REL_INV_CLOSE / REL_GRID_CLOSE — Grid relay failed to close

What does REL_INV_CLOSE / REL_GRID_CLOSE mean?

The inverter checks the internal relays that connect it to the grid before starting to feed power. If these relays fail to close properly, the inverter will not connect to the grid for safety reasons and will display this message.

• Grid relays not functioning properly.

Click steps to track your progress.

1. 1

   If this fault message is displayed repeatedly, it means the inverter operation is permanently disabled.

2. 2

   If the inverter is equipped with a communication interface, your installer can attempt to rectify the fault using a communication product.

3. 3

   Should this be unsuccessful, contact the SMA Serviceline for further assistance.