CHAPTER
22
TROUBLESHOOTING
Problem Possible Reasons & Solutions
Cannot turn on power
after charging the battery
Reasons
Discharged battery.
Defective battery.
Solutions Charge or replace battery.
Lost password Solutions
Call Technical Support toll-free at +1 888-749-
8878
Reading abnormally high
Reasons
Dirty filter.
Dirty sensor module.
Excessive moisture and water condensation.
Incorrect calibration.
Solutions
Replace filter.
Blow-dry the sensor module.
Calibrate the unit.
Reading abnormally low
Reasons
Dirty filter.
Dirty sensor module.
Weak or dirty lamp.
Incorrect calibration.
Solutions
Replace filter.
Remove Calibration Adapter.
Calibrate the unit.
Check for air leakage.
Buzzer inoperative
Reasons Bad buzzer.
Solutions
Check that buzzer is not turned off.
Call authorized service center.
Inlet flow too low
Reasons
Pump diaphragm damaged or has debris.
Flow path leaks.
Solutions
Check flow path for leaks; sensor module O-ring,
tube connectors, Teflon tube compression fitting.
Call Technical Support toll-free at +1 888-749-
8878
Handheld PID Monitors 124 User Manual
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