10-9 
10.2.3 Troubleshooting 
 
Message  Cause  Solution 
Therm. battery low 
The ear thermometer 
battery is low. 
Replace the battery. 
Therm. is not ready 
A measurement is taken 
before the ear thermometer 
stabilizes. 
Take a measurement until all the 
icons stop flashing. 
Ambient temp 
changes fast 
The environment 
temperature changes fast. 
Use the thermometer in an 
environment of stable temperature. 
Ambient temp out of 
range 
The environmental 
temperature is out the range 
of 10°C to 40°C (50°F to 
104°F). 
Keep the thermometer from 
operating for at least 30 minutes at a 
room temperature of 10°C to 40°C 
(50°F to 104°F). 
Therm. parameter 
error 
The ear thermometer is not 
functioning properly. 
Unload the thermometer battery, 
wait for one minute, and then 
repower the thermometer. If the 
message reappears, contact us for 
service. 
Therm. software error 
Therm. hardware 
error1 
Therm. hardware 
error2 
 
 
10.2.4 Cleaning and Disinfecting the Ear Thermometer 
 
Refer to the THP79JU Infrared Ear Thermometer instructions for use for cleaning and 
disinfection information. 
 
 
10.3 Monitoring Temp with Genius
TM
 2 Tympanic Tethered 
Thermometer 
 
The Genius
TM
 2 tympanic tethered thermometer is a fast, accurate, and convenient clinical 
instrument for measuring patient temperatures. The Genius
TM
 2 thermometer is an ear 
canal thermometer with measurement site equivalence modes including oral, core, and 
rectal equivalent temperatures. 
 
The thermometer is powered by the monitor.   
 
 
10.3.1 Safety Information