Latest Posts

How To Fix My DeLonghi Portable Air Conditioner Reset Button Not Working?

If you have a portable air conditioner from DeLonghi, and it isn’t turning on, you may be wondering what’s wrong. There are numerous reasons why this could happen, but one of the most common reasons is that the reset button on the unit has been pushed accidentally, and must be pressed to get it working again.

In my case, the issue was with the reset button and it needed to be replaced urgently. I spent all my summers without AC due to this confusion in which I did not know how to deal with the situation. Hopefully, you will not face the same.

In this case, that means pressing down firmly on the reset button of your DeLonghi portable air conditioner with a small pin or needle until the LED indicator light turns off and then pressing the power button to turn it back on again.

DeLonghi Portable Air Conditioner's Reset Button Not Working?


Turn off the AC Unit

Disconnect the AC unit from the power source and turn it off. If you’re using a window air conditioner, be sure to pull it out as far as possible so that the screws are not being supported by the window frame. If there is no way to remove it without taking out a pane of glass, move on to the next step for further clarification.

Locate where your ac unit was plugged in and check if there is still a live wire. If there is then please unplug it and contact an electrician. Remove all debris that could be interfering with your thermostats such as metal or wooden furniture and any objects blocking air flow near windows or vents

Plug in an Extension Cord

A common problem with portable air conditioners is that they will not turn on or off and the reset button stops working. This problem can be solved by using an extension cord.

1) Plug the AC adapter into a grounded electrical outlet to keep it powered. It may not work properly when plugged into a non-grounded outlet.

2) Wrap the cord around the AC adapter to keep it neatly bundled while you make the extension cord connections.

Disconnect the Power Source

In order to reset the DeLonghi portable air conditioner, you must unplug it from the wall outlet or power strip that is currently providing power. After you have unplugged it, wait a few seconds and plug it back in.

If this doesn’t work and your problem still persists, there may be something wrong with the appliance. In that case, you will need to call a technician for more troubleshooting steps.

Unplug the AC Unit

The reset button on your AC unit might not be working if the outlet it is plugged into has power. If the power in your outlet is faulty, first use a lamp to confirm that the problem lies with your outlet and not your portable air conditioner. Turn off any power strips or other electrical devices that are using the same circuit as your AC unit.

Then, unplug your AC from its location and plug it back in after 30 seconds or so. Once you’ve confirmed that you have access to reliable electrical power, proceed to Step 5 for troubleshooting problems with the reset button itself.

Wait 5 Minutes

If the reset button still doesn’t work, then you may need to contact a service technician. Most often the reset button is inoperable when there is some type of power interruption, such as a blackout or power surge. When this happens, wait five minutes and see if your appliance turns back on by itself.

If it does not turn back on by itself and the appliance starts to overheat, stop using it until you contact a technician. If no voltage interruptions have occurred, unplugging and plugging back in the appliance should start it up again.

Plug it back in and see if your AC is working fine

If you found the problem to be your breaker and unplugged it, plug it back in now. Plug in any other items that are on a shared circuit (things like outlets, lighting, or an appliance). Hopefully, your Air conditioner should be working fine now.

Go into the breaker box, flip the breaker switch off, and then on again. If everything else seems to be working as expected, then your air conditioner probably needs service.

You may also be interested in: How To Fix A Portable Air Conditioner Not Draining Water

Delonghi Portable air conditioner buttons not working

One of the buttons on your DeLonghi portable air conditioner is not working. A few factors could be preventing the button from working properly. The first and most common issue is that the battery for the remote has gone dead.

The easiest way to fix this is to change the battery, or if it doesn’t have a removable battery, you will need to bring it into an electronics store or somewhere where they sell replacement batteries for remotes, such as Radio Shack.

If you are not sure how to take apart your device in order to change the battery, ask someone at an electronics store or consult your owner’s manual. Another possibility is that there is a stuck button preventing any other buttons from functioning properly.

The compressor on a Delonghi portable air conditioner intermittently fails

If your compressor is shutting off or you see an error code on the screen, it could be because of several things. If the screen indicates a low refrigerant level, that would mean that the refrigerant has leaked out.

You can add more at any time as long as you replace it with type R-22. If there is no message on the screen and the compressor continues to shut off, there could be a filter clogging up the unit or loose wiring in your home.


How do you reset a DeLonghi portable air conditioner?

In the following steps, we’ll show you how to reset your portable air conditioner.

  • First, power off your unit by unplugging it from its outlet
  • Next, press and hold the on/off button for about five seconds
  • Release the button and wait for three seconds before turning the unit back on
  • Wait another three seconds before pressing and holding the on/off button again for five seconds
  • When you turn your unit back on, your filter should be clean and back to normal efficiency levels!

How do you fix a portable air conditioner that won’t turn on?

Every year, people use portable air conditioners to keep cool during the hottest days of summer. If your portable air conditioner won’t turn on or has a problem, the reset button might be your solution.

The reset button is located on the outside or back of the unit and often looks like a light switch. After you find the reset button and hold it for five seconds with no power connected to the unit, it will come back on if it was just turned off by accident.

Why would a portable air conditioner stop working?

It may be that your DeLonghi portable air conditioner is running out of water and needs to be refilled. Another cause could be that there is too much moisture in the air and it has condensed on the unit, preventing cool air from being circulated into the room.

You can attempt to dry it off with a hair dryer or change its fan setting. For issues where there is no power coming through to the unit, turn it off and unplug it for 10 seconds before plugging it back in.

Also read: Fix Air Conditioner Not Draining Water – A Complete Guide


The reset button on your portable air conditioner should be white and/or labeled reset. To initiate a reset, press the button until the unit starts up again. Some models might require you to hold the button down while pushing it in. The power cord must be plugged in and connected to an outlet for the process to work. Finally, you might be able to Fix your DeLonghi Portable Air Conditioner’s Reset Button Not Working.

It is also important that you disconnect any extensions before plugging your portable air conditioner back in. The reset button can also be used to check if your device has blown a fuse or circuit breaker when it has been short-circuited, or as a last resort if everything else fails.

Talha Hanjra

Hi! I'm Talha Hanjra. I have a natural affinity for cutting-edge technological devices, and I enjoy finding solutions to their difficulties. I'll tell you how to fix various outdated gadgets and where to buy the best products. My research and experience will be of tremendous use to you.

Leave a Reply

Your email address will not be published.