I have a phoenix 24 500 inverter connected to two Optima batteries and a Victron 24v battery charger.
This systems powers 100watts of LED lights and a 20w ceiling fan located in a room, the issue I have is sometimes the ceiling fan starts to make a strange noise (like a strong buzz), and the inverter is also buzzing.
This issue happens once or twice a day and I can last few minutes to more than half a hour. Sometimes I have to turn inverter off and turn it back on and noise is gone.
Any ideas what could cause this?