A/C units Issue Prior to Trip

[LoneStar1]

Hello all- preparing for my first big trip- Ordered my 2017 Flying Cloud 25 FB Twin with 2 a/c units. I was going to install the 'Soft start' (didn't install) and noticed something that makes no sense to me. If I 'turn off' zone 2 and start zone 1 in cool mode zone 2 starts shortly after zone 1 compressor starts ??? I have 30 amp service at my location and when zone 2 kicks in it doesn't trip the breaker (which it should)- Any thoughts would be greatly appreciated -heading out from Virginia to Montana Thursday. I was hoping to get Jackson Center to diagnose -forget that, first opening was August. Any recommended RV dealers/shops between VA & MT would also be appreciated.
Thanks in advance
Lonestar1

[Foiled Again]

Odd. I thought all units with 2 a/c were set up with 50 amp service. Do you mean that you are using a 30 amp pedestal?

Is the second unit on cool or just fan? If The 2nd compressor doesn't kick in it wouldn't be a huge draw. Set zone 2 to OFF until you figure it out.

[tjdonahoe]

2 ac’s on a 30 amp?...I don’t think so

[LoneStar1]

My unit is 50 amp-I couldn't run 50 amp service from this location so I use a dog bone to go from 30 amp to 50 amp at the Airstream. What strikes me as odd is if the zone 2 is off and I start zone 1 all is fine. If zone 1 is off and I start zone 2 both units start , apparently the zone 2 compressor isn't kicking in because it doesn't trip the 30 amp breaker-

[LoneStar1]

Thinking I'd overload the 30 amp service I would always run one unit at a time-zone 2 didn't get cold-blew barely cool air-I use a 30 amp dog bone at the service to a 50 amp going to the Airstream-you're absolutely right - 2 units are 50 amp-

[lsbrodsky]

You have Zone 2 OFF and it starts? Perhaps it is not starting, only the fan is running, since clearly a start would trip the breaker. Sorry, I am not familiar with 2 zones but read your manual carefully and see if there is some manual mode that runs the fan even if OFF is selected. I know this is true for heating, Auto for the fan must be selected or the heat pump fan will run with the furnace.
Larry

[A W Warn]

Is the fan speed is set to Auto mode on zone 2, not low/med/high. If it is not on Auto doesn't the fan run continuously at whatever speed is selected?

[LoneStar1]

Thanks for your input-the manual suggested to turn everything 'off' reset code for both zones from the thermostat -which I did -same thing. One service tech over the phone said the unit's probably no good and needs to be replaced-'RIGHT'-said it can't be recharged or tested for freon level-WRONG again- this is what drives me crazy- incompetence !

[LoneStar1]

You're absolutely right-it must be set to Auto-which it always is/was- no change

[AstroBruce]

One or more DIP switches might be set wrong. If you are handy, you might investigate yourself. If not, back to the dealer.

Bruce