MEGA 6/8/10/12 kW single-phase hybrid inverter — inverter fault
Beve 55 error code
Excessive DC voltage component in the AC output; the manual's troubleshooting table also describes this as output voltage unbalanced.
Likely causes
- Output stage fault injecting a DC offset
- Abnormal or unbalanced connected load
- Output voltage regulation fault
Checks to run, in order
- 1Measure the AC output with a true-RMS meter and check for a DC offset
- 2Reduce the connected load and observe the output voltage (manual)
- 3Restart the unit and re-measure at no load
Fixes
- Reduce the connected load
- Restart the unit
- If the error happens again, return the unit to the repair centre (manual)
When to escalate
If a DC offset is measured at no load, stop using the output and send the unit to the distributor.
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 55 mean?
Excessive DC voltage component in the AC output; the manual's troubleshooting table also describes this as output voltage unbalanced.
How do I fix Beve 55?
Reduce the connected load Restart the unit If the error happens again, return the unit to the repair centre (manual)
When should I escalate Beve 55?
If a DC offset is measured at no load, stop using the output and send the unit to the distributor.
Can I reset Beve 55 myself?
Only after isolating the AC and DC sides and running the checks above. If Beve 55 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Beve 55?
Beve 55 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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