8 troubleshooting – Beurer GL 40 (mmoL) User Manual
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Beurer GL40 mmol/L
8 Troubleshooting
Messages on the display for batteries and blood sugar measurement
No.
Cause
Action
LP
Flat batteries
Replace all batteries.
Ht
Temperature of the measure-
ment room, measuring device
or test strip above the allow-
able limit.
Repeat test with new test strip as soon as the
measurement room, measuring device and test
strip have reached room temperature (+20°C to
+25°C).
Lt
Temperature of the measure-
ment room, measuring device
or test strip below the allow-
able limit.
Repeat test with new test strip as soon as the
measurement room, measuring device and test
strip have reached room temperature (+20°C to
+25°C).
Err
Used or contaminated
test strip was inserted.
• Insert test strip which has not been used or
spoiled.
• Repeat blood sugar measurement.
001 System
error
• Remove the batteries and reinsert them.
Contact our customer service department if
the problem persists.
005 Memory
error
• Remove the batteries and reinsert them.
Contact our customer service department if
the problem persists.