The table below outlines what to do when an error code appears on the display of your QardioTemp:
| Message | What it means | What to do |
 |
Temperature measurement outside the displayed temperature range, skin/surface scan temperature ranging from 71.6°F~111.2°F (22°C to 44°C), is shown on the display with red LED.
Hi-temperature Lo-temperature |
N/A |
 |
Appears when environmental temperature is below or above system operation range. | Put the thermometer under operating temperature range of 50°F to 104°F (10°C to 40°C) |
 |
Problem with the thermometer. | Review the instructions and re-start the measurement procedure. If the problem persists, contact Qardio Support. |
 |
Battery is low and “ ”appears on LCD. |
Please replace new batteries as soon as possible. |
 |
Appears when the batteries can’t provide enough power for a test. | Please replace new batteries immediately |
111.3°F (44.1°C)
71.5°F (21.9°C)