MPPSolar PIP 5048GK Error 15 Beep?

I just hooked up my panels to the PIP5048GK. It's nearly dark outside but I wanted to test my inverter. After a while I had Error 15. This is insufficent PV. Is there a possibility to disable the beeping, but only on this. Disabling beeping for primary source didn't work. I had to disable the whole beeping. I'm in SBU mode. Any ideas on that?

BTW my whole system is up. Just need to add the loads to the inverter. So proud . I will do a thread in the DIY Battery Project Build soon. Very intersted what you all say

Same controller, seems to me disabling the beeper disables it completely.

Beep is the first thing I turn off but not sure on the GK as they are all different. I'll grab a screen shot of my PIP4048HS inverter

Ok so I'll do the same. Thought if there was a possibility to just disable that beeping I could get the other alarms.

Who cares wouldn't hear it anyway as it is in the basement... Thank you Keith and HBPowerwall