Cooling Fans inconsistent

Hi all, new here.
I have a Conext SW 4048 120/240 Split Phase (865-4048) and it seems to be working well, but the internal cooling fans are constantly turning on and off and moving at different RPMs, sometimes during the day, but especially at night. Seems like something is wrong. It just seems like either the fans should be on, or not. Instead they cycle on and off randomly at different speeds...
Comments
If the air coming out the side is fairly warm, when fan is on but no significant load on inverter, I would be concerned.
You might give Conext a call just to hear what they say about it. I would like to hear their response.