Heating & Air Conditioning

Make sure the thermstat setting is turned to cool/AC, then adjust the thermostat below the ambient house/room temp and if it doesn't turn on/cool it is broken, in need of adjustment, the wiring is faulty, ... .

This is why repair people do troubleshooting.

When it comes to figuring out if your air conditioner is giving you trouble, it's important to keep an eye out for some telltale signs. If you notice that it's not cooling your space as efficiently as it used to, that's a red flag.