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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. 1

    If this status code keeps recurring, contact your system engineer for diagnosis.

  2. 2

    Inspect all electrical connections in the connection area for tightness and signs of overheating or damage.

  3. 3

    Ensure adequate clearance and ventilation around the inverter's connection terminals.

  4. 4

    Verify that cabling is correctly sized for the current draw.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

102AC voltage too high103AC voltage too low105AC frequency too high
Source: Fronius Primo GEN24 Operating Instructions
Open Manual (Page 105)Search more codes in this manual