美国采购需求：电子、照明

I recently purchased a WiFi pool timer and have encountered issues with it after only six weeks of use. Unfortunately, the device has stopped functioning entirely, overheating in the process and failing to connect to WiFi—even when properly connected to power. Given that I've used it with care and it's evident that the failure stems from a potential manufacturing or electrical defect, I believe this is not due to normal wear and tear. As the product is still under warranty, I'm requesting a refund for this defective item. Please let me know the necessary steps to initiate the return process. I appreciate your attention to this matter and look forward to your prompt response.