Why did my heating and airconditioning only work on high and now dont blow any air?

You will first have to check to see if the refrigerant has leaked out from the system. You may do one simple check yourself which is to turn on the airconditioning and look in the engine bay for the high and low pressure air-con pipes. There will be one pipe freezing cold if the system has refrigerant in it and the pump is working correctly. If not, then have the system checked by a professional.

dont worry just try to wash the engine radiator and the ac radiator fins with high pressure water. probably insects got stuck in the holes reducing air flow thus heating the car and tripping the air conditioner.
if air mixes with gas the the ac will not work more than few minutes as the moisture trapped inside will block the capillary tube. no way

your low on gas ,a twin unit normally has 1.2 kgs of gas and i suspect your down to around 500 grms of gas

Well for the airconditioner to work you will need freon 134a.You will also have to inspect for leaks at the air conditioning hoses. If your low on freon the system wont turn on if you full of freon then a low pressure switch or high pressure switch or even the airconditioning pump maybe the solution

No hot air is due to low coolant, or even poor coolant flow. The engine heats up the coolant, and it passed through your heater core, and the heater blower motor pushes air through the heater core to warm up the air. If your "fan"is working, but the air is cold, make sure your coolant level is good.

Not suppose to,airconditioning is only cool air........Hope this helps.

Check the cooling fans. They likely aren't working. These vehicles are common for have a bad cooling fan relay.

Does it still sound like its on high? If so you could have your vents blocked/restricted or your blower is not blowing on high speed. Usually a blower resistor if not blowing at max or not blowing at all speeds

I have the same problem, when running the air conditioning the front vents will blow hot air. I have not removed the dashboard yet, but I think that the air damper is stuck in the open position. It seemed like a heater core valve problem, but I am pretty sure it is a damper under the dashboard. Now however, I am finally getting some cool air out of the airconditioning vents, but when winter comes, I am afraid I will struggle getting heat again.

Either you are out of coolent or the compressor is not working.

First check the fuses, then lift the hood and have a friend turn the air on. The compressor should cycle, if not take it to a mechanic. If it does cycle you are low on freon, take it to a mechanic for a system charge. Make sure they check for leaks first.