 persists, escalate for input-board service.
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 38 mean?
Grid reverse-sequence alarm: the phase order at the grid input is reversed.
How do I fix Felicity 38?
Swap two phases to correct the sequence Restore any missing phase or loose connection Restart and confirm the inverter synchronises
When should I escalate Felicity 38?
If the phase order is correct at the terminals and code 38 persists, escalate for input-board service.
Can I reset Felicity 38 myself?
Only after isolating the AC and DC sides and running the checks above. If Felicity 38 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Felicity 38?
Felicity 38 is documented for IVGM5-8K LP2G1 hybrid inverters (warning code list, flashing 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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