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732

732 Overcurrent on the USB stick - Excessive current drawn by USB device.

Fronius · Primo Solar Inverter

What does 732 mean?

This indicates that the USB stick or device connected to the inverter's USB port is drawing too much current. The inverter detects an overcurrent condition to protect itself.

Common Causes

  • A faulty USB stick.
  • An incompatible USB device.
  • A short circuit in the USB port.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Remove the USB stick from the inverter's USB port immediately.

  2. 2

    Check the USB stick for any physical damage or defects.

  3. 3

    Insert a different, known-good USB stick. If the code persists even without a USB stick, contact a Fronius-trained service technician.

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

Related Faults

240240 Arc detected - Brief detection of an electrical arc.241241 Arc detected - Inverter disconnected due to a confirmed arc.242242 Arc detected - Inverter resuming operation after arc reset.
Source: Fronius Primo Solar Inverter
Open Manual (Page 48)Search more codes in this manual