The controller has overheated. Please switch the electric blanket OFF using the controller and remove the power plug from the power socket.
Allow the controller to cool down for 20-30 minutes, keeping it away from any heat sources. Once the controller has cooled down, plug the power plug back into the power socket and switch the controller ON.
Please do not cover the controller with the electric blanket or expose to heat sources.
Should you need any further assistance, please don't hesitate to contact our friendly Customer Care Team!