it is the blower motor resistor. it works on high because on high it bypasses the switch
take to dealership. there was a recall and they will fix it for free.
A reverse cycle air conditioner work like normal air conditioners only in reverse, transferring heat into a house instead of outside of one. It is not an air conditioner at all, but a heater.
The most common cause for a air-conditioner to only work for short distances is low Freon levels. Recharge the air conditioner.
Blower resistor must not be functioning properly. It should be replaced
If you mean the blower only goes in the high mode check the blower resistor located in the plenum under the wiper module.
Vacuum leak
Recharging should be on low-pressure side only
Unplug it!
you use freon to cool your car and make the air conditioner work
Because the cool air from the air conditioner is denser than the warm air in the room and sinks. Placed high up the cool air will have time to get further from the air conditioner before it settles to the floor, allowing it to cool more of the room. Placed on the floor the cool air will mostly pool around the air conditioner and very little of the room will be cooled. Some air conditioner are actually placed relatively low in a room, but they have fans and baffles that blow the cold air upwards to the ceiling resulting in the same effect as placing the air conditioner high (maybe even better as the fan blows the cool air not only up to the ceiling but across it, possibly covering a larger volume of the room than cool air falling passively from an air conditioner placed high but without fans).
Absolutely not.
An RV air conditioner works much like an air conditioner in any vehicle. It has a compressor and a condenser that operate in concert to cool the air. In an RV, the air conditioner runs off of a generator when the engine is off.