325
Overtemperature in the connection area
Fronius · Primo GEN24 Operating Instructions
What does 325 mean?
This code indicates an overtemperature condition detected in the inverter's connection area. This suggests excessive heat at the terminals or wiring, causing a short-term interruption in energy feeding before the inverter attempts to restart.
Common Causes
- Loose or corroded electrical connections generating localized heat.
- Overcurrent conditions in the connection area due to faulty wiring or undersized cables.
- Poor ventilation around the connection terminals.
Repair Steps & Checklist
Click steps to track your progress.
- 1
If this status code keeps recurring, contact your system engineer for diagnosis.
- 2
Inspect all electrical connections in the connection area for tightness and signs of overheating or damage.
- 3
Ensure adequate clearance and ventilation around the inverter's connection terminals.
- 4
Verify that cabling is correctly sized for the current draw.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Primo GEN24 Operating Instructions