Diagnosis
Error code E15 signifies a communication failure between the app and the appliance after a command was sent.
How to Fix It
1. On the Airfryer, press any button to clear the error from the display. 2. Check that the Airfryer is still online in the Philips NutriU app. 3. Ensure your phone has a stable internet connection. 4. Re-send the recipe from the app. Send it only once.
If That Didn't Work
The internal clock/processor may have desynchronized. Unplug the Airfryer for 30 seconds. Plug it back in, wait for it to boot fully, then retry the app command.
Heads Up
E15 does not cancel a running program. If cooking had started, it will continue. The error only pertains to the remote command function.