List of error messages that may appear on the scale.
Low batteries
The batteries are low. Replace them as soon as possible with new batteries.
Batteries are running out
The batteries are running out. Replace them with new ones.
Er0
Connection error with weight measurement module
Er1
Weight not in supported range.
Er2
Unstable measurement.
Er3
Flash access error.
Er4
Firmware update error.
Er5
Connection error with app.
*credit to Sylvain of iHealth Labs EU