If the temperature on the Mijia Refrigerator Cross Door 451L cannot be set, please refer to the following methods to troubleshoot:
1. Please check whether the Child lock function is turned on. Turning on the Child lock function will cause the buttons to be inoperable.
2. If the Child lock function is not turned on, please turn off the power to the refrigerator for 3-5 minutes and then turn it on again.
3. Moisture or dirt on the refrigerator display screen can affect touch sensitivity. Please gently wipe the display screen with a dry, soft cloth and ensure your fingers are dry when operating it.
4. Try using the Xiaomi Home App to adjust the temperature and see if it can be adjusted.
5. If the issue persists, please contact the after-sales service center for inspection.