Weight is inaccurate July 14, 2023 00:08 Updated Tap the footplate to turn on the device. Once 0.0 appears on the LCD screen after 2-3 seconds, try again. The weight can be inaccurate if the device is used on a carpet or mattress. Place the device on a flat, hard surface then try again. Related articles What is the difference between the H20N and H20B? Weight is not measured and the screen displays a scrolling rectangle on the H20N How do I change the measurement unit type on the scale? Can I get my results to my computer? How do I test on the H20N scale? Comments 0 comments Article is closed for comments.