Microlife IR 1DE1 - Manual (Page 12)

9. Error messages
Display / Problem Display
Meaning
Measured
Temperature
too high
Measured
temperature
too low
Ambient
temperature
too high
Ambient
temperature
too low
Error function
display
Blank display
Dead battery
indication
Possible cause and
fault remedy
Displays «H» when
measured temperature
higher than 100.0 °C or
212.0 °F.
Displays «L» when
measured temperature
lower than 0 °C or
32.0 °F.
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 5.0 °C or 41.0 °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 display,
the batteries should be
replaced immediately.
10