Troubleshooting - Amprobe TMD90A Mode D'emploi

Troubleshooting

Problem
Thermometer does not turn
on.
Dashes appear in the T1 and
T2 data screens.
Dashes appear in T1 and/or T2
data screens with
thermocouples inserted.
Temperature drifts from a
known value in a controlled
environment
Solution
• Check battery voltage and
replace discharged battery.
• Verify that battery clips grip
the battery post tightly.
• Insert missing
thermocouple.
• Measure resistance of
thermocouples to ensure
they are not broken
internally.
• Clean the thermocouple
and restart.
• Verify that thermocouple
type matches the displayed
icon.
• Clean and dry the
thermocouple blades and
allow to air dry.
• Confirm temperature with a
known good thermocouple.
Replace the defective
thermocouple if required.
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