MEGA 6/8/10/12 kW single-phase hybrid inverter — inverter fault
Beve 99 error code
Other fault: an internal fault that the firmware does not map to a specific code.
Likely causes
- An internal fault condition not covered by the listed codes
- A transient condition that has already cleared
Checks to run, in order
- 1Read the History Error page for the code and timestamp
- 2Record what the system was doing when the fault appeared
- 3Restart the unit and see whether the code returns
Fixes
- Restart once and observe
- Capture the history entry and conditions for the distributor
- If the code returns, return the unit to the repair centre
When to escalate
Report code 99 with the history log and the conditions at the time so the distributor can match it to a service bulletin.
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 99 mean?
Other fault: an internal fault that the firmware does not map to a specific code.
How do I fix Beve 99?
Restart once and observe Capture the history entry and conditions for the distributor If the code returns, return the unit to the repair centre
When should I escalate Beve 99?
Report code 99 with the history log and the conditions at the time so the distributor can match it to a service bulletin.
Can I reset Beve 99 myself?
Only after isolating the AC and DC sides and running the checks above. If Beve 99 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Beve 99?
Beve 99 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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