The Bluetooth icon keeps blinking
The Bluetooth connection has failed.
Make sure Bluetooth is activated and the iHealth MyVitals app is running.
If the problem persists, reboot your smartphone.
L0
Make sure the batteries are installed correctly.
If the problem persists, try with a new set of batteries.
Er0
Remove the batteries. Wait 1 minute and insert a new set of batteries.
Er1
The user's current weight is outside the measuring range (5 - 180Kg).
Er2
The weight measured by the scale is not stable. Place your feet correctly in the middle of the scale and stay still during the measurement.
Er4
Bluetooth connection failed.
Turn of then turn on Bluetooth and restart the connection. If the problem persists, restart your smartphone.
Er9
Memory access error.
Remove the batteries. Wait 1 minute and insert the set of batteries again.
Er10
Error updating firmware.
*credit to Sylvain of iHealth Labs EU
https://helpcenter.ihealthlabs.eu/hc/en-gb/articles/360000007829-iHealth-Lite-HS4S-List-of-error-codes