Only the battery symbol is
displayed after the
thermometer has powered
on.
"Er1" is displayed.
If the warranty has not yet
expired, contact Customer
Service.
Take the measurement in an
environment with an
ambient temperature
between 10°C (50.0°F) and
40°C (104°F).
Replace with new batteries.
The thermometer is faulty.
The battery level is low.
The ambient temperature is lower
than 10°C (50.0°F) or higher than
40°C (104°F).
9. Troubleshooting
Symptom
The thermometer fails
to power on.
The battery level is extremely low.
Replace with new batteries.
Ensure that the batteries are
correctly installed according
to the polarity symbols in the
battery compartment.
Polarities of the batteries are
reversed.
Possible Cause
Solution
18
19
