A simple IQOS restart will help in most cases when the red LED is flashing or the IQOS is not charging properly, in the article you will find the IQOS 3 reset manual, for the older 2.4 IQOS 3 visit:
How to reset IQOS 2.4
How to reset IQOS 3, DUO
This way of resetting works with IQOS 3, DUO and IQOS Multi.
- Press and hold the button on the charger, with Multi it's the heating button
- After 8 seconds, all IQOS indicator lights go out.
- The reset is complete after all the lights are on again.
If the reset did not solve your problems, only the complaint remains (How to file a complaint), or you can try to call the Customer Care Center where they give you more information.