I've got a Tripp Lite APS 750 on my Harman Mag.
It may have been doing it for awhile but I was in the basement when the inverter transferred the other day.
I'm experiencing a "buzzing" noise from the blower motors, on stand by power.
I did check the outlet voltage and it is around 97 v . That check was with my old amprobe. ( non-RMS meter) Someone said to check first with an RMS meter ?
Does anyone else notice this on stand-by power ?
I know low voltage is no good but I'm not sure what is causing it. ( if the reading is right) My battery is charged, 13.5 volts.
Any help/comments are appreciated.
Thanks, Mossy Beard