Axpert Warning 16 warning: High AC input during start-up
Keep an eye on it
Urgency: medium
What it means
The AC input voltage was too high while the inverter was starting. If it keeps happening, an installer should check the supply and settings.
Likely causes
- High grid or generator voltage
What you can safely check
- Check whether load-shedding or a municipal outage is affecting your area.
- If it keeps coming back, stop and call a qualified installer.
When to call a pro
If it doesn't clear on its own, happens often, or comes with burning smells, heat or noise, call a qualified installer.
Solar systems carry dangerous voltages. Only do the safe checks listed. If unsure, call a pro.
Source: Voltronic Power 1.5KW/3KW/5KW Solar Inverter/Charger User Manual v1.8 (Axpert VM III) (paraphrased)
Axpert-type inverters are sold under many names; codes can differ slightly by model.