| Error Code | Resolution |
| Er 1 Er 7 | Your device's batteries are low. Please replace them with 4 AA batteries. |
| Er 2 | Your measurement was interrupted due to movement. Please avoid moving or talking while taking a measurement. |
| Er 4 Er 5 Er 6 | Your device cannot connect to the cellular network. Try moving to a new location, upstairs or near a window. |
For any other error code, please contact CareSimple customer support.