The Federal Drug Administration has issued a warning to consumers about the risk of failure with automated external defibrillators (AEDs) made by Philips Healthcare.

Although Philips says the chance of failure is “extremely low,” the potential for damage is very great when we’re talking about a malfunctioning defibrillator. If you own a Philips AED, it would be in your interest to contact Philips at 1-800-263-3342. If your Heartstart defibrillator gives three “chirps,” this is a clear indication of a malfunctioning unit. But even if there are no chirps and everything seems to be working properly, you still need to contact Philips about getting a replacement.

If you work for a medical facility, athletic organization, or even a school, you likely have an AED on the premises. If you do not know what brand it is, we ask that you forward this story to those who do know. The recalled AED models were sold from 2005 to 2012. If you believe that you may have a defective device, contact Philips at 1-800-263-3342 to receive a replacement.