Problem or message Likely causes and solutions
The probe is not responding to any serial
commands.
Disconnect the USB cable from the probe and
retry. If your probe is in the analog output mode,
press ENTER a few times immediately after
connecting the USB cable.
Try the ?? command in case the probe is in
POLL mode, open the line using OPEN command
if necessary.
Check your serial line settings and cable
connections.
The following error is active: Voltage error Operating voltage out of range. Correct voltage
and reset probe.
Any check sum error is active. For example:
• Program flash check sum error
• Parameter flash check sum error
Internal error. Perform the following steps:
1. Return the probe to factory settings using
the FRESTORE command. Check again.
2. If the error is still active, contact Vaisala.
The following error is active: Frequency
measurement outside the permissible value
range
Check for condensation on the probe and
sensor. Allow the probe and sensor to dry.
If the error is still active, there may be a problem
with the electronics. Contact Vaisala.
More information
‣
Technical support (page 95)
8.3
Error messages in Insight software
Table 15 Error messages in Insight software
Error Likely cause Suggested solution
Temperature
measurement error.
[44]
Temperature sensor is
short circuited,
damaged, or missing.
Check that the legs of the temperature sensor
are not short circuited. Contact Vaisala if the
temperature sensor is damaged.
Humidity
measurement error.
[45]
Humidity sensor is wet. Wait for the humidity sensor to dry, or remove
the filter and gently dry the sensors and the
filter with clean instrument air.
Humidity sensor
failure. [46]
Humidity sensor is
damaged or missing.
Replace the humidity sensor or contact Vaisala.
Ambient temperature
out of range. [48]
Ambient temperature
is too high.
Lower the temperature at the installation site.
Chapter 8 – Troubleshooting
67
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