How To Manually Turn On AC Unit-DIY Guide

In order to manually turn on an AC unit, you will need to locate the power switch on the outside of the air conditioning unit and turn it on by flipping it upwards.

The switch will be placed on the upper right side of the unit near the unit’s exhaust vent. This method of turning on an AC unit is used when there are temporary power outages that last between several minutes and several hours.

When I got my new AC, I did not know how to turn the unit manually on so I searched through the internet, and here is what I found.

How To Manually Turn On AC Unit

Locate The Power Box

The power box is usually located outside the home, near the condensing unit. It will have a breaker switch that controls the power to the unit. If you are unable to identify it, check the electrical panel. The power box will have a label that says air conditioner or AC.

There should be a breaker labeled AC as well. Flip this breaker on and wait for the lights in the home to come back on before proceeding to the next step.

Locate Power Cord

You’ll need to locate the power cord coming from the compressor of your air conditioning unit, then plugging into an outlet nearby.

Check for any caution labels and follow them closely before proceeding with this step. After locating the power cord, proceed to the next step.

Press The Power Button

The first thing you need to do is find the power button. This is usually located on the front of the unit near the bottom. Once you find it, press it firmly for two to three seconds. You should see a light come on or hear the unit start-up.

If nothing happens, make sure the unit is plugged in and try again. Make sure the plug is inserted fully into an outlet that works. Sometimes it helps to twist the plug around so that it’s facing more toward one side than another.

Check if there are any nearby circuit breakers that might be tripped (you can flip them back). And finally, check if there’s anything blocking access to the socket where your extension cord is plugged in.

Lower The Temperature

You should see a knob or lever on the front of your unit. This is how you’ll lower the temperature on your AC unit. Slowly turn the knob to the left until you reach your desired temperature.

You may have to experiment a bit to find the perfect setting for your home, but once you do, you’ll be able to keep your cool all summer long!


After you have set everything up and made sure that all the connections are secure, it is time to wait. The unit will take some time to start up, so be patient. You may hear some strange noises as the system gets going, but this is normal.

Once the compressor kicks on, you should feel cool air coming out of the vents. If you see that everything is working ok, congrats! You have successfully turned on your AC unit manually.

Raise The Temperature Again

If your home is still too warm for comfort, it’s time to raise the temperature on your AC unit again. This time, you’ll need to go into the thermostat and manually set it to the desired temperature.

Once you’ve done that, turn on the power switch (if it’s not already on) and wait for the cool air to start flowing. If everything is working properly, you should feel a difference within a few minutes.


People have some queries related to the AC and its functioning. Some of the queries are as below.

How do I turn on my AC without a remote?

On a ductless air conditioner, it is possible to activate the remote control without an RF transmitter, so you can power the unit on with just a pen or pencil, opening the control panel, and pressing the Emergency Run button, located on the right side of the enclosure.

Can an AC be controlled with my phone?

Cielo Breez devices work with the free Cielo Home app to connect your mini-split, window, or portable AC to your smartphone. The app is available from the Android Play Store and the iOS App Store.

Also read: Toshiba Air Conditioner Operation Light Blinking Best Solutions


In order to manually turn on your AC unit, you will need to locate the breaker box and flip the switch. Once the power is on, you can then go to the thermostat and set it to the desired temperature.

If everything is working properly, the unit should kick on and begin cooling your home. However, if you’re still having trouble, it’s best to call a professional for help.

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