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Battery symbol at LCD or wrong device time
Device time is maintained by internal RTC (real-time clock) circuit with coin-
cell backup battery. Battery lifetime is designed for a whole device lifespan
and is not exchangeable by the end-user.
In case of battery sign at LCD display and red exclamation mark at the web
pages are shown, it means that current time may not be correct. Correct time
at device setup should be set and saved. After that can be device powered
off for 5 minutes to validate that coin-cell backup battery works properly. If
battery symbol is shown after power-on again, please contact technical
support.
Unable to power on device
When device is not showing any signs of function when power supply is
connected, it generally means issue with power adapter or USB cable. At
first step please make sure that mains socket is functional and is used
compatible power adapter. If so, exchange power adapter and USB cable to
another one. Specification of USB cable and power adapter you find at
chapter
. If issue will not be resolved, please open device lid
and visually inspect device board for any damage. Please make sure that
jumper header inside device at left top corner connects middle and bottom
pin. For other help please contact technical support.
Device is restarting continuously
During device restart are all segments of LCD display light up. When device
is continuously restarting it commonly means that power adapter or USB
cable is damaged. Please exchange cable and power adapter. Specification
of USB cable and power adapter you find at chapter
. If issue
will not be resolved by another USB cable and power adapter, please contact
technical support.
Measurement accuracy issue
Measurement accuracy issue of temperature and relative humidity are
commonly caused by wrong position of probes or wrong measurement
methodology. Please follow recommendations described at chapter
Operation in application areas
. In case of error is shown at measurement
channel, please see recommendations at
Another group of issues are the random spikes at the measurement values.
Common reason for such issues is a source of the electromagnetic
interferences next to cable or device itself. Do not install device to the closer
proximity than is 1 m from access point. Other reasons can be damaged
insulation of cables. Please make sure that shielding of probes is properly
connected as well.