In my case I have three a/cs and they need to be delayed so that the load on the generator or shore power does not hit all at once (I think lol). FYI - I was told by the sales agent that turning the fan speed to low or high from auto will shorten/eliminate the delay time, but Mr. Simonis has stated otherwise. Mr. Simonis stated the delay cannot be circumvented.
I realize it's impossible to turn on all the a/cs (either two or three of them) at one time. But if they are all set to turn on and the generator or shore power is engaged, then they all would come to life concurrently... and that would create a problem of too much demand on the power supply (again, I think).
I noticed a few weeks ago that I cannot operate all the power demanding devices on my coach at one time. I had all three a/cs on, the hydronic heater on, the insta-hot on, etc., and the demand on one leg exceeded 50 amps. The demand was not much over 50 amps, only a few amps over, but it was enough to shutdown the generator with a one flash code. Upon looking up the flash code it said low coolant. I put in about 1/4th to 1/2 gallon to top it off, reduced the power demand by turning off the hydronic heater and unplugging the insta-hot, and the generator adequately supplied all three a/cs for the remaining two days.