Troubleshooting and error messages
Error message displayed Possible cause Suggested action
The thermometer distance to the
patient is out of range
Take the measurement again, and
make sure the thermometer is 4 to 6
cm away from the center of the
patient's forehead, just between the
eyebrows.
The ambient temperature of the room
is outside the operating range of 60.8
°F to 104 °F (16 °C to 40 °C)
Move to a room with the proper
ambient temperature and wait 30
minutes for the thermometer to
stabilize.
The measurement is lower than 93.2 °F
(34 °C)
Take the measurement again. Follow
the steps in the "Take a measurement"
section.
The measurement is higher than 109.4
°F (43 °C)
Take the measurement again. Follow
the steps in the "Take a measurement"
section.
Flashing battery symbol on the display The battery is low on power Replace the battery with two AAA
(LR03) alkaline batteries.
Blank display The thermometer does not have power Make sure the battery has been loaded
properly.
Contact your local Welch Allyn service
center or representative if the
thermometer still does not function.
11