IPV series (IPV-4K24U, IPV-6K48U, IPV-4K24U Pro, IPV-6K48U Pro, IPV-12K48U) — inverter fault code
Itel Energy 23 error code
The AC input and AC output wiring is reversed, or the AC wiring between parallel units is incorrect.
Likely causes
- Grid supply landed on the AC output terminals
- Load landed on the AC input terminals
- Incorrect AC wiring during a parallel installation
- Live/neutral reversed in one unit
Checks to run, in order
- 1Verify that the grid feed goes to AC input and the loads to AC output
- 2Check live and neutral at both terminal blocks
- 3For parallel systems, check the AC wiring and complete the parallel installation before restarting
Fixes
- Correct the input/output wiring
- Correct any live/neutral reversal
- Complete the parallel installation and restart the inverters
When to escalate
If the wiring is verified correct and code 23 remains, escalate to the distributor with photos of the input and output terminations.
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 Itel Energy 23 mean?
The AC input and AC output wiring is reversed, or the AC wiring between parallel units is incorrect.
How do I fix Itel Energy 23?
Correct the input/output wiring Correct any live/neutral reversal Complete the parallel installation and restart the inverters
When should I escalate Itel Energy 23?
If the wiring is verified correct and code 23 remains, escalate to the distributor with photos of the input and output terminations.
Can I reset Itel Energy 23 myself?
Only after isolating the AC and DC sides and running the checks above. If Itel Energy 23 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Itel Energy 23?
Itel Energy 23 is documented for IPV series (IPV-4K24U, IPV-6K48U, IPV-4K24U Pro, IPV-6K48U Pro, IPV-12K48U) — inverter fault code. Confirm the code on your own unit's display or manual before ordering parts.
More Itel Energy error codes
- Itel Energy 01Display code 01 covers two events: as a warning it signals output overload (flashing fault LED, two beeps per second); as a fault it signals DC bus over-voltage (solid fault LED, output switched off).
- Itel Energy 02Display code 02 covers two events: as a warning it signals the upper cooling fan is locked (three beeps); as a fault it signals DC bus under-voltage (solid fault LED, output switched off).
- Itel Energy 03Display code 03 covers two events: as a warning it signals the lower cooling fan is locked (three beeps); as a fault it signals that the DC bus soft-start sequence failed (solid fault LED).
- Itel Energy 04Grid voltage is above the upper limit of the inverter's grid window; warning only, with no buzzer alarm.
- Itel Energy 05In a parallel system the AC outputs of the units are not connected together, or a unit is running on a different phase.
- Itel Energy 06Remote shutdown is enabled, typically from the monitoring app over Wi-Fi, so the inverter is being held off remotely.
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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