Axpert Warning 15 warning: Low PV energy
Keep an eye on it
Urgency: low
What it means
The panels are producing very little power. Weather or dusty panels are the usual reasons.
Likely causes
- Cloudy weather
- Dusty panels
- Shading
What you can safely check
- Compare with the weather – heavy cloud or rain lowers solar output.
- Rinse dusty panels with a garden hose while standing on the ground.
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.