My AC section won't come on..? Thermostat read low battery so I changed battery and also changed fuse...

Thermostat read low battery so I changed battery and also changed fuse freshly in case. I did the breaker entry and nothing. My thermostat reads 89 contained by the house..I live alone and I don't want to die alone of heat stroke! PLEEEAAASSSEE HELP..Before I call the big guys..
Perhaps you have to reprogram your t-stat because the batteries be out of it. No guarantees but...might be worth a try.


first progress outside and make sure the disconnect is in adjectives the way then at the thermostat construct sure you have it on cool and if that doesn't work you will need to telephone an HVAC tech because it can be low on freon Open up your air con and check the any LED lights on as this will indicate whether the unit itself is not working not.
Answers:    You enjoy done all that you can do. Call your local heating/cooling company. Most companies offer 24 hour emergency service.