Why did whole-house ac stop working, still blowing but not cold?
The air conditioning worked fine then suddenly yesterday it stopped being cold, but fan still works.
@jlozier since this sounds more like a power issue, I would suggest that you check the power to your AC unit first. It should be 240V (depending where in the world you are:-) If you have power to the AC then you want to check the run capacitor. It is in charge of the fan motor and the compressor. Check it for bulging, leaking and/or severe corrosion. If so replace it. The next part on my checklist is the contactor. That is basically a 24V relay that closes the circuit when your thermostat calls for cooling. There are a few different ones for your AC model, which makes it somewhat important that you post some pictures with your question. Use this guide for that since it will allow us to see what you see. Please remember that the voltage and amperage on your AC packs a heavy punch. Do not touch any live wires etc.
BTW you and I will not beable to purchase any refrigerant since that requires a HVAC license and some nifty gauges to refill the unit.
Mine does that, occasionally, after a power outage and needs to be reset. There are instructions to do that but I hate electricity so my neighbor had me turn it off at the thermostat, then he unplugged it (at the outside power coupling), we talked a few minutes, then he plugged it back in and I turned it back on and all was well.