Remember that your Temperature Control Panel operates on 12-VDC from your coach batteries.
So, make sure your coach batteries are in good condition, full of water and that they are fully charged.
Your Bounder has a built-in converter that keeps the batteries charged. However, when the batteries are not taking a charge then the Converter can power a few of your 12-VDC items, but it cannot carry the load of everything operating.
This is the most common cause of this kind of problem with the temperature controller.
Also, as your air conditioners age they tend to draw more current, both in the operating mode as well as when the compressor cycles. With a 50-Amp service to your RV, your service should be adequate for operating your Air units, unless you have enough other 120-VAC equipment running that could put you near an overload condition on your campsite service.