Error 1 (Binary 0001) — Hardware fault

What does 1 mean?

The Fronius Solar Inverter has detected an internal hardware problem. This is indicated by LEDs 1, 2, 4, 8, and the State LED all lighting up steady red, with LED 1 specifically illuminated for the binary code.

• Internal hardware malfunction
• Component failure

Click steps to track your progress.

1. 1

   Observe the inverter for a few minutes to see if the error clears automatically.

2. 2

   Perform a full AC and DC power cycle of the inverter: Disconnect both AC and DC power, wait 5 minutes, then reconnect.

3. 3

   If the error persists, contact a Fronius-trained service engineer for diagnosis and repair.