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Page 26
10. Troubleshooting
10.1 General Error Messages
Error
Message
Possible Causes
Remedy
Factory
Cal. Fail
See
Handbook
The EEPROM chip which
contains the factory
calibration information has
failed.
The unit must be returned to
TPS for service.
•
Conductivity, TDS and
Salinity readings will be
accurate only if used in
same range in which it was
calibrated.
•
Temperature readings may
be up to 10% incorrect.
Memory
Failed
Calib.
Lost
Memory
Reset !
You MUST
Re-Cal.
User calibration settings
have been lost or corrupted.
Re-calibrate the instrument.
Both a Zero and a Standard
calibration will be required
for Conductivity (section 3) a
2 point calibration for pH
(section 4 and a 1 point
calibration for temperature
(section 5).
Meter displays the
word
OFF
, and
switches off.
Battery is below 6.00 volts.
Replace the battery.
Meter will not turn
on.
Battery is exhausted.
Replace the battery.
Flashing
symbol.
Battery is below 7.50 volts.
Replace the battery soon.
Note that the unit will switch
itself off when the battery
falls below 6.00 volts.