- Er 0
- Er 1
- Er 2
- Er 3
- Er 4
- Er 5
- Er 6
- Er 7
- Er 8
- Er A
- Low battery symbol is displayed on the screen
- Nothing happens when you press a button or insert the batteries
Er 0
The pressure in the air circuit is unstable when the measurement is started.
Try again without moving.
Er 1
The blood pressure monitor did not detect systolic pressure.
Try again without moving.
Er 2
The blood pressure monitor did not detect diastolic pressure.
Try again without moving.
Er 3
The pneumatic system is blocked or the cuff is too tight.
Attach the cuff correctly and try again.
Er 4
Air leak in the pneumatic system or the cuff is not tight.
Attach the cuff correctly and try again.
Er 5
The pressure in the cuff is higher than 300 mmHg.
Wait 5 minutes and try again.
Er 6
The pressure in the cuff is higher than 15 mmHg for more than 3 minutes.
Wait 5 minutes and try again.
Er 7
EEPROM (memory) access error.
Wait 5 minutes and try again.
Er 8
Error checking device settings.
Wait 5 minutes and try again.
Er A
Pressure sensor setting error.
Wait 5 minutes and try again.
Low battery symbol 
is displayed on the screen
The batteries are low. Please replace them with a set of new batteries.
Nothing happens when you press a button or insert the batteries
Take the batteries out, wait 5 minutes and reinstall the batteries.
If the problem persists, try with a new set of batteries.
*credit to Sylvain of iHealth Labs EU