📦 Recommended Universal Appliance Power Cord Replacement (paid link): https://amzn.to/4lwbCZw <br />A worn or intermittent power cord can errors—this replacement ensures stable power for uninterrupted cooking.<br /><br />As an Amazon Associate, I earn from qualifying purchases — it helps support the channel at no extra cost to you.<br /><br />⚠️ Seeing the E4 error on your Ninja Air Fryer PRO (AF140UK)? It usually means the door isn’t securely closed — here’s how to fix it fast and get cooking again.<br /><br />🔧 In this video:<br />• Align and close the door properly<br />• Clean the door sensor to improve detection<br />• Reset your appliance to clear temporary glitches<br />• Inspect wiring for loose or damaged connectors<br />• Know when to contact Ninja support<br /><br />📘 Official resources:<br />• [Ninja Support US](https://support.ninjakitchen.com/hc/en-us/articles/4402881919506-Contact-Us)<br />• [Owner’s Guide (UK)](https://support.ninjakitchen.co.uk/hc/en-gb/articles/13334608519580-AF140UK-Series-Ninja-Air-Fryer-4-7l-Pro-Owner-s-Guide)<br /><br />#ninja #ninjaairfryer #airfryer #airfryerfix #howto #fixit #troubleshooting #kitchenfix #appliancerepair #diyrepair #kitchengadgets #cookinghack #airfryerproblems<br />