User's Manual

21
Troubleshooting
Fault
Symptom
Possible Cause
Solution
Failing to start
up
The battery level is
extremely low.
Use new batteries of
the same type or
specifications.
The batteries are
installed according to
wrong positive and
negative electrodes.
Check whether the
batteries are installed
in the battery holder
according to the
electrode signs.
The instrument is
damaged.
If the instrument is
within the warranty
period, contact the
after-service
department of the
manufacturer for free
repairing.
Only the
battery
symbol is
displayed
after the
instrument is
powered on.
The battery level is low.
Use new batteries of
the same type or
specifications.
Only "Er1" is
displayed
The environment
temperature is higher
Make measurement at
an environment