I have a 2022 5.0 with progressive ems and transfer switch attached to back of convertor.
I find that it take what seems a long time after trailer is plugged in before ac is available at outlets.
I always blamed it on the EMS but i don't think that is the case.
Once i have plugged in shore power ems displays E 0 (system Normal) almost right away but i don't hear transfer switch click over till awhile after.
I decided to time it today and it takes 2 minutes 17 seconds before it clicks over to provide ac power, is this normal?