If the buttons on the Xiaomi Instant Hot Water Dispenser are unresponsive, please follow these steps to troubleshoot the issue:
1. First, ensure that the power cord is securely connected and that the outlet is functioning properly;
2. Next, check if the child lock is activated. The water dispenser's buttons will not function unless the child lock is unlocked;
3. Finally, press each button individually to see if they produce a sound or response. If none of the buttons produce a sound or the device remains unresponsive, it is advisable to contact the local after-sales service center for further inspection and assistance.