Troubleshooting My Philips Avent sterilizer stopped working If your Philips Avent Sterilizer is not working anymore, there can be several reasons. Find out if you can solve this yourself. The Philips Avent sterilizer is not cooled down The sterilizer must cool down for about 10 minutes after a sterilizing process before you can switch it on again. Wait en retry again. The power outlet may be at fault Check to see if other electrical products will work on the power outlet. If so, connect the sterilizer to a working power outlet. Did this not solve the issue? Please contact us. The sterilizer is damaged If the Philips Avent sterilizer is damaged in any way, please contact us.