Error Code
Cause
Recommended Action
Err 202
Probe communication failure.
Check that the probe is connected
properly.
Err 203
Probe error. Can be caused by probe
incompatibility, damage, or a wet
humidity sensor.
Inspect the probe and replace it if
necessary. If the error has been caused
by a wet humidity sensor, wait for it to
dry out.
Err 204
Real-time clock temperature
compensation problem.
1. If error 202 is also active, replace the
clock battery. See
.
2. Turn the data logger off and on again.
3. If the error persists, contact Vaisala.
6.3 Verifying Operation of RFL100
1. Open the battery cover of the data logger.
2. Move the power switch to the
On
position.
3. Look at the display and verify that:
• Battery indicator shows full batteries
.
• Display shows measurement readings instead of dashes or error codes.
If measurement readings are not shown after a few seconds, check that the probe is
properly connected. It is possible to disconnect the probe by pulling on the probe with
the battery cover open. In that case the display will show error code
ERR 202
.
4. Move the power switch to the
Off
position.
5. Close the battery cover of the data logger.
Push the latch down until you hear a click.
If
the cover does not close easily, push the probe (or the probe cable) in and try again.
6.4 Downloading Data Using Service Port
• Computer with a free USB port and an operating system that supports the
Media Transfer Protocol (MTP). For example, Windows
â
7 and newer.
• USB connection cable (USB 2.0 Type A - Micro-B, Vaisala cable 244961). You
also can use a generic cable that has all pins connected (not just power).
1. Open the plug that covers the service port.
2. Connect the USB cable between your computer and the service port of the RFL100 Data
Logger. When the computer detects the RFL100, it is available for file transfer.
3. Navigate to the
\Data\Log
folder on the RFL100.
RFL100 User Guide
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