If your AC unit won't turn on, the first thing you should check is if
there was a blown fuse or a tripped breaker
. There's a good chance that the problem is a tripped breaker if the circuit was overloaded. … However, it is also possible that a power surge caused your air conditioner to blow a fuse or trip a breaker.
How do you fix an air conditioner that won't turn 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 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.
How do I restore the power to my AC unit?
- Power down your AC. Start at your circuit breaker panel and flip the breaker that powers your AC. …
- Find the button. Most air conditioning units are equipped with a reset button. …
- Hold down the reset button for 3 to 5 seconds and then release.
- Restore power to your AC.
Why is my thermostat not getting power?
A quick fix to restore your thermostat's power is a
tripped circuit breaker
or blown fuse, depending what you have in your home. … If you check your electrical box and a circuit breaker is tripped, just flip it back. If you have fuses, replace the fuse. Once this is done, check your thermostat.
Why would 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.
Why AC suddenly stopped working?
When your air conditioner suddenly stops working,
it can be cause for alarm
or it can be something as simple as a blown fuse or tripped circuit breaker. … It is important to note that many common problems with air conditioners can be caused by inadequate maintenance.
Can a blown fuse cause AC not to work?
First of all, your electrical system might be having problems. … While this prevents serious trouble such as electrical fires, it also means that
a single blown fuse can cause the entire air conditioner to stop working
. Some of the most common causes of AC failure are rooted in electronics.
How do I know if my AC relay is bad?
- Inconsistent cooling. The AC compressor is powered by the relay. …
- AC compressor is not turning on. One of the most obvious signs that the AC relay may have a problem is that the compressor is not coming on at all. …
- No cold air.
Can a blown fuse cause Home AC not to work?
Since blown fuses are usually a simple air conditioner repair job many do-it-yourselfers choose to try to replace blown fuses on their own. In
most cases, it does not cause the air conditioner to not work
but sometimes we get the repair call saying that the air conditioner keeps blowing a fuse.
Should I turn my AC off if it's not cooling?
If your ac is still not cooling there is one more thing you need to do. This is very important….
TURN IT OFF and call your HVAC service provider to assist you
. We always tell our customers to turn off an ac that is not cooling properly.
What does it mean if your air conditioner is running but not cooling?
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.
Why is my AC outside unit not turning on?
AC not turning on could be
the result of a blown fuse located at something called a safety shut-off box
. This should be found close to your AC unit. Check to see if you have a blown fuse, and be sure to replace it if that's the case. Even if the fuse doesn't appear to be damaged, go ahead and replace it anyway.
Why is my Honeywell thermostat not getting power?
One of the most common issues with digital thermostats is that there is no display. … Another common issue for not having a display on your Honeywell thermostat is
because the circuit breaker may have been tripped
. HVAC systems typically have their own circuit breaker, so check the box to make sure the switch is on.
How do I know if my thermostat is getting power?
You might not even have to remove the thermostat cover to find out if the unit has power. One simple way to check is
to turn up the thermostat as far as it will go and wait a minute to see if the furnace turns on
. If the thermostat controls an air conditioning system, turn it down as far as it will go.
