STATE 303
STATE 303
Overtemperature DC module
Behaviors
Short interruption of grid power feed operation due to overtempature of a inverter component.
The inverter returns to the startup phase.
Status Code Class 3
Class 3 status codes (state codes that start with a three, i.e., 3xx), may occur while feeding energy into the grid, but generally do not cause the process to be interrupted permanently.
The inverter temporarily disconnects automatically from the grid, the grid is then monitored as specified and the inverter attempts to resume feeding energy into the grid.
STATE 303 applies to:
Primo
Galvo
Symo
IG Plus
IG
Solutions for this Error
Remedies
- Check inverter location, clearance of the ventilation ports. Clean air inlets and ensure exhaust ports have proper space.
- If this issue persists, the next steps include inspecting internal inverter components and their cabling by a trained Fronius Service Provider to further diagnose this specific issue. Defective components or the device itself may need to be replaced.
Get Help with this Error:
The best point of contact is your original installer
If the orginal installer is no longer available, contact a local Fronius Service Provider
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