There are basically three ways this could be done:
1. it could be running off battery.
2. it could be running off mains power (assuming the RV is connected to a power drop).
3. it could be a combination of battery power and an alternative power source such as gas.
the air conditioning cycle
no..
R34 refrigerant is used for restoring Freon gas to the air conditioning pumps on motor vehicles. It is also used to restore Freon gas to the air conditioning pumps in recreational vehicles like campers.
This may be caused by the ignition switch.
No electricity
Portable air conditioning is great for work or any place where you have different preferences than other people. It would not, however, be a good replacement for a home air conditioning system.
True
yes
A day and night air conditioning system does not work at all as it is a scam and it is really the same system. There are no difference to its operating systems.
Air conditioning allowed people in hot climates to be more productive. It allowed them to work in occupations that would be dangerous from the heat. Air conditioning added the element of safety to hot occupations.
Switch, fuse, fan motor itself. If the whole head unit seems to be unresponsive (outside/inside air buttons also) it could be a faulty ignition switch.
Central air conditioning provide a uniform distribution of cool air in your home or work place. It creates a more comfortable environment. 80% of new homes built in the United States are built with central air conditioning.