8.
Error Messages
8
Display /
Problem
Display Meaning
Possible cause and
fault remedy
Measured
temperature too
high
Displays «
H
» when
measured temperature
higher than 42.2 °C
(108.0 °F).
Measured
temperature too low
Displays «
L
» when
measured temperature
lower than 34.0 °C
(93.2 °F).
Ambient
temperature too
high
Displays «
H
» in
conjunction with the
«
▲
» when ambient
temperature is higher
than 40.0 °C or 104.0 °F.
Ambient
temperature too low
Display «
L
» in
conjunction with the
«
▼
» when ambient
temperature is lower
than 16.0 °C or 60.8 °F.
Error function
display
When system has
malfunction.
Blank display
Please check if the
battery has been loaded
correctly. Also check
polarity (<+> and <->) of
batteries.
Dead battery
indication
If the steady battery
icon is the only symbol
shown on the display,
the battery should be
replaced immediately.