Low battery: If the screen lights up and flashes 3 times, the battery may be low. At this time, you can try to replace four No.7 batteries to see if it can solve the problem.
Automatic calibration: After installing the battery or moving the hula hoop for the first time, the screen may display 0 and flash, which is normal. This is the hula hoop in automatic calibration, and it should automatically return to normal after a few minutes.
Abnormal weighing: If ERR is displayed on the screen, it usually means that the weight exceeds the maximum weighing range of hula hoop (generally 300 kg). Make sure it stays within a reasonable weighing range.
If the problem still exists after trying the above methods, it is recommended to contact hula hoop manufacturers or after-sales service centers for more professional maintenance suggestions. They may provide more specific instructions, or they may need to repair the hula hoop.
Please note that when repairing or handling any electrical products, please disconnect the power supply first to avoid the danger of electric shock. At the same time, operate according to the product manual and the manufacturer's suggestions to avoid damage or safety problems caused by improper use.