G013-H: Error AC short: AC Voltage too low

The measured voltage on the AC Grid connection is lower than 75Volt (for 5 sec).

The PowerRouter detects that the connected AC Grid voltage has dropped rapidly.
This could be caused by a turning on a very heavy (possible skewed) load or a short circuit.

1. To solve, verify the connected voltage and loads.
2. Check the fuses, is everything in order?