Horiba Scientific LAQUAact ES-71, Instruction Manual

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Troubleshooting
ES-71 53
●
The temperature display blinks or is fixed at 25°C
The measured value blinks when it is out of the measurement range.
●
Nothing appears when the power is turned ON
●
Swelling of operation key sheet
Cause How to solve problem
Sample temperature is out of the
measurement range.
Set to a temperature within the measurement range.
Temperature connector is not
connected correctly.
Connect the temperature connector correctly.
The temperature setting is set to
MTC.
Change the setting to ATC.
Operation is incorrect during
temperature calibration.
Recalibrate using a solution of known temperature, or
return to the factory setting (“ Resetting to factory default
settings ” (page 43)).
Instrument defect Consult your dealer.
Cause How to solve problem
Power is not supplied. Insert batteries or connect the AC adapter (option).
Battery polarity (+,

) is
reversed.
Insert the batteries with the polarity (+,

) correctly
oriented.
Battery life is low. Replace the batteries or connect the AC adapter (option).
Instrument defect Consult your dealer.
Cause How to solve problem
Using the instrument at high
elevation or other location where
the air pressure is different from
sea level. To eliminate the pressure difference between the inside
and outside of the instrument, briefly open and then close
the AC adapter cover. After opening, correctly close the
cover to maintain dust and water proofing.
Instrument defect Consult your dealer.