MEGA 6/8/10/12 kW single-phase hybrid inverter — inverter fault
Beve 23 error code
PV isolation resistance to earth is too low.
Likely causes
- Damaged PV cable or connector
- Water or moisture inside a connector or junction box
- Panel insulation failure to the mounting frame
- Long wet string with several low-resistance paths
Checks to run, in order
- 1Isolate the PV array and measure insulation resistance from PV+ and PV- to earth
- 2Inspect connectors and junction boxes for water ingress or damage
- 3Check panel frames and mounting for a path to earth
Fixes
- Repair or replace the damaged cable or connector
- Dry and reseal the enclosure, then re-test insulation resistance
- Reconnect only when the measured isolation is acceptable
When to escalate
If isolation stays low with the array isolated and dry, the distributor should help test the inverter's PV isolation detection.
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 Beve 23 mean?
PV isolation resistance to earth is too low.
How do I fix Beve 23?
Repair or replace the damaged cable or connector Dry and reseal the enclosure, then re-test insulation resistance Reconnect only when the measured isolation is acceptable
When should I escalate Beve 23?
If isolation stays low with the array isolated and dry, the distributor should help test the inverter's PV isolation detection.
Can I reset Beve 23 myself?
Only after isolating the AC and DC sides and running the checks above. If Beve 23 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Beve 23?
Beve 23 is documented for MEGA 6/8/10/12 kW single-phase hybrid inverter — inverter fault. Confirm the code on your own unit's display or manual before ordering parts.
More Beve error codes
- Beve 01Cooling fan is locked and not turning while the inverter is switched on.
- Beve 02Inverter temperature has exceeded its protection point.
- Beve 03Battery voltage is above the inverter's high battery cut-off.
- Beve 05Output short circuit detected on the inverter AC output.
- Beve 06Inverter output voltage is above the acceptable window; the manual's troubleshooting table puts this above 260 Vac.
- Beve 07Overload: the inverter has been running above its rating (102% in the manual's note) until the overload time expired.
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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