Ok, so I am still fighting with this problem. I hooked up 50amp at the house and I have both ACs powered. Only one AC while on GENSET.
AUX batteries (4-six volt) do not register anything on the cabinet readout. I cleaned all the terminals on the 6volts, still nothing on cabinet meter. If I touch volt meter to + and - of each battery I get about 6.5 VDC.
MAIN batteries register normal range on meter in cabinet.
Most 110 outlets do not work on GENSET, but it looks like they all are working on 50amp.
Water heater works on shore power and LP.
Fridge does not work at all. Says no AC, No LP. I checked the power supply in the exterior fridge access panel and it is supplying 110. I ran an extension cord out to it also and when I plug it in I can hear the fridge making its normal faint buzzing sound but it does not get cold and the fridge says no AC, no LP.
I opened up the ATS and took a picture and read the label on the back panel and it talks about a fault light that can come on during GENSET use, but it is not on during shore power and I cannot start the generator because fuel is too low. DOH! Not sure how to test input/output of ATS.
I'm listing all these things in case they indicate a problem that can maybe be pinpointed but I'm sure the fridge issue is it's own separate issue.