436 Function incompatibility - Incompatible PC boards in the inverter.

What does 436 mean?

One or more PC boards in the inverter are not compatible with each other, possibly after a component replacement. The inverter will automatically attempt to connect again and resume feeding energy.

• Incompatible internal hardware components.
• Incorrect PC board replacement.
• Outdated firmware after a hardware change.

Click steps to track your progress.

1. 1

   Perform an AC reset by switching the automatic circuit breaker for the inverter off and then on again.

2. 2

   Update the inverter firmware to ensure all components have the latest compatible software.

3. 3

   If this status code persists, contact a Fronius-trained service technician.