Step 1: Look at the screen and note the error number (e.g., F56, F08).
Step 2: Refer to your manual, but first try a “Hard Reboot”: Switch off the AC (Eskom) breaker, switch off the DC (Battery) isolator, wait 60 seconds, and switch them back on (Battery first, then Eskom). This clears 80% of minor software glitches.

Check your “Output” or “UPS” setting. If the inverter is in “Bypass” mode or the output breaker has tripped, it won’t provide power during an outage. Ensure the “Auto-switch” or “UPS” mode is enabled in your settings menu.

This is likely a BMS Lockout. If the battery is drained completely, the internal Battery Management System (BMS) shuts it down to prevent permanent damage.

Check your Inverter-to-Battery communication cable. If the c’able is loose, the inverter can’t see the battery’s state of charge and will trigger a warning. Ensure the “CAN” or “RS485” cable is clicked in firmly on both ends.

The Fix: You may need a “Jump Start” by allowing the grid or solar panels to provide a small charge current. If it doesn’t wake up, contact our tech team for a “wake-up” procedure guide.

Three common culprits in SA:
Dust/Soot: After a few dry weeks, a thin layer of dust can drop efficiency by 20%.
Shading: Even a small branch or a new chimney shadow on one corner of a panel can significantly drop the performance of the entire string.
Heat: Solar panels actually produce less power when they are extremely hot. This is normal behavior during a 35°C+ South African summer afternoon.