AC and refrigerator not working hooked up the city electric and circuit breakers

[Chieftain owner]

I I would like to know where I start to fix the problem of my refrigerator and air conditioner not working I am hooked up to City Electric the circuit breaker is fine what do I do

[Oz]

Just for clarity, they do work when running the engine or off 12v coach batteries (refrigerator),  and generator (both fridge and air).

I assume your interior lights, coach water pump and water heater work when plugged into shore power?

When you say, "city electric" what are you plugging into?  A house outlet? Campground electric?

[TerryH]

The majority of our units are wired for 120v, 30 amps routed through 2 - 15amp circuits.
When you say "the breaker is fine" do you mean the one on your converter or the one on your "city electric " source, or both.
Are you trying to power up 2 A/C units at the same time?