10. Cleaning and Storage
Use an alcohol swab or cotton swab moistened with alcohol (70% Iso-
propyl) to clean the thermometer casing and the measuring probe. Ensure
that no liquid enters the interior of the thermometer. Never use abrasive
cleaning agents, thinners or benzene for cleaning and never immerse the
instrument in water or other cleaning liquids. Take care not to scratch
the surface of the LCD.
Remove the battery from the instrument if it is not required for extended periods of time in order to avoid
damage to the thermometer resulting from a leaking battery.
Ambient temperature too high
Ambient temperature too low
Error function display
Blank display
Dead battery indication
Displays «H» in conjunction
with the «▲» when ambient
temperature is higher than
40.0 °C or 104.0 °F.
Displays «L» in conjunction
with the «▼» when ambient
temperature is lower than
10 °C or 50.0 °F.
When system has malfunction.
Please check if the battery has
been loaded correctly. Also
check polarity (<+> and <->) of
batteries.
If the steady battery icon is the
only symbol shown on the dis-
play, the batteries should be
replaced immediately.
9. Error Messages
7
Display / Problem Display Meaning
Measured Temperature too high
Measured temperature too low
Possible cause and fault
remedy
Displays «H» when measured
temperature higher than
100 °C or 212.0 °F.
Displays «L» when measured
temperature lower than 0 °C or
32.0 °F.
