First Enphase installation – need help troubleshooting

Hi all

Here’s my setup: (10) VSun 400w panels (VSUN400-108BMH) (10) Enphase IQ8+ micro inverters (IQ8PLUS-72-2-US) (1) Enphase Q Cable (Q-12-10-240) (1) Enphase combiner/gateway (X2-IQ-AM1-240-4)

Originally I was planning on having them in a single row but ended up having to group them differently on the roof.
Now I have: 1 row of 4 portrait 1 row of 4 portrait 1 single landscape 1 single landscape

I used MC4 connectors as couplings between the groups of panels noted above.

In Enlighten Toolkit I have the system set up as a single row of 10 portrait in the array.

I have the PV line going into the Combiner into a 40A breaker in slots 1/3.

From the lugs on the Combiner I am going to the solar side of a Siemens solar ready meter main. Currently using a 30A breaker I had on hand.

When I power on the solar side of the meter main and the 2 breakers in the Combiner (PV and the gateway), it takes a minute to boot up.

In Enphase Toolkit: I see all 10 IQ8 micro inverters. All 10 have the 4 green dots lit up. All 10 report: —- AC Voltage Out of Range: Phase 1 —- AC Frequency out of range

Across the lugs at the Combiner I have 246V and 123V on the each leg to ground.

Utility is Southern California Edison (SCE).

Left the system up over 3 days to see if those errors would self regulate but still the same this morning.

Any advice/suggestions on what I can do to troubleshoot this system?

Thanks!