Air Conditioning Repair Troubleshooting
Ready for that troubleshooting list? Follow our simple guide below to get started, and remember that many of these air conditioning repair steps don’t even need any mechanical expertise.
1. Air Conditioner Won’t Turn On
There are a few reasons why your central air conditioning system isn’t running, like a switch turned to the wrong setting, a blown circuit, incorrect thermostat settings or a condensate pan that needs to be drained.
Blown Circuit Breaker
The AC won’t come on if you have a tripped breaker.
To find out if the breaker’s tripped, head to the house’s main electrical panel. It’s a gray metal box mounted to the wall, usually in a basement, garage, or closet.
- Don’t forget to make sure your hands and feet are dry before touching the panel or breakers.
- Find the one labeled “AC” and double-check that it’s in the “on” position. If not, the breaker will be in the middle or “off” position. That’s what it means to have a tripped breaker.
- To fix this, shift the breaker back to the “on” position. If it trips again, leave it alone and give us a call at 469-505-0525, because a breaker that is repeatedly tripping could mean an electrical problem.
Incorrect Thermostat Settings
If the thermostat isn’t signaling your AC to run, it won’t be able to turn on.
The first and most important step is to make sure it’s not set to “heat.”
If you’re using a digital thermostat:
- Put in new batteries if the screen is dark. If the symbols are incorrect or scrambled, the thermostat will need to be replaced.
- Make sure it’s set to the correct program. Override it by lowering the temperature and pressing “hold” if you can’t change the program. This will force the AC to start if the programming is incorrect.
- Set the thermostat to a temperature that’s cooler than the room’s temperature. If it’s the same temperature, the AC won’t start.
Once the thermostat is on the correct settings, the cool air should start flowing very quickly.
If you’re using a smart thermostat like Nest, Ecobee, Lux, Honeywell or Bosch, take a look at the manufacturer’s website. If you’re still having trouble, give us a call at 469-505-0525 and see why our service is 100% guaranteed*.
Turned Off Switch
The AC most likely has a shutoff switch near the outside unit. This switch is usually inside a metal box mounted to the outside of your home. If that unit has been recently repaired or maintained, the switch may still be set to the “off” position, and will need to be switched back.
Clogged Condensate Drain Pan
The drain pans collect the excess moisture your system removes from the air. It’s located either under or inside your furnace or air handler.
If there’s a blockage or clog, water can build pressure and trigger a safety feature. This will turn off the system.
If the pan has PVC pipe or drains, clear the excess water with a special cleaning tablet. You can find these tablets at home improvement or hardware stores.
If the pan has a pump, you’ll need to find the float switch. If the switch is set to “up” and liquid has collected in the pan, the pump might need to be replaced. Call us at 469-505-0525 and let us help you make things right.