If the high pressure lines from the condenser to the furnace or the evaporator coil in the top of the furnace are iced up then shut the system down.
Outside central air unit not turning on.
Try resetting the air conditioner some air conditioners have reset switches near the outside unit.
If you re lucky enough to have a unit with a reset switch located near the outside unit all you need to do is simply press the switch.
Split ac unit a split unit is an air conditioner that has two parts.
If your outside ac unit not turning on and you have confirmed that the power source is good then the problem may be the electronic control board.
Packaged ac unit a packaged unit is just one big unit that has both of these parts and is typically located on the roof.
If your air conditioner doesn t have a reset button try this.
One inside in a closet attic or utility room inside of your house and an outside unit.
And there are many things that can prevent the outdoor unit from starting some of which can be quite serious.
If you are not getting cold air when the thermostat is on and set to cool you may need to reset the compressor.
Unfortunately they can be expensive to repair when something goes wrong.
Central air conditioning systems have an outside unit with a compressor that runs and provides the cool air that runs through the vent system.
Typically this means one of two things.
Either turn off the breaker in the panel or pull the disconnect switch outside at the condenser.
Turn off your ac at the thermostat.
Is your ac unit not turning on.
This portion is used almost all air conditioner units to help control various parts.
This video walks you through a lot of the common fixes while explaining how it all wor.
Turn it back on again.
The unit freezes up.
An indication that the control board is not working is not running the fan or compressor circuit.
After some investigating you determine that your outside ac unit isn t running but the inside is.
If your central air conditioner will not turn on try to troubleshoot the problem yourself before calling a serviceman out to your home.
You can try pushing this button to see if it helps.
Your system is probably low on freon and needs to be recharged.
If you do not have a reset switch you can turn off your air conditioner at the thermostat and wait for 5 minutes before turning it back on.
Outdoor unit won t come on outdoor unit not running.
Your outside ac hums but the fan doesn t spin or the entire outside ac unit isn t working at all.
Or maybe it s running but not cooling.