Why is my AED Beeping?

An AED may beep for several reasons:
  • Disconnected Electrode Pads: If your AED is beeping and requires electrode pads to be pre-connected, make sure your electrode pads are connected to the AED.
  • Low or Expired Battery: Check the charge of your battery to see if its life is depleted, and confirm the battery isn’t expired. If it’s expired, order a replacement battery.
  • Expired electrode pads: Check the expiration date of your electrode pads. Electrode pads can dry out with age or if they become unsealed, so it’s important to make sure they’re in good working order. If they’re expired or not usable, replace the electrodes.
  • Internal circuitry issue: If everything else checks out, the beeping may be caused by an internal circuitry issue. AED Superstore recommends you contact the AED manufacturer for warranty service.
If you other questions or need replacement electrode pads or batteries, call AED Superstore at 800-544-0048 for further assistance and our trained Customer Care Agents will be happy to assist you.

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21 Responses to “Why is my AED Beeping?”

July 25, 2019 at 1:26 pm, Jeong Lee said:

Hello, we just bought this for the company about 2 months ago and I dont know why it just beeping every 5 seconds.
This is very uncomfortable.
Please help me out to resolve this problem.


July 25, 2019 at 1:31 pm, AED Superstore said:

Hello Jeong,

If it is beeping continuously there is an issue the AED is wanting you to know about. Give our customer support team a call at 800-544-0048 and they should be able to help you troubleshoot the issue so you can resolve it.


December 09, 2019 at 3:50 pm, Patricia said:

Hi how do you disconnect the electrode pads ?


December 10, 2019 at 1:40 pm, AED Superstore said:

Hello Patricia,

This depends on the AED you have, but most are connected with a cable. New pads will come with a new cable. The exception are AEDs which use a cartridge system such as the Philips OnSite or the HeartSine PAD AEDs. In that case, the entire cartridge will need to be removed in order to disconnect them from the unit.


January 23, 2020 at 4:07 pm, mishka said:

why is my resue ready light on red


January 27, 2020 at 8:37 am, AED Superstore said:

Hello! It’s possible your AED needs a new battery or other attention. We recommend you call our customer service center at 1-800-544-0048. They will help you troubleshoot your AED and get it ready to rescue again.


March 09, 2020 at 7:25 pm, Paul Nomee said:

What is service code 350 mean ?


April 03, 2020 at 7:07 am, AED Superstore said:

Hi Paul,

Since you didn’t mention which AED you own, we would recommend calling our customer service center and they will be able to help you troubleshoot any issues you may be having with your AED. They are well versed in every make and model and should be able to help get your AED back in service. Please call 1-800-544-0048 between 7 am and 7 pm, Monday – Friday


June 03, 2020 at 4:41 am, Nelson Rivera said:

If you replaced the battery you must open the door to the AED and let it reset.


September 25, 2020 at 3:08 pm, Adam Hallet said:

Hi, I just replaced the battery on my AED and it is still beeping. Tried calling your customer service line, no answer and voicemail is full. Very frustrating.


September 30, 2020 at 9:50 am, AED Superstore said:

Hello Adam,
We’re sorry to hear you are having difficulty reaching our customer service line. Our hours for that line is M-F, 7am to 7pm Central time. I have forwarded your question to our customer care leader and she should be reaching out to you shortly. Thank you for your patience.

In such an event in the future, your operator’s manual for the AED should contain a troubleshooting section. IF you are unable to locate the manual, our website has links to all manuals on the product’s sales page.


February 09, 2021 at 10:15 am, Judy Haley said:

oue Defibtech Lifeline Fully Automatic sometimes beeps in wall case why???


April 14, 2021 at 9:37 am, AED Superstore said:

Judy – if you press the power button on your AED, it should tell you what needs attention.


March 12, 2021 at 3:04 pm, Raluca said:

We just changed the battery in our defibrillator and the message says “service required”. What do we do?


April 14, 2021 at 9:38 am, AED Superstore said:

Hello! I would either contact the manufacturer or you can call our customer service team at 800-544-0048 and they can walk you through diagnosing what may be required on your AED.


August 18, 2021 at 4:12 pm, Bonnie said:

Can you tell me where this AED is made? Is it in the USA?


September 23, 2021 at 7:28 am, AED Superstore said:

Hi Bonnie – please call our customer service department at 1-800-544-0048 to help you determine the make and model of your AED.


August 19, 2022 at 6:53 pm, Byra Burke said:

How do I remove the old pads before installing new ones I just opened


November 29, 2022 at 12:36 pm, AED Superstore said:

It depends on what make/model AED you have. Please call our customer service reps at 800-544-0048 for help with your question.


February 19, 2024 at 8:37 am, Jesse said:

Why my AED is beeping every 30 min. We just changed the battery. The pads are disconnected due to AED customer service recommendation.


March 01, 2024 at 1:41 pm, gabrielle said:

Hi Jesse! If you have a Defibtech AED, it may be that you need to replace the 2nd battery. Check out this article to learn how to fix it: https://www.aed.com/blog/why-does-defibtech-lifeline-aed-have-2-batteries/. If you don’t have a Defibtech device and your device is still beeping, it is best to check the manufacturer’s owner manual, which you can find under the reference library on our product pages of your chosen device. Have more questions? Please don’t hesitate to contact a team member directly at [email protected].


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