Airflow TA465 - Troubleshooting

37
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended
solutions for common problems encountered with the Model TA465. If
your symptom is not listed, or if none of the solutions solves your
problem, please contact TSI.
Table 5-1: Troubleshooting the Model TA465
Symptom
Possible Causes
Corrective Action
No Display
Unit not turned on
Switch unit on.
Low or dead batteries
Replace batteries or plug
in AC adapter.
Dirty battery contacts
Clean the battery
contacts.
Velocity reading
fluctuates unstable
Fluctuating flow
Reposition probe in less
turbulent flow or use
longer time constant.
No response to
keypad
Keypad locked out
Unlock keypad by
pressing  keys
simultaneously.
Instrument Error
message appears
Memory is full
Download data if desired,
then DELETE ALL memory.
Fault in instrument
Factory service required
on instrument.
Probe Error
message appears
Fault in probe
Factory service required
on probe.
Probe is plugged in,
but the instrument
does not recognize
it
Probe was plugged in
when the instrument was
ON
Turn instrument OFF and
then turn it back ON.