Most new Tanita scales come with a 1-year to 3-year warranty. Keep your receipt and contact Tanita’s customer service department; they frequently replace units that show persistent communication errors right out of the box.
Here is a comprehensive guide to understanding what Error 7 means and how to resolve it. What Does "Error 7" Actually Mean? tanita scale error 7 new
If the scale was dropped during shipping, the internal load cells or the wiring connecting the electrodes to the motherboard may have been jarred loose. Most new Tanita scales come with a 1-year to 3-year warranty
If you have tried a hard surface, dampened your feet, replaced the batteries with fresh ones, and performed a reset, but the persists, the unit likely has a manufacturing defect in the BIA circuit. What Does "Error 7" Actually Mean
Troubleshooting Tanita Scale Error 7: Causes and Fixes for Your Smart Scale