
External factors may inuence ear temperatures, including:
Factor Aected Not aected
Used probe cover
Ambient temperature
Wet / dirty / damaged lens
Hearing aid
Lying on pillow
Moderate cerumen (ear wax)
Otitis media (ear infections)
Tympanostomy tubes
Open battery door
Open battery door by sliding spring latch to the right
using your nger or a pointed object such as apen.
While holding the latch in the open postion, grasp the
battery door and removeit.
Change 2 AA alkaline batteries when begins to
ash on the display.
Remove the 2 AA alkaline batteries and replace with
2 new AA alkaline batteries, making sure the poles
are in the right direction.
Snap battery door back into place and ensure the latch
returns to original latch position.
© 2019 All rights reserved. This product is manufactured under license to the ‘Braun' trademark.
'Braun' is a registered trademark of Braun GmbH, Kronberg, Germany.
DIR 80025048 Rev C
Revision date: 2019-10
Errors and notifications What affects accuracy
Replacing the batteries
No probe cover is attached
(animates ON).
Attach new, clean probe cover.
Used probe cover is attached
(animates OFF).
Discard probe cover that is on and attach
new, clean probe cover if taking another
temperature measurement.
Battery is low, but thermometer will still
operate correctly.
Insert new batteries.
Battery is too low to allow
temperature measurement.
Insert new batteries.
(POS = position error)
The infrared monitor cannot nd
a temperature equilibrium and
allows no measurement.
Change the probe cover to reset.
Restrict patient movement and
ensure that the positioning of the
probe is correct and remains stable while
taking new temperature.
Ambient temperature is not within
the allowed operating range
(50 – 104 °F or 10 – 40 °C)
or changing too rapidly.
Wait 20 sec. until thermometer turns
o automatically, then turn on again.
Ensure thermometer and patient are in an
environment for 30 minutes where the
temperature is between 50 ºF and 104 ºF
or 10 ºC and 40 ºC.
Temperature taken is not within typical
human temperature range.
HI will be displayed when temperature
is higher than 108 °F (42.2 °C).
Change probe cover to reset. Then, make
sure thermometer is properly inserted and
take a new temperature.
LO will be displayed when temperature
is lower than 68 °F (20 °C).
System error
(Allicons display or
display is blank)
Iferror persists,
Iferror still persists,
Iferror still persists,
Wait20seconds until the
thermometer turns o automatically, then
turn on again.
… reset the thermometer by removing the
batteries and putting them backin.
… batteries aredead. Insert
new batteries.
… contact local Welch Allyn Service Center
or representative.
Note: If lens is dirty or inserted into ear canal without probe cover refer to maintenance and service
section in directions for use. Only clean as specied by manufacturer.
Manufacturedby:
Welch Allyn, Inc.
4341State StreetRoad
Skaneateles Falls, NY13153
USA
or
®
Rechargeable battery pack
Insert rechargeable battery pack into battery
compartment with battery label facing outward.
Situation SolutionError Message
Made in Mexico
ThermoScan is a registered trademark owned by Helen of Troy Limited.
Welch Allyn Limited
Navan business Park
Dublin road,
Navan, County Meath
Republic of Ireland
C15 AW22