Vaisala HMP Series, User Manual

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Warnings
Calibration certificate
checksum mismatch Certificate stored in the probe
has an invalid checksum Contact Vaisala technical
support
Calibration has expired Shown by calibration reminder
functionality Calibrate the probe and update
the calibration date information
Supply voltage too low for
probe heating Probe heating enabled but
supply voltage is too low to use
it This warning is expected when
probe heating is enabled and
the probe is connected to
Insight software using an USB
cable. The operating voltage
provided by the cable is not
sufficient for probe heating.
If probe is not connected using
a Vaisala USB cable, check the
supply voltage.
Software restart Device has automatically
restarted itself Check that supply voltage is
stable and operating
environment is within
specification
Unexpected device restart
Status messages
Calibration is about to expire Shown by calibration reminder
functionality Calibrate the probe and update
the calibration date information
Purge in progress Chemical purge of the humidity
sensor ongoing Wait for chemical purge to
complete
The readings stay frozen until
the sensor cools down Probe is waiting for its sensors
to cool down Wait for measurement readings
to become available
8.3 Restoring factory default settings
You can restore the probe back to its factory default settings using Insight software. Doing this
will also clear any user adjustment and restore the latest adjustment performed by Vaisala.
1. Connect the probe to Insight. See Connecting to Insight software (page 41) .
2. Select > Factory default settings > Restore settings .
3. Wait for the probe to be re-detected.
Chapter 8 – Troubleshooting
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