What should I do if my Dyson Airwrap™ multi-styler starts flashing a red LED?
If the red LED on your device is blinking, this indicates an issue that needs repair. First, clean the filter cage thoroughly. If it still persists after cleaning, contact Dyson Helpline for further assistance (Page 3).
From the official Dyson Supersonic 308C Hair Dryer manual, page 3
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