MEGA 6/8/10/12 kW single-phase hybrid inverter — inverter fault
Beve 25 error code
The inverter's AC relay self-check failed.
Likely causes
- AC relay welded or stuck
- AC input voltage or frequency abnormal during the self-check
- Internal relay drive circuit fault
- Backfeed or wiring error on the AC input
Checks to run, in order
- 1Power-cycle the unit and observe whether the self-check passes
- 2Measure AC input voltage and frequency at the inverter terminals
- 3Check the AC input wiring for backfeed or a shared neutral error
Fixes
- Restart after correcting any AC input abnormality
- Return the unit to the repair centre if the relay check keeps failing
When to escalate
A repeated relay check failure is an internal relay fault and needs distributor 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 Beve 25 mean?
The inverter's AC relay self-check failed.
How do I fix Beve 25?
Restart after correcting any AC input abnormality Return the unit to the repair centre if the relay check keeps failing
When should I escalate Beve 25?
A repeated relay check failure is an internal relay fault and needs distributor service.
Can I reset Beve 25 myself?
Only after isolating the AC and DC sides and running the checks above. If Beve 25 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Beve 25?
Beve 25 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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