You go to turn on your air conditioner but nothing happens. Why? Usually, it means that
your system is not receiving power or that your thermostat is not set correctly
. Make sure that your thermostat is set to “cool.” You may also need to adjust the temperature that it's set to.
What do you do if your AC doesn't kick on?
- Check your Thermostat. …
- Check Your Air Filter. …
- Look for a Blown Fuse/Tripped Circuit Breaker. …
- See if the Emergency Shut-Off Switch Is Tripped. …
- Check the Inside Unit's Power Switch. …
- Make Sure the Drain Pan & Lines Aren't Clogged. …
- Look for a RESET Button.
How do I get my AC to kick on?
Follow these steps. Make sure that your thermostat is set to “cool” and not “heat” (if it's set to heat, your AC won't turn on no matter what).
Turn the temperature setting 5 degrees below the current temperature
to see if your AC will turn on.
Why did my AC suddenly stop working?
You will want to have the unit examined to look for signs of a blown fuse, a tripped circuit breaker, a broken thermostat, or
dirty air filters
. Dirty or clogged filters commonly make AC compressors stop working. … When it's 110 degrees outside, don't set your thermostat at 65. It just isn't designed for that.
Start at your circuit breaker panel and flip the breaker that powers your AC. Also, flip the power switch your AC unit is connected to outside to the off position. Find the button.
Most air conditioning units are equipped with a reset button
.
Why won't my AC or heat turn on?
A furnace and/or AC that won't turn on usually has
a power supply issue or a tripped limit switch
. Limit or safety switches turn off the system when a malfunction occurs. … However, the issue is sometimes simply a matter of power supply or a thermostat error, and it's easier to investigate these lines of inquiry first.
How do I know if my AC fuse is blown?
If you suspect that your AC may have blown a fuse, the first thing you shall notice is that the outside unit of your AC is not doing anything. You
may hear a minor humming sound
, but that is the extent of it. The humming sound is produced because, despite no power, the furnace keeps asking the AC to run.
Why is my air conditioner running but not cooling the house?
Condenser Unit is Blocked
If your air conditioner is running, but not lowering temperatures inside, one issue could be a blocked or clogged condenser coil. When operating correctly, the condenser fan draws air into the outdoor unit through the condenser coil to pull heat energy out of your home.
The reset for a whole house air conditioner is going to be in
the outdoor unit
. You will have to look for it. It will have a small button that's probably red in color and two wires protruding from the top. The opposite end of the pressure switch will have a small copper tube connected to the systems refrigeration line.
What to check if AC is not working?
If your AC indoor fan isn't working, first check to make sure a breaker hasn't been tripped. If all is OK,
check your air filter
. If it's blocked, then you may be able to fix it yourself. If there's ice on the evaporator coil and refrigerant lines, allow the ice to melt, then check again to see if the fan is working.
Can thermostat cause AC to not work?
Some AC problems due to a malfunctioning thermostat
When a thermostat develops repair problems,
it will often lose its connection to the
air conditioner. In such cases, although you will need repair technicians to fix the thermostat, you shouldn't have damage to the AC itself that will need work.
How do you know if your AC is broken?
A big sign that your AC is broken is
when it starts expelling warm air
. … If you turn your AC on but little to no air comes out, it could also be a compressor or ductwork issue. Either of these issues could end up costing you big bucks on your electricity bill, so turn off your AC until you get a repair or replacement.
How do I reset my air conditioning unit?
Turn off your air conditioner at your thermostat. Reset the air conditioner breaker in your circuit breaker box.
Wait 30 minutes
, then turn the thermostat for your air conditioner back to “cool.” It should be at least five degrees cooler than room temperature.
How do I reset my AC thermostat?
- Turn your thermostat off by switching it to the off position.
- Find the breaker that powers your HVAC system and turn it off.
- Wait 30 seconds and turn the breaker back on.
- Turn your thermostat back on.
Why do I have to reset my AC unit?
Why Do You Need to Reset? You need to reset the air conditioner
because the circuit breaker is engaged and isn't allowing the compressor to start
. The circuit breaker will pop if there's a surge in power supply or if there's a sudden black-out or brown-out.
What causes no power to thermostat?
Power Supply
In the event your home loses power,
that could trip your circuit breaker
, resulting in a power loss to your thermostat. To troubleshoot this, head over to your circuit breaker and ensure the breaker powering your thermostat is turned on. If it's off, try resetting it.
