TROUBLESHOOTING
8-10
8.2 Troubleshooting Table
Table 8-2
Problem Possible Reasons & Solutions
Cannot turn on
power after
charging the
battery
Reasons: Discharged battery.
Defective battery.
Microcomputer hang-up.
Solutions: Charge or replace battery.
Disconnect, then connect battery
to reset computer.
No LCD back
light
Reasons: Trigger level too low, the
current mode is not user mode,
and the mode does not support
automatic turn on back light.
Solutions: Adjust trigger level.
Verify the back light can be
turned on in user mode.
Call authorized service center.
Lost password Solutions: Use default configuration to
reset password from computer.
Warning: If the default
configuration is loaded, all the
parameters need to be reset,
including pump, lamp and
LCD contrast thresholds,
serial number; and re-
calibration is required.
Reading
abnormally
High
Reasons: Dirty sensor module.
Dirty water trap filter.
Excessive moisture and water
condensation.
Solutions: Clean sensor module and lamp
housing.
Replace water trap filter.
Blow dry the sensor module.
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