Plugging into shore power.... Buzzing noise
Still kinda new here, and trying to figure stuff out. 1st time pluging into shore power at house and they're is a loud buzzing noise coming the electrical box right there at the power cord compartmen...
Forum Discussion
You can try to clean it using compressed air but if it continues and it bothers you it will need replacing. It seems that older ATS used coils with AC switching and were prone to humming as the contactors wore. Older units also had the generator as the default so whenever shore power was present without the generator running you got the hum.
Newer models use DC voltage to switch the coils and the default is shore power, so no hum when plugged in. We just replaced ours with the newer version and it's dead silent now. They are not too expensive to buy but depending on the location it might be a simple or difficult install.
Newer models use DC voltage to switch the coils and the default is shore power, so no hum when plugged in. We just replaced ours with the newer version and it's dead silent now. They are not too expensive to buy but depending on the location it might be a simple or difficult install.
