Chapter 6: Diagnostics and troubleshooting
24 HOBO Energy Logger Pro User’s Guide
Problems and solutions
Problem Solution
o status indicators
are blinking
The indicators are very faint under direct sunlight or bright fluorescent lighting. If no
indicators appear to be blinking, shield the logger from the light and check the indicators
again.
Check the status in HOBOware Pro:
• Make sure the batteries are not dead. Batteries should have at least 1 volt per cell.
• The memory may be full. Read out the logger and relaunch.
• The logger may not have been launched.
Individual modules
or sensors are not
found, or are
missing in
HOBOware Pro’s
Launch Logger
dialog
If a FlexSmart module or Smart Sensor is removed and then immediately reconnected, it
may not be detected, and therefore will not appear on the Launch Logger dialog. Click the
Refresh button on the Launch Logger dialog.
Check for a loose connection between the module or sensor and the logger.
Make sure you have not exceeded 100 meters (328 ft) of network cable for all Smart
Sensors.
o modules or
sensors appear in
HOBOware Pro’s
Launch Logger
dialog
Remove all modules and sensors except one, click
Refresh, and see if the module or sensor
appears on the Launch Logger dialog. Continue to remove and reconnect modules and
sensors one at a time until you identify the culprit. If you find the bad module or sensor, or if
none of the modules or sensors communicate, contact your Onset Authorized Dealer or
Onset Technical Support.
Batteries die
prematurely
Check for excessive moisture or contamination in the logger enclosure. Severe and/or
repeated condensation in the logger enclosure can lead to short circuits and battery failure. It
may be necessary to place the logger in an additional weatherproof case with desiccant
inside the enclosure to prevent condensation.
Make sure that both the logging and sampling intervals are set for at least one minute or
greater. Fast sampling and logging intervals (shorter than one minute) will rapidly deplete
the battery. For more information, refer to “Maximizing battery life” on p. 13.
Check for damaged wiring and malfunctioning modules and sensors. Damaged cables or
connectors can result in complete or partial short circuits that will rapidly drain batteries.
Datafile contains
errors
If you are missing data for a particular module or sensor, check that it was properly installed
and configured. Remove and reconnect the module or sensor, and check the status in
HOBOware Pro to verify that it can report accurate readings. If you find that it is not
communicating, it may be damaged. Contact your Onset Authorized Dealer or Onset
Technical Support.
Excitation power
stops working
The batteries have dwindled to 6.8 V while excitation was in use. The batteries are nearly
dead and must be changed.
Datafile cannot be
opened
In rare circumstances, the datafile may have become corrupted. Read out the logger again
and try opening the file again. If that does not work, contact your Onset Authorized Dealer
or Onset Technical Support.
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